Update to kernel-4.19.1 and rework patches
This commit is contained in:
Frédéric Pierret (fepitre)
parent
0ea1c7b71f
commit
502e8891de
@ -1,4 +1,4 @@
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From 649d991ca7737dd227f2a1ca4f30247daf6a7b4b Mon Sep 17 00:00:00 2001
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From ca7615cf7944d9b233b7cfad8f0465b4dfc87fba Mon Sep 17 00:00:00 2001
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From: Roland McGrath <roland@redhat.com>
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Date: Mon, 6 Oct 2008 23:03:03 -0700
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Subject: [PATCH] kbuild: AFTER_LINK
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@ -12,19 +12,15 @@ Upstream-status: ??
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Signed-off-by: Roland McGrath <roland@redhat.com>
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---
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arch/arm64/kernel/vdso/Makefile | 3 ++-
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arch/powerpc/kernel/vdso32/Makefile | 3 ++-
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arch/powerpc/kernel/vdso64/Makefile | 3 ++-
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arch/s390/kernel/vdso32/Makefile | 3 ++-
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arch/s390/kernel/vdso64/Makefile | 3 ++-
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arch/x86/entry/vdso/Makefile | 5 +++--
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scripts/link-vmlinux.sh | 4 ++++
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7 files changed, 17 insertions(+), 7 deletions(-)
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3 files changed, 9 insertions(+), 3 deletions(-)
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diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile
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index 62c84f7..f44236a 100644
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index b215c712d897..e18cd2a3ea53 100644
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--- a/arch/arm64/kernel/vdso/Makefile
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+++ b/arch/arm64/kernel/vdso/Makefile
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@@ -54,7 +54,8 @@ $(obj-vdso): %.o: %.S FORCE
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@@ -55,7 +55,8 @@ $(obj-vdso): %.o: %.S FORCE
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# Actual build commands
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quiet_cmd_vdsold = VDSOL $@
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@ -35,26 +31,26 @@ index 62c84f7..f44236a 100644
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cmd_vdsoas = $(CC) $(a_flags) -c -o $@ $<
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diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile
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index d540966..eeb47b6 100644
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index 141d415a8c80..771cc7e399dc 100644
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--- a/arch/x86/entry/vdso/Makefile
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+++ b/arch/x86/entry/vdso/Makefile
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@@ -167,8 +167,9 @@ $(obj)/vdso32.so.dbg: FORCE \
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quiet_cmd_vdso = VDSO $@
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cmd_vdso = $(CC) -nostdlib -o $@ \
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cmd_vdso = $(LD) -nostdlib -o $@ \
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$(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \
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- -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \
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- -T $(filter %.lds,$^) $(filter %.o,$^) && \
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- sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
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+ -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) \
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+ -T $(filter %.lds,$^) $(filter %.o,$^) \
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+ $(if $(AFTER_LINK),; $(AFTER_LINK)) && \
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+ sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
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VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=both) \
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$(call cc-ldoption, -Wl$(comma)--build-id) -Wl,-Bsymbolic $(LTO_CFLAGS)
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VDSO_LDFLAGS = -shared $(call ld-option, --hash-style=both) \
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$(call ld-option, --build-id) -Bsymbolic
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diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
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index f742c65..526eee4 100755
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index c8cf45362bd6..ee9c4d8e1ddf 100755
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--- a/scripts/link-vmlinux.sh
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+++ b/scripts/link-vmlinux.sh
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@@ -111,6 +111,10 @@ vmlinux_link()
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@@ -112,6 +112,10 @@ vmlinux_link()
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-lutil -lrt -lpthread
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rm -f linux
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fi
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@ -66,5 +62,5 @@ index f742c65..526eee4 100755
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--
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2.7.4
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2.17.1
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@ -1,3 +1,9 @@
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From 702adf2c9c1536d5cb10b4be1340ba52654a05b5 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
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<marmarek@invisiblethingslab.com>
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Date: Thu, 6 Sep 2018 15:09:44 +0200
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Subject: [PATCH] xen-netfront-detach-crash
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When it get to free_page(queue->grant_tx_page[i]), the use counter on this page
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is already 0, which cause a crash. Not sure if this is the proper fix
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(according to git log this may introduce some memory leak), but at least it
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@ -5,12 +11,15 @@ prevent the crash.
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Details in this thread:
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http://xen.markmail.org/thread/pw5edbtqienjx4q5
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---
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drivers/net/xen-netfront.c | 7 ++++---
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1 file changed, 4 insertions(+), 3 deletions(-)
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diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
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index f821a97..a5efbb0 100644
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index f17f602e6171..61298526aee3 100644
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--- a/drivers/net/xen-netfront.c
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+++ b/drivers/net/xen-netfront.c
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@@ -1065,9 +1069,10 @@ static void xennet_release_tx_bufs(struct netfront_queue *queue)
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@@ -1140,9 +1140,10 @@ static void xennet_release_tx_bufs(struct netfront_queue *queue)
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skb = queue->tx_skbs[i].skb;
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get_page(queue->grant_tx_page[i]);
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@ -24,3 +33,6 @@ index f821a97..a5efbb0 100644
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queue->grant_tx_page[i] = NULL;
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queue->grant_tx_ref[i] = GRANT_INVALID_REF;
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add_id_to_freelist(&queue->tx_skb_freelist, queue->tx_skbs, i);
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--
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2.17.1
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@ -1,4 +1,4 @@
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From 26df8496fdb73e9ae2bdf9d1684484196260a8f3 Mon Sep 17 00:00:00 2001
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From 2d71f4d315dfcaaa9e4c1e3693e391f9d2b0a8b4 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
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<marmarek@invisiblethingslab.com>
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Date: Tue, 5 Jan 2016 02:44:04 +0100
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@ -6,8 +6,6 @@ Subject: [PATCH] mce: hide EBUSY initialization error on Xen
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Organization: Invisible Things Lab
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Cc: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
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In case of Xen, the device is already registered by xen mcelog (in
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xen_late_init_mcelog), so fail here is expected. Note that
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@ -41,12 +39,12 @@ Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
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1 file changed, 9 insertions(+)
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diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
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index c5b0d56..69b0b4b 100644
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index 953b3ce92dcc..e0bb9b52d8d1 100644
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--- a/arch/x86/kernel/cpu/mcheck/mce.c
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+++ b/arch/x86/kernel/cpu/mcheck/mce.c
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@@ -53,6 +53,10 @@
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@@ -52,6 +52,10 @@
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#include <asm/msr.h>
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#include <asm/reboot.h>
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#include <asm/set_memory.h>
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+#ifdef CONFIG_XEN_MCE_LOG
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+#include <xen/xen.h>
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@ -55,7 +53,7 @@ index c5b0d56..69b0b4b 100644
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#include "mce-internal.h"
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static DEFINE_MUTEX(mce_log_mutex);
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@@ -2355,6 +2359,11 @@ static __init int mcheck_init_device(void)
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@@ -2395,6 +2399,11 @@ static __init int mcheck_init_device(void)
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free_cpumask_var(mce_device_initialized);
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err_out:
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@ -68,5 +66,5 @@ index c5b0d56..69b0b4b 100644
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return err;
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--
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2.1.0
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2.17.1
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27
0004-Log-error-code-of-EVTCHNOP_bind_pirq-failure.patch
Normal file
27
0004-Log-error-code-of-EVTCHNOP_bind_pirq-failure.patch
Normal file
@ -0,0 +1,27 @@
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From 84160fa4557bf07017e35180d53abe4ea6ef7b14 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
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<marmarek@invisiblethingslab.com>
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Date: Sat, 30 Jan 2016 01:53:26 +0100
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Subject: [PATCH] Log error code of EVTCHNOP_bind_pirq failure
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Ease debugging of PCI passthrough problems.
