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qubes-linux-kernel/patches.xen/xen-unpriv-build

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From: jbeulich@novell.com
Subject: no need to build certain bits when building non-privileged kernel
Patch-mainline: n/a
--- head-2010-05-12.orig/arch/x86/Kconfig 2010-03-25 14:39:15.000000000 +0100
+++ head-2010-05-12/arch/x86/Kconfig 2010-05-06 16:05:14.000000000 +0200
@@ -737,6 +737,7 @@ config APB_TIMER
config DMI
default y
bool "Enable DMI scanning" if EMBEDDED
+ depends on !XEN_UNPRIVILEGED_GUEST
---help---
Enabled scanning of DMI to identify machine quirks. Say Y
here unless you have verified that your setup is not
@@ -817,6 +818,7 @@ config AMD_IOMMU_STATS
# need this always selected by IOMMU for the VIA workaround
config SWIOTLB
def_bool y if X86_64 || XEN
+ prompt "Software I/O TLB" if XEN_UNPRIVILEGED_GUEST && !XEN_PCIDEV_FRONTEND
---help---
Support for software bounce buffers used on x86-64 systems
which don't have a hardware IOMMU (e.g. the current generation
@@ -2021,13 +2023,15 @@ config PCI_GOBIOS
config PCI_GOMMCONFIG
bool "MMConfig"
+ depends on !XEN_UNPRIVILEGED_GUEST
config PCI_GODIRECT
bool "Direct"
+ depends on !XEN_UNPRIVILEGED_GUEST
config PCI_GOOLPC
bool "OLPC"
- depends on OLPC
+ depends on OLPC && !XEN_UNPRIVILEGED_GUEST
config PCI_GOXEN_FE
bool "Xen PCI Frontend"
@@ -2038,6 +2042,7 @@ config PCI_GOXEN_FE
config PCI_GOANY
bool "Any"
+ depends on !XEN_UNPRIVILEGED_GUEST
endchoice
@@ -2068,7 +2073,7 @@ config PCI_MMCONFIG
config XEN_PCIDEV_FRONTEND
def_bool y
- prompt "Xen PCI Frontend" if X86_64
+ prompt "Xen PCI Frontend" if X86_64 && !XEN_UNPRIVILEGED_GUEST
depends on PCI && XEN && (PCI_GOXEN_FE || PCI_GOANY || X86_64)
select HOTPLUG
help
@@ -2213,7 +2218,7 @@ endif # X86_32
config K8_NB
def_bool y
- depends on CPU_SUP_AMD && PCI
+ depends on CPU_SUP_AMD && PCI && !XEN_UNPRIVILEGED_GUEST
source "drivers/pcmcia/Kconfig"
@@ -2264,7 +2269,9 @@ source "net/Kconfig"
source "drivers/Kconfig"
+if !XEN_UNPRIVILEGED_GUEST
source "drivers/firmware/Kconfig"
+endif
source "fs/Kconfig"
--- head-2010-05-12.orig/arch/x86/include/mach-xen/asm/swiotlb.h 2010-03-24 16:00:05.000000000 +0100
+++ head-2010-05-12/arch/x86/include/mach-xen/asm/swiotlb.h 2010-03-25 14:39:33.000000000 +0100
@@ -1,6 +1,10 @@
#include_next <asm/swiotlb.h>
+#ifdef CONFIG_SWIOTLB
#define pci_swiotlb_detect() 1
+#else
+#define swiotlb_init(verbose) ((void)(verbose))
+#endif
dma_addr_t swiotlb_map_single_phys(struct device *, phys_addr_t, size_t size,
int dir);
--- head-2010-05-12.orig/drivers/firmware/Kconfig 2009-10-21 12:05:13.000000000 +0200
+++ head-2010-05-12/drivers/firmware/Kconfig 2010-04-28 17:21:34.000000000 +0200
@@ -115,7 +115,7 @@ config DMIID
config ISCSI_IBFT_FIND
bool "iSCSI Boot Firmware Table Attributes"
- depends on X86 && !XEN_UNPRIVILEGED_GUEST
+ depends on X86
default n
help
This option enables the kernel to find the region of memory
--- head-2010-05-12.orig/drivers/xen/Kconfig 2010-03-31 14:11:36.000000000 +0200
+++ head-2010-05-12/drivers/xen/Kconfig 2010-03-31 14:12:07.000000000 +0200
@@ -275,6 +275,7 @@ config XEN_USB_FRONTEND_HCD_PM