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---
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drivers/xen/events/events_base.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
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index e6c1934734b7..0458fcefa4b9 100644
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--- a/drivers/xen/events/events_base.c
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+++ b/drivers/xen/events/events_base.c
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@@ -521,7 +521,7 @@ static unsigned int __startup_pirq(unsigned int irq)
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BIND_PIRQ__WILL_SHARE : 0;
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rc = HYPERVISOR_event_channel_op(EVTCHNOP_bind_pirq, &bind_pirq);
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if (rc != 0) {
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- pr_warn("Failed to obtain physical IRQ %d\n", irq);
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+ pr_warn("Failed to obtain physical IRQ %d (error %d)\n", irq, rc);
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return 0;
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}
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evtchn = bind_pirq.port;
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--
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2.17.1
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@ -1,8 +1,19 @@
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From 6bec01bac2a0b1b8d7639de2c7fd646363f57d2d Mon Sep 17 00:00:00 2001
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From: Marek Marczykowski <marmarek@invisiblethingslab.com>
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Date: Mon, 11 Jun 2012 22:49:31 +0200
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Subject: [PATCH] pvops: respect 'removable' xenstore flag for block devices
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Especially this is needed by pmount to allow mount qvm-block attached devices
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by normal user.
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---
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drivers/block/xen-blkfront.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
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index 4e86393..34493d7 100644
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index 429d20131c7e..2541d8c38336 100644
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--- a/drivers/block/xen-blkfront.c
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+++ b/drivers/block/xen-blkfront.c
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@@ -2317,6 +2317,7 @@ static void blkfront_connect(struct blkfront_info *info)
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@@ -2338,6 +2338,7 @@ static void blkfront_connect(struct blkfront_info *info)
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unsigned int binfo;
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char *envp[] = { "RESIZE=1", NULL };
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int err, i;
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@ -10,7 +21,7 @@ index 4e86393..34493d7 100644
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switch (info->connected) {
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case BLKIF_STATE_CONNECTED:
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@@ -2384,6 +2385,12 @@ static void blkfront_connect(struct blkfront_info *info)
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@@ -2405,6 +2406,12 @@ static void blkfront_connect(struct blkfront_info *info)
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}
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}
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@ -23,3 +34,6 @@ index 4e86393..34493d7 100644
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err = xlvbd_alloc_gendisk(sectors, info, binfo, sector_size,
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physical_sector_size);
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if (err) {
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--
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2.17.1
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@ -0,0 +1,34 @@
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From 6b4db8c77bd178701b3f501135ab3be08cdc43ac Mon Sep 17 00:00:00 2001
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From: Marek Marczykowski <marmarek@invisiblethingslab.com>
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Date: Sun, 15 Jul 2012 19:57:47 +0200
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Subject: [PATCH] pvops/xen-blkfront: handle FDEJECT as detach request (#630)
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---
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drivers/block/xen-blkfront.c | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
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index 2541d8c38336..3f6df7d98265 100644
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--- a/drivers/block/xen-blkfront.c
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+++ b/drivers/block/xen-blkfront.c
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@@ -47,6 +47,7 @@
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#include <linux/bitmap.h>
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#include <linux/list.h>
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#include <linux/workqueue.h>
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+#include <linux/fd.h>
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#include <xen/xen.h>
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#include <xen/xenbus.h>
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@@ -511,6 +512,9 @@ static int blkif_ioctl(struct block_device *bdev, fmode_t mode,
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return 0;
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return -EINVAL;
|
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}
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+ case FDEJECT:
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+ xenbus_switch_state(info->xbdev, XenbusStateClosing);
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+ return 0;
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default:
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/*printk(KERN_ALERT "ioctl %08x not supported by Xen blkdev\n",
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--
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2.17.1
|
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|
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@ -1,4 +1,4 @@
|
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From 19cb7d4e4efe39ef6ec8b216a254d83a1257846c Mon Sep 17 00:00:00 2001
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From a3d0a8585e975d169a3994463745620c8d8becd0 Mon Sep 17 00:00:00 2001
|
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From: Rusty Bird <rustybird@openmailbox.org>
|
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Date: Mon, 11 Jul 2016 13:05:38 +0000
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Subject: [PATCH] block: add no_part_scan module parameter
|
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@ -15,10 +15,10 @@ the /sys/module/block/parameters/no_part_scan file.
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1 file changed, 12 insertions(+)
|
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|
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diff --git a/block/genhd.c b/block/genhd.c
|
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index 9f42526..85b71f5 100644
|
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index be5bab20b2ab..f4561f06e273 100644
|
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--- a/block/genhd.c
|
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+++ b/block/genhd.c
|
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@@ -628,6 +628,15 @@
|
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@@ -643,6 +643,15 @@ static void register_disk(struct device *parent, struct gendisk *disk)
|
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WARN_ON(err);
|
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}
|
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|
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@ -34,7 +34,7 @@ index 9f42526..85b71f5 100644
|
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/**
|
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* __device_add_disk - add disk information to kernel list
|
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* @parent: parent device for the disk
|
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@@ -645,6 +654,9 @@
|
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@@ -660,6 +669,9 @@ static void __device_add_disk(struct device *parent, struct gendisk *disk,
|
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dev_t devt;
|
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int retval;
|
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|
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@ -45,5 +45,5 @@ index 9f42526..85b71f5 100644
|
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* be accompanied with EXT_DEVT flag. Make sure all
|
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* parameters make sense.
|
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--
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2.5.5
|
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2.17.1
|
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|
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@ -1,4 +1,4 @@
|
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From bf0b3f33476360b5d72f87d749409b0a2b1a57cb Mon Sep 17 00:00:00 2001
|
||||
From bb7d9fa8c1c8d2e90ea7cac04fb1fafe4965ad69 Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
|
||||
<marmarek@invisiblethingslab.com>
|
||||
Date: Tue, 15 Dec 2015 21:35:14 +0100
|
||||
@ -1,4 +1,4 @@
|
||||
From c7c1661d1b265ea620939bb5da4958eb0fb1385b Mon Sep 17 00:00:00 2001
|
||||
From 2d7190695574d4a39597a65d3ba3858098f22da4 Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
|
||||
<marmarek@invisiblethingslab.com>
|
||||
Date: Wed, 16 Dec 2015 05:09:55 +0100
|
||||
@ -18,10 +18,10 @@ Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
|
||||
1 file changed, 25 insertions(+), 26 deletions(-)
|
||||
|
||||
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
|
||||
index 9dd2ca62d84a..1b6c319d74f1 100644
|
||||
index 61298526aee3..08ea5004e86b 100644
|
||||
--- a/drivers/net/xen-netfront.c
|
||||
+++ b/drivers/net/xen-netfront.c
|
||||
@@ -388,13 +388,13 @@ static void xennet_tx_buf_gc(struct netfront_queue *queue)
|
||||
@@ -387,13 +387,13 @@ static void xennet_tx_buf_gc(struct netfront_queue *queue)
|
||||
rmb(); /* Ensure we see responses up to 'rp'. */
|
||||
|
||||
for (cons = queue->tx.rsp_cons; cons != prod; cons++) {
|
||||
@ -154,7 +154,7 @@ index 9dd2ca62d84a..1b6c319d74f1 100644
|
||||
|
||||
if (skb_shinfo(skb)->nr_frags == MAX_SKB_FRAGS) {
|
||||
unsigned int pull_to = NETFRONT_SKB_CB(skb)->pull_to;
|
||||
@@ -912,7 +911,7 @@ static RING_IDX xennet_fill_frags(struct netfront_queue *queue,
|
||||
@@ -916,7 +915,7 @@ static RING_IDX xennet_fill_frags(struct netfront_queue *queue,
|
||||
|
||||
skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
|
||||
skb_frag_page(nfrag),
|
||||
@ -163,7 +163,7 @@ index 9dd2ca62d84a..1b6c319d74f1 100644
|
||||
|
||||
skb_shinfo(nskb)->nr_frags = 0;
|
||||
kfree_skb(nskb);
|
||||
@@ -1008,7 +1007,7 @@ static int xennet_poll(struct napi_struct *napi, int budget)
|
||||
@@ -1012,7 +1011,7 @@ static int xennet_poll(struct napi_struct *napi, int budget)
|
||||
i = queue->rx.rsp_cons;
|
||||
work_done = 0;
|
||||
while ((i != rp) && (work_done < budget)) {
|
||||
@ -1,4 +1,4 @@
|
||||
From 11b753cc107f41aca56ba0698a1bd6b806cd6795 Mon Sep 17 00:00:00 2001
|
||||
From a72bc89ab6d6c7e171bd04357ea6954a9c62b43d Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
|
||||
<marmarek@invisiblethingslab.com>
|
||||
Date: Wed, 16 Dec 2015 05:19:37 +0100
|
||||
@ -20,10 +20,10 @@ Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
|
||||
1 file changed, 5 insertions(+), 4 deletions(-)
|
||||
|
||||
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
|
||||
index 1b6c319d74f1..026d39702217 100644
|
||||
index 08ea5004e86b..88578e5aeaaf 100644
|
||||
--- a/drivers/net/xen-netfront.c
|
||||
+++ b/drivers/net/xen-netfront.c
|
||||
@@ -459,7 +459,7 @@ static void xennet_tx_setup_grant(unsigned long gfn, unsigned int offset,
|
||||
@@ -458,7 +458,7 @@ static void xennet_tx_setup_grant(unsigned long gfn, unsigned int offset,
|
||||
tx->flags = 0;
|
||||
|
||||
info->tx = tx;
|
||||
@ -1,4 +1,4 @@
|
||||
From f8bc4b3be49e47dcf005ce12ef25071fe16bd45b Mon Sep 17 00:00:00 2001
|
||||
From 91bac2da855a018b8ffd1bed9694e9c962340f08 Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
|
||||
<marmarek@invisiblethingslab.com>
|
||||
Date: Wed, 16 Dec 2015 05:22:24 +0100
|
||||
@ -19,10 +19,10 @@ Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
|
||||
1 file changed, 1 insertion(+)
|
||||
|
||||
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
|
||||
index 026d39702217..4150128ab893 100644
|
||||
index 88578e5aeaaf..69e1c3aebe71 100644
|
||||
--- a/drivers/net/xen-netfront.c
|
||||
+++ b/drivers/net/xen-netfront.c
|
||||
@@ -395,6 +395,7 @@ static void xennet_tx_buf_gc(struct netfront_queue *queue)
|
||||
@@ -394,6 +394,7 @@ static void xennet_tx_buf_gc(struct netfront_queue *queue)
|
||||
continue;
|
||||
|
||||
id = txrsp.id;
|
||||
@ -1,4 +1,4 @@
|
||||
From 26baa3367516dac7e376e2595d187dd9887bf0e0 Mon Sep 17 00:00:00 2001
|
||||
From bfad51710e1523650c2cfbf9aff561bb8364d9a7 Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
|
||||
<marmarek@invisiblethingslab.com>
|
||||
Date: Wed, 16 Dec 2015 05:51:10 +0100
|
||||
@ -20,10 +20,10 @@ Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
|
||||
1 file changed, 17 insertions(+), 17 deletions(-)
|
||||
|
||||
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
|
||||
index b5cedccb5d7d..87781c076733 100644
|
||||
index 3f6df7d98265..e520bc6f6007 100644
|
||||
--- a/drivers/block/xen-blkfront.c
|
||||
+++ b/drivers/block/xen-blkfront.c
|
||||
@@ -1548,7 +1548,7 @@ static bool blkif_completion(unsigned long *id,
|
||||
@@ -1551,7 +1551,7 @@ static bool blkif_completion(unsigned long *id,
|
||||
static irqreturn_t blkif_interrupt(int irq, void *dev_id)
|
||||
{
|
||||
struct request *req;
|
||||
@ -32,7 +32,7 @@ index b5cedccb5d7d..87781c076733 100644
|
||||
RING_IDX i, rp;
|
||||
unsigned long flags;
|
||||
struct blkfront_ring_info *rinfo = (struct blkfront_ring_info *)dev_id;
|
||||
@@ -1565,8 +1565,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
|
||||
@@ -1568,8 +1568,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
|
||||
for (i = rinfo->ring.rsp_cons; i != rp; i++) {
|
||||
unsigned long id;
|
||||
|
||||
@ -43,7 +43,7 @@ index b5cedccb5d7d..87781c076733 100644
|
||||
/*
|
||||
* The backend has messed up and given us an id that we would
|
||||
* never have given to it (we stamp it up to BLK_RING_SIZE -
|
||||
@@ -1574,39 +1574,39 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
|
||||
@@ -1577,39 +1577,39 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
|
||||
*/
|
||||
if (id >= BLK_RING_SIZE(info)) {
|
||||
WARN(1, "%s: response to %s has incorrect id (%ld)\n",
|
||||
@ -91,7 +91,7 @@ index b5cedccb5d7d..87781c076733 100644
|
||||
blkif_req(req)->error = BLK_STS_NOTSUPP;
|
||||
info->feature_discard = 0;
|
||||
info->feature_secdiscard = 0;
|
||||
@@ -1616,15 +1616,15 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
|
||||
@@ -1619,15 +1619,15 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
|
||||
break;
|
||||
case BLKIF_OP_FLUSH_DISKCACHE:
|
||||
case BLKIF_OP_WRITE_BARRIER:
|
||||
@ -111,7 +111,7 @@ index b5cedccb5d7d..87781c076733 100644
|
||||
blkif_req(req)->error = BLK_STS_NOTSUPP;
|
||||
}
|
||||
if (unlikely(blkif_req(req)->error)) {
|
||||
@@ -1637,9 +1637,9 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