config XEN_GRANT_DEV
tristate "User-space granted page access driver"
+ depends on XEN_BACKEND != n
default XEN_PRIVILEGED_GUEST
help
Device for accessing (in user-space) pages that have been granted
--- head-2010-05-12.orig/drivers/xen/balloon/balloon.c 2010-02-03 11:56:18.000000000 +0100
+++ head-2010-05-12/drivers/xen/balloon/balloon.c 2010-04-15 11:44:37.000000000 +0200
@@ -663,6 +663,9 @@ void balloon_update_driver_allowance(lon
bs.driver_pages += delta;
balloon_unlock(flags);
}
+EXPORT_SYMBOL_GPL(balloon_update_driver_allowance);
+
+#if defined(CONFIG_XEN_BACKEND) || defined(CONFIG_XEN_BACKEND_MODULE)
#ifdef CONFIG_XEN
static int dealloc_pte_fn(
@@ -771,6 +774,7 @@ struct page **alloc_empty_pages_and_page
pagevec = NULL;
goto out;
}
+EXPORT_SYMBOL_GPL(alloc_empty_pages_and_pagevec);
void free_empty_pages_and_pagevec(struct page **pagevec, int nr_pages)
{
@@ -791,6 +795,9 @@ void free_empty_pages_and_pagevec(struct
schedule_work(&balloon_worker);
}
+EXPORT_SYMBOL_GPL(free_empty_pages_and_pagevec);
+
+#endif /* CONFIG_XEN_BACKEND */
void balloon_release_driver_page(struct page *page)
{
@@ -804,10 +811,6 @@ void balloon_release_driver_page(struct
schedule_work(&balloon_worker);
}
-
-EXPORT_SYMBOL_GPL(balloon_update_driver_allowance);
-EXPORT_SYMBOL_GPL(alloc_empty_pages_and_pagevec);
-EXPORT_SYMBOL_GPL(free_empty_pages_and_pagevec);
EXPORT_SYMBOL_GPL(balloon_release_driver_page);
MODULE_LICENSE("Dual BSD/GPL");
--- head-2010-05-12.orig/drivers/xen/core/Makefile 2010-03-25 14:39:15.000000000 +0100
+++ head-2010-05-12/drivers/xen/core/Makefile 2010-03-25 14:39:33.000000000 +0100
@@ -2,9 +2,10 @@
# Makefile for the linux kernel.
#
-obj-y := evtchn.o gnttab.o reboot.o machine_reboot.o firmware.o
+obj-y := evtchn.o gnttab.o reboot.o machine_reboot.o
-obj-$(CONFIG_PCI) += pci.o
+priv-$(CONFIG_PCI) += pci.o
+obj-$(CONFIG_XEN_PRIVILEGED_GUEST) += firmware.o $(priv-y)
obj-$(CONFIG_PROC_FS) += xen_proc.o
obj-$(CONFIG_SYS_HYPERVISOR) += hypervisor_sysfs.o
obj-$(CONFIG_HOTPLUG_CPU) += cpu_hotplug.o
--- head-2010-05-12.orig/drivers/xen/core/gnttab.c 2010-04-15 11:44:26.000000000 +0200
+++ head-2010-05-12/drivers/xen/core/gnttab.c 2010-04-15 11:44:35.000000000 +0200
@@ -438,8 +438,6 @@ static inline unsigned int max_nr_grant_
#ifdef CONFIG_XEN
-static DEFINE_SEQLOCK(gnttab_dma_lock);
-
#ifdef CONFIG_X86
static int map_pte_fn(pte_t *pte, struct page *pmd_page,
unsigned long addr, void *data)
@@ -509,6 +507,10 @@ static int gnttab_map(unsigned int start
return 0;
}
+#if defined(CONFIG_XEN_BACKEND) || defined(CONFIG_XEN_BACKEND_MODULE)
+
+static DEFINE_SEQLOCK(gnttab_dma_lock);
+
static void gnttab_page_free(struct page *page, unsigned int order)
{
BUG_ON(order);
@@ -640,6 +642,8 @@ void __gnttab_dma_map_page(struct page *
} while (unlikely(read_seqretry(&gnttab_dma_lock, seq)));
}
+#endif /* CONFIG_XEN_BACKEND */
+
#ifdef __HAVE_ARCH_PTE_SPECIAL
static unsigned int GNTMAP_pte_special;
--- head-2010-05-12.orig/drivers/xen/privcmd/Makefile 2007-07-10 09:42:30.000000000 +0200
+++ head-2010-05-12/drivers/xen/privcmd/Makefile 2010-03-25 14:39:33.000000000 +0100
@@ -1,3 +1,3 @@
-