|
||||
@@ -1640,9 +1640,9 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
|
||||
/* fall through */
|
||||
case BLKIF_OP_READ:
|
||||
case BLKIF_OP_WRITE:
|
||||
@ -1,4 +1,4 @@
|
||||
From 5c574ee1c388258969b2c66d46db20be16c3aeb3 Mon Sep 17 00:00:00 2001
|
||||
From 98231d38e75826534ef10b0ea06ecde796b89c3c Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
|
||||
<marmarek@invisiblethingslab.com>
|
||||
Date: Wed, 16 Dec 2015 06:07:14 +0100
|
||||
@ -22,10 +22,10 @@ Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
|
||||
1 file changed, 44 insertions(+), 32 deletions(-)
|
||||
|
||||
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
|
||||
index 87781c076733..3da0f6be24c9 100644
|
||||
index e520bc6f6007..8132836e225b 100644
|
||||
--- a/drivers/block/xen-blkfront.c
|
||||
+++ b/drivers/block/xen-blkfront.c
|
||||
@@ -524,19 +524,16 @@ static int blkif_ioctl(struct block_device *bdev, fmode_t mode,
|
||||
@@ -527,19 +527,16 @@ static int blkif_ioctl(struct block_device *bdev, fmode_t mode,
|
||||
|
||||
static unsigned long blkif_ring_get_request(struct blkfront_ring_info *rinfo,
|
||||
struct request *req,
|
||||
@ -47,7 +47,7 @@ index 87781c076733..3da0f6be24c9 100644
|
||||
|
||||
return id;
|
||||
}
|
||||
@@ -544,23 +541,28 @@ static unsigned long blkif_ring_get_request(struct blkfront_ring_info *rinfo,
|
||||
@@ -547,23 +544,28 @@ static unsigned long blkif_ring_get_request(struct blkfront_ring_info *rinfo,
|
||||
static int blkif_queue_discard_req(struct request *req, struct blkfront_ring_info *rinfo)
|
||||
{
|
||||
struct blkfront_info *info = rinfo->dev_info;
|
||||
@ -84,7 +84,7 @@ index 87781c076733..3da0f6be24c9 100644
|
||||
|
||||
return 0;
|
||||
}
|
||||
@@ -692,7 +694,7 @@ static void blkif_setup_extra_req(struct blkif_request *first,
|
||||
@@ -695,7 +697,7 @@ static void blkif_setup_extra_req(struct blkif_request *first,
|
||||
static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *rinfo)
|
||||
{
|
||||
struct blkfront_info *info = rinfo->dev_info;
|
||||
@ -93,7 +93,7 @@ index 87781c076733..3da0f6be24c9 100644
|
||||
unsigned long id, extra_id = NO_ASSOCIATED_ID;
|
||||
bool require_extra_req = false;
|
||||
int i;
|
||||
@@ -757,16 +759,16 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
|
||||
@@ -760,16 +762,16 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
|
||||
* BLKIF_OP_WRITE
|
||||
*/
|
||||
BUG_ON(req_op(req) == REQ_OP_FLUSH || req->cmd_flags & REQ_FUA);
|
||||
@ -118,7 +118,7 @@ index 87781c076733..3da0f6be24c9 100644
|
||||
BLKIF_OP_WRITE : BLKIF_OP_READ;
|
||||
if (req_op(req) == REQ_OP_FLUSH || req->cmd_flags & REQ_FUA) {
|
||||
/*
|
||||
@@ -777,15 +779,15 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
|
||||
@@ -780,15 +782,15 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
|
||||
* since it is guaranteed ordered WRT previous writes.)
|
||||
*/
|
||||
if (info->feature_flush && info->feature_fua)
|
||||
@ -138,7 +138,7 @@ index 87781c076733..3da0f6be24c9 100644
|
||||
if (unlikely(require_extra_req)) {
|
||||
extra_id = blkif_ring_get_request(rinfo, req,
|
||||
&extra_ring_req);
|
||||
@@ -795,7 +797,7 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
|
||||
@@ -798,7 +800,7 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
|
||||
*/
|
||||
rinfo->shadow[extra_id].num_sg = 0;
|
||||
|
||||
@ -147,7 +147,7 @@ index 87781c076733..3da0f6be24c9 100644
|
||||
|
||||
/* Link the 2 requests together */
|
||||
rinfo->shadow[extra_id].associated_id = id;
|
||||
@@ -803,12 +805,12 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
|
||||
@@ -806,12 +808,12 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
|
||||
}
|
||||
}
|
||||
|
||||
@ -162,7 +162,7 @@ index 87781c076733..3da0f6be24c9 100644
|
||||
|
||||
for_each_sg(rinfo->shadow[id].sg, sg, num_sg, i) {
|
||||
BUG_ON(sg->offset + sg->length > PAGE_SIZE);
|
||||
@@ -830,10 +832,20 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
|
||||
@@ -833,10 +835,20 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
|
||||
if (setup.segments)
|
||||
kunmap_atomic(setup.segments);
|
||||
|
||||
@ -0,0 +1,75 @@
|
||||
From ca6107528e5b5c986b64297ae62f706b5b391b0c Mon Sep 17 00:00:00 2001
|
||||
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
|
||||
Date: Wed, 1 Apr 2015 17:01:26 -0400
|
||||
Subject: [PATCH] xen/pcifront/pciback: Update pciif.h with ->err and ->result
|
||||
values.
|
||||
|
||||
The '->err' should contain only the XEN_PCI_ERR_* type values.
|
||||
The '->result' may contain -EXX values or any other value
|
||||
that the XEN_PCI_OP_* deems appropiate.
|
||||
|
||||
As such update the header and also the implementations.
|
||||
|
||||
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
|
||||
|
||||
Details in this thread:
|
||||
https://patchwork.kernel.org/patch/8258431/
|
||||
---
|
||||
drivers/pci/xen-pcifront.c | 2 +-
|
||||
drivers/xen/xen-pciback/pciback_ops.c | 2 +-
|
||||
include/xen/interface/io/pciif.h | 6 ++++--
|
||||
3 files changed, 6 insertions(+), 4 deletions(-)
|
||||
|
||||
diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
|
||||
index eba6e33147a2..cc6dcb13f1a8 100644
|
||||
--- a/drivers/pci/xen-pcifront.c
|
||||
+++ b/drivers/pci/xen-pcifront.c
|
||||
@@ -298,7 +298,7 @@ static int pci_frontend_enable_msix(struct pci_dev *dev,
|
||||
} else {
|
||||
pci_err(dev, "enable msix get err %x\n", err);
|
||||
}
|
||||
- return err;
|
||||
+ return err ? -EINVAL : 0;
|
||||
}
|
||||
|
||||
static void pci_frontend_disable_msix(struct pci_dev *dev)
|
||||
diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c
|
||||
index ea4a08b83fa0..2d63aa2946a3 100644
|
||||
--- a/drivers/xen/xen-pciback/pciback_ops.c
|
||||
+++ b/drivers/xen/xen-pciback/pciback_ops.c
|
||||
@@ -268,7 +268,7 @@ int xen_pcibk_enable_msix(struct xen_pcibk_device *pdev,
|
||||
if (dev_data)
|
||||
dev_data->ack_intr = 0;
|
||||
|
||||
- return result > 0 ? 0 : result;
|
||||
+ return result >= 0 ? 0 : XEN_PCI_ERR_op_failed;
|
||||
}
|
||||
|
||||
static
|
||||
diff --git a/include/xen/interface/io/pciif.h b/include/xen/interface/io/pciif.h
|
||||
index d9922ae36eb5..c8b674fd2455 100644
|
||||
--- a/include/xen/interface/io/pciif.h
|
||||
+++ b/include/xen/interface/io/pciif.h
|
||||
@@ -70,7 +70,7 @@ struct xen_pci_op {
|
||||
/* IN: what action to perform: XEN_PCI_OP_* */
|
||||
uint32_t cmd;
|
||||
|
||||
- /* OUT: will contain an error number (if any) from errno.h */
|
||||
+ /* OUT: will contain an XEN_PCI_ERR_* number. */
|
||||
int32_t err;
|
||||
|
||||
/* IN: which device to touch */
|
||||
@@ -82,7 +82,9 @@ struct xen_pci_op {
|
||||
int32_t offset;
|
||||
int32_t size;
|
||||
|
||||
- /* IN/OUT: Contains the result after a READ or the value to WRITE */
|
||||
+ /* IN/OUT: Contains the result after a READ or the value to WRITE.
|
||||
+ * If the err does not have XEN_PCI_ERR_success, depending on
|
||||
+ * XEN_PCI_OP_* might have the errno value. */
|
||||
uint32_t value;
|
||||
/* IN: Contains extra infor for this operation */
|
||||
uint32_t info;
|
||||
--
|
||||
2.17.1
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
From 292dcb5eb9ceedeb981eb926be566af8c99cbb26 Mon Sep 17 00:00:00 2001
|
||||
From 7cea4f1e3e43d8fc20e2605495d6ed24bfeeeb9b Mon Sep 17 00:00:00 2001
|
||||
From: HW42 <hw42@ipsumj.de>
|
||||
Date: Tue, 12 Sep 2017 00:49:02 +0200
|
||||
Subject: [PATCH] xen-pciback: add attribute to allow MSI enable flag writes
|
||||
@ -14,14 +14,16 @@ guest (or stubdom) can already generate MSIs through other ways, see
|
||||
|
||||
[1]: https://invisiblethingslab.com/resources/2011/Software%20Attacks%20on%20Intel%20VT-d.pdf
|
||||
---
|
||||
drivers/xen/xen-pciback/conf_space_capability.c | 39 +++++++++++++++
|
||||
drivers/xen/xen-pciback/pci_stub.c | 65 +++++++++++++++++++++++++
|
||||
.../xen/xen-pciback/conf_space_capability.c | 39 +++++++++++
|
||||
drivers/xen/xen-pciback/pci_stub.c | 64 +++++++++++++++++++
|
||||
drivers/xen/xen-pciback/pciback.h | 1 +
|
||||
3 files changed, 105 insertions(+)
|
||||
3 files changed, 104 insertions(+)
|
||||
|
||||
diff --git a/drivers/xen/xen-pciback/conf_space_capability.c b/drivers/xen/xen-pciback/conf_space_capability.c
|
||||
index 73427d8e0116..a277ddc7f7b4 100644
|
||||
--- a/drivers/xen/xen-pciback/conf_space_capability.c
|
||||
+++ b/drivers/xen/xen-pciback/conf_space_capability.c
|
||||
@@ -190,6 +190,40 @@ static const struct config_field caplist
|
||||
@@ -190,6 +190,40 @@ static const struct config_field caplist_pm[] = {
|
||||
{}
|
||||
};
|
||||
|
||||
@ -62,7 +64,7 @@ guest (or stubdom) can already generate MSIs through other ways, see
|
||||
static struct xen_pcibk_config_capability xen_pcibk_config_capability_pm = {
|
||||
.capability = PCI_CAP_ID_PM,
|
||||
.fields = caplist_pm,
|
||||
@@ -198,11 +232,16 @@ static struct xen_pcibk_config_capabilit
|
||||
@@ -198,11 +232,16 @@ static struct xen_pcibk_config_capability xen_pcibk_config_capability_vpd = {
|
||||
.capability = PCI_CAP_ID_VPD,
|
||||
.fields = caplist_vpd,
|
||||
};
|
||||
@ -79,9 +81,11 @@ guest (or stubdom) can already generate MSIs through other ways, see
|
||||
|
||||
return 0;
|
||||
}
|
||||
diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c
|
||||
index 59661db144e5..51a116f37b95 100644
|
||||
--- a/drivers/xen/xen-pciback/pci_stub.c
|
||||
+++ b/drivers/xen/xen-pciback/pci_stub.c
|
||||
@@ -303,6 +303,8 @@ void pcistub_put_pci_dev(struct pci_dev
|
||||
@@ -303,6 +303,8 @@ void pcistub_put_pci_dev(struct pci_dev *dev)
|
||||
xen_pcibk_config_reset_dev(dev);
|
||||
xen_pcibk_config_free_dyn_fields(dev);
|
||||
|
||||
@ -90,7 +94,7 @@ guest (or stubdom) can already generate MSIs through other ways, see
|
||||
xen_unregister_device_domain_owner(dev);
|
||||
|
||||
spin_lock_irqsave(&found_psdev->lock, flags);
|
||||
@@ -1430,6 +1432,63 @@ static ssize_t permissive_show(struct de
|
||||
@@ -1430,6 +1432,63 @@ static ssize_t permissive_show(struct device_driver *drv, char *buf)
|
||||
}
|
||||
static DRIVER_ATTR_RW(permissive);
|
||||
|
||||
@ -154,15 +158,15 @@ guest (or stubdom) can already generate MSIs through other ways, see
|
||||
static void pcistub_exit(void)
|
||||
{
|
||||
driver_remove_file(&xen_pcibk_pci_driver.driver, &driver_attr_new_slot);
|
||||
@@ -1440,6 +1499,8 @@ static void pcistub_exit(void)
|
||||
@@ -1439,6 +1498,8 @@ static void pcistub_exit(void)
|
||||
driver_remove_file(&xen_pcibk_pci_driver.driver, &driver_attr_quirks);
|
||||
driver_remove_file(&xen_pcibk_pci_driver.driver,
|
||||
&driver_attr_permissive);
|
||||
driver_remove_file(&xen_pcibk_pci_driver.driver,
|
||||
+ &driver_attr_allow_msi_enable);
|
||||
+ driver_remove_file(&xen_pcibk_pci_driver.driver,
|
||||
+ &driver_attr_allow_msi_enable);
|
||||
driver_remove_file(&xen_pcibk_pci_driver.driver,
|
||||
&driver_attr_irq_handlers);
|
||||
driver_remove_file(&xen_pcibk_pci_driver.driver,
|
||||
&driver_attr_irq_handler_state);
|
||||
@@ -1529,6 +1590,9 @@ static int __init pcistub_init(void)
|
||||
if (!err)
|
||||
err = driver_create_file(&xen_pcibk_pci_driver.driver,
|
||||
@ -173,6 +177,8 @@ guest (or stubdom) can already generate MSIs through other ways, see
|
||||
|
||||
if (!err)
|
||||
err = driver_create_file(&xen_pcibk_pci_driver.driver,
|
||||
diff --git a/drivers/xen/xen-pciback/pciback.h b/drivers/xen/xen-pciback/pciback.h
|
||||
index 263c059bff90..796f949c92be 100644
|
||||
--- a/drivers/xen/xen-pciback/pciback.h
|
||||
+++ b/drivers/xen/xen-pciback/pciback.h
|
||||
@@ -45,6 +45,7 @@ struct xen_pcibk_dev_data {
|
||||
@ -183,3 +189,6 @@ guest (or stubdom) can already generate MSIs through other ways, see
|
||||
unsigned int warned_on_write:1;
|
||||
unsigned int enable_intx:1;
|
||||
unsigned int isr_on:1; /* Whether the IRQ handler is installed. */
|
||||
--
|
||||
2.17.1
|
||||
|
||||
@ -1,13 +0,0 @@
|
||||
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
|
||||
index 524c221..acb29f4 100644
|
||||
--- a/drivers/xen/events/events_base.c
|
||||
+++ b/drivers/xen/events/events_base.c
|
||||
@@ -519,7 +519,7 @@ static unsigned int __startup_pirq(unsigned int irq)
|
||||
BIND_PIRQ__WILL_SHARE : 0;
|
||||
rc = HYPERVISOR_event_channel_op(EVTCHNOP_bind_pirq, &bind_pirq);
|
||||
if (rc != 0) {
|
||||
- pr_warn("Failed to obtain physical IRQ %d\n", irq);
|
||||
+ pr_warn("Failed to obtain physical IRQ %d (error %d)\n", irq, rc);
|
||||
return 0;
|
||||
}
|
||||
evtchn = bind_pirq.port;
|
||||
@ -1,104 +0,0 @@
|
||||
From xen-devel-bounces@lists.xen.org Tue Feb 9 06:00:36 2016
|
||||
Date: Mon, 8 Feb 2016 23:59:27 -0500
|
||||
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
|
||||
To: Marek =?iso-8859-1?Q?Marczykowski-G=F3recki?=