-obj-y += privcmd.o
-obj-$(CONFIG_COMPAT) += compat_privcmd.o
+priv-$(CONFIG_COMPAT) := compat_privcmd.o
+obj-y := privcmd.o
+obj-$(CONFIG_XEN_PRIVILEGED_GUEST) += $(priv-y)
--- head-2010-05-12.orig/drivers/xen/privcmd/privcmd.c 2010-03-24 15:12:36.000000000 +0100
+++ head-2010-05-12/drivers/xen/privcmd/privcmd.c 2010-03-25 14:39:33.000000000 +0100
@@ -33,6 +33,9 @@
static struct proc_dir_entry *privcmd_intf;
static struct proc_dir_entry *capabilities_intf;
+#ifndef CONFIG_XEN_PRIVILEGED_GUEST
+#define HAVE_ARCH_PRIVCMD_MMAP
+#endif
#ifndef HAVE_ARCH_PRIVCMD_MMAP
static int enforce_singleshot_mapping_fn(pte_t *pte, struct page *pmd_page,
unsigned long addr, void *data)
@@ -57,12 +60,14 @@ static long privcmd_ioctl(struct file *f
{
long ret;
void __user *udata = (void __user *) data;
+#ifdef CONFIG_XEN_PRIVILEGED_GUEST
unsigned long i, addr, nr, nr_pages;
int paged_out;
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
LIST_HEAD(pagelist);
struct list_head *l, *l2;
+#endif
switch (cmd) {
case IOCTL_PRIVCMD_HYPERCALL: {
@@ -87,6 +92,8 @@ static long privcmd_ioctl(struct file *f
}
break;
+#ifdef CONFIG_XEN_PRIVILEGED_GUEST
+
case IOCTL_PRIVCMD_MMAP: {
#define MMAP_NR_PER_PAGE \
(unsigned long)((PAGE_SIZE - sizeof(*l)) / sizeof(*msg))
@@ -392,6 +399,8 @@ static long privcmd_ioctl(struct file *f
}
break;
+#endif /* CONFIG_XEN_PRIVILEGED_GUEST */
+
default:
ret = -EINVAL;
break;
@@ -427,7 +436,9 @@ static int privcmd_mmap(struct file * fi
static const struct file_operations privcmd_file_ops = {
.unlocked_ioctl = privcmd_ioctl,
+#ifdef CONFIG_XEN_PRIVILEGED_GUEST
.mmap = privcmd_mmap,
+#endif
};
static int capabilities_read(char *page, char **start, off_t off,
--- head-2010-05-12.orig/fs/compat_ioctl.c 2010-05-12 09:02:56.000000000 +0200
+++ head-2010-05-12/fs/compat_ioctl.c 2010-05-12 09:15:02.000000000 +0200
@@ -1602,7 +1602,7 @@ static long do_ioctl_trans(int fd, unsig
return do_video_stillpicture(fd, cmd, argp);
case VIDEO_SET_SPU_PALETTE:
return do_video_set_spu_palette(fd, cmd, argp);
-#ifdef CONFIG_XEN
+#ifdef CONFIG_XEN_PRIVILEGED_GUEST
case IOCTL_PRIVCMD_MMAP_32:
case IOCTL_PRIVCMD_MMAPBATCH_32:
case IOCTL_PRIVCMD_MMAPBATCH_V2_32:
--- head-2010-05-12.orig/include/xen/firmware.h 2007-07-02 08:16:19.000000000 +0200
+++ head-2010-05-12/include/xen/firmware.h 2010-03-25 14:39:33.000000000 +0100
@@ -5,6 +5,10 @@
void copy_edd(void);
#endif
+#ifdef CONFIG_XEN_PRIVILEGED_GUEST
void copy_edid(void);
+#else
+static inline void copy_edid(void) {}
+#endif
#endif /* __XEN_FIRMWARE_H__ */
--- head-2010-05-12.orig/include/xen/gnttab.h 2009-11-06 11:10:15.000000000 +0100
+++ head-2010-05-12/include/xen/gnttab.h 2010-03-25 14:39:33.000000000 +0100
@@ -103,7 +103,11 @@ void gnttab_grant_foreign_transfer_ref(g
unsigned long pfn);
int gnttab_copy_grant_page(grant_ref_t ref, struct page **pagep);
+#if defined(CONFIG_XEN_BACKEND) || defined(CONFIG_XEN_BACKEND_MODULE)
void __gnttab_dma_map_page(struct page *page);
+#else
+#define __gnttab_dma_map_page __gnttab_dma_unmap_page
+#endif
static inline void __gnttab_dma_unmap_page(struct page *page)
{
}
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