|
||||
<marmarek@invisiblethingslab.com>
|
||||
Message-ID: <20160209045927.GC3853@localhost.localdomain>
|
||||
References: <CANQMFx4YULqKctKZqeESesTQjLQun7rQ0ZjGzq96TXTtUw6VWA@mail.gmail.com>
|
||||
<20160127183005.GB3134@char.us.oracle.com>
|
||||
<CANQMFx5macG2AbNWtrKjs6o445_Jo7+twMaDg6ozE=0DSD_n7A@mail.gmail.com>
|
||||
<1454323426.28781.73.camel@citrix.com>
|
||||
<20160201145053.GA21826@char.us.oracle.com>
|
||||
<20160203142230.GC24446@mail-itl>
|
||||
<20160203152657.GE20732@char.us.oracle.com>
|
||||
<20160208173917.GD24446@mail-itl>
|
||||
MIME-Version: 1.0
|
||||
Content-Disposition: inline
|
||||
In-Reply-To: <20160208173917.GD24446@mail-itl>
|
||||
User-Agent: Mutt/1.5.24 (2015-08-30)
|
||||
Cc: Tommi Airikka <tommi@airikka.net>, Ian Campbell <ian.campbell@citrix.com>,
|
||||
810379@bugs.debian.org, xen-devel@lists.xen.org
|
||||
Subject: Re: [Xen-devel] [BUG] pci-passthrough generates "xen:events: Failed
|
||||
to obtain physical IRQ" for some devices
|
||||
|
||||
I posted it at some point. It was that the MSI-X enable op stashes the
|
||||
error value in op->value. But 'op->value' is an unsigned int so the
|
||||
value ends up being 0xfffffe or such. And the other PV frontends only
|
||||
check for !0 - and manufacture their own value (-EINVAL).
|
||||
|
||||
Hence I want to update the pciff.h .. Oh here is the patch:
|
||||
Oh man. A year?!
|
||||
|
||||
Anyhow this can be posted as a cleanup patch seperately of the
|
||||
bug-fixes.
|
||||
|
||||
commit 393be47782bca7a24d3e365448d4d3d1a303abfe
|
||||
Author: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
|
||||
Date: Wed Apr 1 17:01:26 2015 -0400
|
||||
|
||||
xen/pcifront/pciback: Update pciif.h with ->err and ->result values.
|
||||
|
||||
The '->err' should contain only the XEN_PCI_ERR_* type values.
|
||||
The '->result' may contain -EXX values or any other value
|
||||
that the XEN_PCI_OP_* deems appropiate.
|
||||
|
||||
As such update the header and also the implementations.
|
||||
|
||||
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
|
||||
|
||||
Conflicts:
|
||||
drivers/xen/xen-pciback/pciback_ops.c
|
||||
|
||||
Conflicts:
|
||||
drivers/xen/xen-pciback/pciback_ops.c
|
||||
|
||||
diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
|
||||
index 8785014..d458e53 100644
|
||||
--- a/drivers/pci/xen-pcifront.c
|
||||
+++ b/drivers/pci/xen-pcifront.c
|
||||
@@ -298,7 +298,7 @@ static int pci_frontend_enable_msix(struct pci_dev *dev,
|
||||
} else {
|
||||
pci_err(dev, "enable msix get err %x\n", err);
|
||||
}
|
||||
- return err;
|
||||
+ return err ? -EINVAL : 0;
|
||||
}
|
||||
|
||||
static void pci_frontend_disable_msix(struct pci_dev *dev)
|
||||
diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c
|
||||
index ee2c891..573590b 100644
|
||||
--- a/drivers/xen/xen-pciback/pciback_ops.c
|
||||
+++ b/drivers/xen/xen-pciback/pciback_ops.c
|
||||
@@ -268,7 +268,7 @@ int xen_pcibk_enable_msix(struct xen_pcibk_device *pdev,
|
||||
if (dev_data)
|
||||
dev_data->ack_intr = 0;
|
||||
|
||||
- return result > 0 ? 0 : result;
|
||||
+ return result >= 0 ? 0 : XEN_PCI_ERR_op_failed;
|
||||
}
|
||||
|
||||
static
|
||||
diff --git a/include/xen/interface/io/pciif.h b/include/xen/interface/io/pciif.h
|
||||
index d9922ae..c8b674f 100644
|
||||
--- a/include/xen/interface/io/pciif.h
|
||||
+++ b/include/xen/interface/io/pciif.h
|
||||
@@ -70,7 +70,7 @@ struct xen_pci_op {
|
||||
/* IN: what action to perform: XEN_PCI_OP_* */
|
||||
uint32_t cmd;
|
||||
|
||||
- /* OUT: will contain an error number (if any) from errno.h */
|
||||
+ /* OUT: will contain an XEN_PCI_ERR_* number. */
|
||||
int32_t err;
|
||||
|
||||
/* IN: which device to touch */
|
||||
@@ -82,7 +82,9 @@ struct xen_pci_op {
|
||||
int32_t offset;
|
||||
int32_t size;
|
||||
|
||||
- /* IN/OUT: Contains the result after a READ or the value to WRITE */
|
||||
+ /* IN/OUT: Contains the result after a READ or the value to WRITE.
|
||||
+ * If the err does not have XEN_PCI_ERR_success, depending on
|
||||
+ * XEN_PCI_OP_* might have the errno value. */
|
||||
uint32_t value;
|
||||
/* IN: Contains extra infor for this operation */
|
||||
uint32_t info;
|
||||
File diff suppressed because it is too large
Load Diff
@ -1,20 +0,0 @@
|
||||
--- linux-3.4.1.orig/drivers/block/xen-blkfront.c 2012-06-01 09:18:44.000000000 +0200
|
||||
+++ linux-3.4.1/drivers/block/xen-blkfront.c 2012-07-15 15:54:31.350255623 +0200
|
||||
@@ -44,6 +44,7 @@
|
||||
#include <linux/scatterlist.h>
|
||||
#include <linux/bitmap.h>
|
||||
#include <linux/list.h>
|
||||
+#include <linux/fd.h>
|
||||
|
||||
#include <xen/xen.h>
|
||||
#include <xen/xenbus.h>
|
||||
@@ -241,6 +264,9 @@
|
||||
return 0;
|
||||
return -EINVAL;
|
||||
}
|
||||
+ case FDEJECT:
|
||||
+ xenbus_switch_state(info->xbdev, XenbusStateClosing);
|
||||
+ return 0;
|
||||
|
||||
default:
|
||||
/*printk(KERN_ALERT "ioctl %08x not supported by Xen blkdev\n",
|
||||
@ -1,167 +0,0 @@
|
||||
From 59e44d8c45afe91204e90229bef64a6d2c5ac103 Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
|
||||
<marmarek@invisiblethingslab.com>
|
||||
Date: Thu, 6 Sep 2018 15:09:44 +0200
|
||||
Subject: [PATCH] xen/balloon: add runtime control for scrubbing ballooned out
|
||||
pages
|
||||
|
||||
Scrubbing pages on initial balloon down can take some time, especially
|
||||
in nested virtualization case (nested EPT is slow). When HVM/PVH guest is
|
||||
started with memory= significantly lower than maxmem=, all the extra
|
||||
pages will be scrubbed before returning to Xen. But since most of them
|
||||
weren't used at all at that point, Xen needs to populate them first
|
||||
(from populate-on-demand pool). In nested virt case (Xen inside KVM)
|
||||
this slows down the guest boot by 15-30s with just 1.5GB needed to be
|
||||
returned to Xen.
|
||||
|
||||
Add runtime parameter to enable/disable it, to allow initially disabling
|
||||
scrubbing, then enable it back during boot (for example in initramfs).
|
||||
Such usage relies on assumption that a) most pages ballooned out during
|
||||
initial boot weren't used at all, and b) even if they were, very few
|
||||
secrets are in the guest at that time (before any serious userspace
|
||||
kicks in).
|
||||
Convert CONFIG_XEN_SCRUB_PAGES to CONFIG_XEN_SCRUB_PAGES_DEFAULT (also
|
||||
enabled by default), controlling default value for the new runtime
|
||||
switch.
|
||||
|
||||
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
|
||||
|
||||
---
|
||||
.../ABI/stable/sysfs-devices-system-xen_memory | 9 +++++++++
|
||||
Documentation/admin-guide/kernel-parameters.txt | 6 ++++++
|
||||
drivers/xen/Kconfig | 10 +++++++---
|
||||
drivers/xen/balloon.c | 9 ++++++---
|
||||
drivers/xen/xen-balloon.c | 2 ++
|
||||
include/xen/balloon.h | 1 +
|
||||
6 files changed, 31 insertions(+), 6 deletions(-)
|
||||
|
||||
diff --git a/Documentation/ABI/stable/sysfs-devices-system-xen_memory b/Documentation/ABI/stable/sysfs-devices-system-xen_memory
|
||||
index caa311d59ac1..6d83f95a8a8e 100644
|
||||
--- a/Documentation/ABI/stable/sysfs-devices-system-xen_memory
|
||||
+++ b/Documentation/ABI/stable/sysfs-devices-system-xen_memory
|
||||
@@ -75,3 +75,12 @@ Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
|
||||
Description:
|
||||
Amount (in KiB) of low (or normal) memory in the
|
||||
balloon.
|
||||
+
|
||||
+What: /sys/devices/system/xen_memory/xen_memory0/scrub_pages
|
||||
+Date: September 2018
|
||||
+KernelVersion: 4.20
|
||||
+Contact: xen-devel@lists.xenproject.org
|
||||
+Description:
|
||||
+ Control scrubbing pages before returning them to Xen for others domains
|
||||
+ use. Can be set with xen_scrub_pages cmdline
|
||||
+ parameter. Default value controlled with CONFIG_XEN_SCRUB_PAGES_DEFAULT.
|
||||
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
|
||||
index 1370b424a453..c62691ddd476 100644
|
||||
--- a/Documentation/admin-guide/kernel-parameters.txt
|
||||
+++ b/Documentation/admin-guide/kernel-parameters.txt
|
||||
@@ -4921,6 +4921,12 @@
|
||||
Disables the PV optimizations forcing the HVM guest to
|
||||
run as generic HVM guest with no PV drivers.
|
||||
|
||||
+ xen_scrub_pages= [XEN]
|
||||
+ Boolean option to control scrubbing pages before giving them back
|
||||
+ to Xen, for use by other domains. Can be also changed at runtime
|
||||
+ with /sys/devices/system/xen_memory/xen_memory0/scrub_pages.
|
||||
+ Default value controlled with CONFIG_XEN_SCRUB_PAGES_DEFAULT.
|
||||
+
|
||||
xirc2ps_cs= [NET,PCMCIA]
|
||||
Format:
|
||||
<irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]
|
||||
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
|
||||
index e5d0c28372ea..2f0353290ce5 100644
|
||||
--- a/drivers/xen/Kconfig
|
||||
+++ b/drivers/xen/Kconfig
|
||||
@@ -79,15 +79,19 @@ config XEN_BALLOON_MEMORY_HOTPLUG_LIMIT
|
||||
This value is used to allocate enough space in internal
|
||||
tables needed for physical memory administration.
|
||||
|
||||
-config XEN_SCRUB_PAGES
|
||||
- bool "Scrub pages before returning them to system"
|
||||
+config XEN_SCRUB_PAGES_DEFAULT
|
||||
+ bool "Scrub pages before returning them to system by default"
|
||||
depends on XEN_BALLOON
|
||||
default y
|
||||
help
|
||||
Scrub pages before returning them to the system for reuse by
|
||||
other domains. This makes sure that any confidential data
|
||||
is not accidentally visible to other domains. Is it more
|
||||
- secure, but slightly less efficient.
|
||||
+ secure, but slightly less efficient. This can be controlled with
|
||||
+ xen_scrub_pages=0 parameter and
|
||||
+ /sys/devices/system/xen_memory/xen_memory0/scrub_pages.
|
||||
+ This option only sets the default value.
|
||||
+
|
||||
If in doubt, say yes.
|
||||
|
||||
config XEN_DEV_EVTCHN
|
||||
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
|
||||
index 065f0b607373..a3e5dfa71796 100644
|
||||
--- a/drivers/xen/balloon.c
|
||||
+++ b/drivers/xen/balloon.c
|
||||
@@ -56,6 +56,7 @@
|
||||
#include <linux/percpu-defs.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/sysctl.h>
|
||||
+#include <linux/moduleparam.h>
|
||||
|
||||
#include <asm/page.h>
|
||||
#include <asm/pgalloc.h>
|
||||
@@ -74,6 +75,9 @@
|
||||
|
||||
static int xen_hotplug_unpopulated;
|
||||
|
||||
+bool __read_mostly xen_scrub_pages = IS_ENABLED(CONFIG_XEN_SCRUB_PAGES_DEFAULT);
|
||||
+core_param(xen_scrub_pages, xen_scrub_pages, bool, 0);
|
||||
+
|
||||
#ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG
|
||||
|
||||
static int zero;
|
||||
@@ -159,9 +163,8 @@ static DECLARE_DELAYED_WORK(balloon_worker, balloon_process);
|
||||
|
||||
static void scrub_page(struct page *page)
|
||||
{
|
||||
-#ifdef CONFIG_XEN_SCRUB_PAGES
|
||||
- clear_highpage(page);
|
||||
-#endif
|
||||
+ if (xen_scrub_pages)
|
||||
+ clear_highpage(page);
|
||||
}
|
||||
|
||||
/* balloon_append: add the given page to the balloon. */
|
||||
diff --git a/drivers/xen/xen-balloon.c b/drivers/xen/xen-balloon.c
|
||||
index b437fccd4e62..a3dd7c6ec371 100644
|
||||
--- a/drivers/xen/xen-balloon.c
|
||||
+++ b/drivers/xen/xen-balloon.c
|
||||
@@ -137,6 +137,7 @@ static DEVICE_ULONG_ATTR(schedule_delay, 0444, balloon_stats.schedule_delay);
|
||||
static DEVICE_ULONG_ATTR(max_schedule_delay, 0644, balloon_stats.max_schedule_delay);
|
||||
static DEVICE_ULONG_ATTR(retry_count, 0444, balloon_stats.retry_count);
|
||||
static DEVICE_ULONG_ATTR(max_retry_count, 0644, balloon_stats.max_retry_count);
|
||||
+static DEVICE_BOOL_ATTR(scrub_pages, 0644, xen_scrub_pages);
|
||||
|
||||
static ssize_t show_target_kb(struct device *dev, struct device_attribute *attr,
|
||||
char *buf)
|
||||
@@ -203,6 +204,7 @@ static struct attribute *balloon_attrs[] = {
|
||||
&dev_attr_max_schedule_delay.attr.attr,
|
||||
&dev_attr_retry_count.attr.attr,
|
||||
&dev_attr_max_retry_count.attr.attr,
|
||||
+ &dev_attr_scrub_pages.attr.attr,
|
||||
NULL
|
||||
};
|
||||
|
||||
diff --git a/include/xen/balloon.h b/include/xen/balloon.h
|
||||
index 61f410fd74e4..0ec832b9ff55 100644
|
||||
--- a/include/xen/balloon.h
|
||||
+++ b/include/xen/balloon.h
|
||||
@@ -21,6 +21,7 @@ struct balloon_stats {
|
||||
};
|
||||
|
||||
extern struct balloon_stats balloon_stats;
|
||||
+extern bool xen_scrub_pages;
|
||||
|
||||
void balloon_set_new_target(unsigned long target);
|
||||
|
||||
--
|
||||
2.17.1
|
||||
|
||||
@ -1,49 +0,0 @@
|
||||
From: Jan Beulich <jbeulich@suse.com>
|
||||
Subject: xen-netback: fix input validation in xenvif_set_hash_mapping()
|
||||
|
||||
Both len and off are frontend specified values, so we need to make
|
||||
sure there's no overflow when adding the two for the bounds check. We
|
||||
also want to avoid undefined behavior and hence use off to index into
|
||||
->hash.mapping[] only after bounds checking. This at the same time
|
||||
allows to take care of not applying off twice for the bounds checking
|
||||
against vif->num_queues.
|
||||
|
||||
It is also insufficient to bounds check copy_op.len, as this is len
|
||||
truncated to 16 bits.
|
||||
|
||||
This is XSA-270.
|
||||
|
||||
Signed-off-by: Jan Beulich <jbeulich@suse.com>
|
||||
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
|
||||
Tested-by: Paul Durrant <paul.durrant@citrix.com>
|
||||
|
||||
--- a/drivers/net/xen-netback/hash.c
|
||||
+++ b/drivers/net/xen-netback/hash.c
|
||||
@@ -332,20 +332,22 @@ u32 xenvif_set_hash_mapping_size(struct
|
||||
u32 xenvif_set_hash_mapping(struct xenvif *vif, u32 gref, u32 len,
|
||||
u32 off)
|
||||
{
|
||||
- u32 *mapping = &vif->hash.mapping[off];
|
||||
+ u32 *mapping = vif->hash.mapping;
|
||||
struct gnttab_copy copy_op = {
|
||||
.source.u.ref = gref,
|
||||
.source.domid = vif->domid,
|
||||
- .dest.u.gmfn = virt_to_gfn(mapping),
|
||||
.dest.domid = DOMID_SELF,
|
||||
- .dest.offset = xen_offset_in_page(mapping),
|
||||
- .len = len * sizeof(u32),
|
||||
+ .len = len * sizeof(*mapping),
|
||||
.flags = GNTCOPY_source_gref
|
||||
};
|
||||
|
||||
- if ((off + len > vif->hash.size) || copy_op.len > XEN_PAGE_SIZE)
|
||||
+ if ((off + len < off) || (off + len > vif->hash.size) ||
|
||||
+ len > XEN_PAGE_SIZE / sizeof(*mapping))
|
||||
return XEN_NETIF_CTRL_STATUS_INVALID_PARAMETER;
|
||||
|
||||
+ copy_op.dest.u.gmfn = virt_to_gfn(mapping + off);
|
||||
+ copy_op.dest.offset = xen_offset_in_page(mapping + off);
|
||||
+
|
||||
while (len-- != 0)
|
||||
if (mapping[off++] >= vif->num_queues)
|
||||
return XEN_NETIF_CTRL_STATUS_INVALID_PARAMETER;
|
||||
35
series.conf
35
series.conf
@ -1,28 +1,23 @@
|
||||
patches.rpmify/makefile-after_link.patch
|
||||
|
||||
patches.xen/xen-netfront-detach-crash.patch
|
||||
patches.xen/0001-mce-hide-EBUSY-initialization-error-on-Xen.patch
|
||||
patches.xen/irq-bind-debug-log.patch
|
||||
patches.xen/xen-balloon-add-runtime-control-for-scrubbing-balloo.patch
|
||||
0001-kbuild-AFTER_LINK.patch
|
||||
0002-xen-netfront-detach-crash.patch
|
||||
0003-mce-hide-EBUSY-initialization-error-on-Xen.patch
|
||||
0004-Log-error-code-of-EVTCHNOP_bind_pirq-failure.patch
|
||||
|
||||
# Additional features
|
||||
#patches.xen/pvops-0100-usb-xen-pvusb-driver.patch
|
||||
patches.xen/pvops-blkfront-removable-flag.patch
|
||||
patches.xen/pvops-blkfront-eject-support.patch
|
||||
|
||||
patches.qubes/0001-block-add-no_part_scan-module-parameter.patch
|
||||
0005-pvops-respect-removable-xenstore-flag-for-block-devi.patch
|
||||
0006-pvops-xen-blkfront-handle-FDEJECT-as-detach-request-.patch
|
||||
0007-block-add-no_part_scan-module-parameter.patch
|
||||
|
||||
# Security fixes
|
||||
patches.xen/xsa155-linux-0008-xen-Add-RING_COPY_RESPONSE.patch
|
||||
patches.xen/xsa155-linux44-0009-xen-netfront-copy-response-out-of-shared-buffer-befo.patch
|
||||
patches.xen/xsa155-linux44-0010-xen-netfront-do-not-use-data-already-exposed-to-back.patch
|
||||
patches.xen/xsa155-linux-0011-xen-netfront-add-range-check-for-Tx-response-id.patch
|
||||
patches.xen/xsa155-linux312-0012-xen-blkfront-make-local-copy-of-response-before-usin.patch
|
||||
patches.xen/xsa155-linux44-0013-xen-blkfront-prepare-request-locally-only-then-put-i.patch
|
||||
patches.xen/xsa270.patch
|
||||
0008-xen-Add-RING_COPY_RESPONSE.patch
|
||||
0009-xen-netfront-copy-response-out-of-shared-buffer-befo.patch
|
||||
0010-xen-netfront-do-not-use-data-already-exposed-to-back.patch
|
||||
0011-xen-netfront-add-range-check-for-Tx-response-id.patch
|
||||
0012-xen-blkfront-make-local-copy-of-response-before-usin.patch
|
||||
0013-xen-blkfront-prepare-request-locally-only-then-put-i.patch
|
||||
|
||||
# MSI-X enabled device passthrough fix (#1734)
|
||||
patches.xen/pci_op-cleanup.patch
|
||||
0014-xen-pcifront-pciback-Update-pciif.h-with-err-and-res.patch
|
||||
|
||||
# Fix for MSI support with stubdoms
|
||||
patches.xen/xen-pciback-add-attribute-to-allow-MSI-enable-flag-w.patch
|
||||
0015-xen-pciback-add-attribute-to-allow-MSI-enable-flag-w.patch
|
||||
|
||||
Loading…
Reference in New Issue
Block a user