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replace gate_struct64 with unified gate_struct

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As described in this:
https://lore.kernel.org/lkml/20170828064957.861974317@linutronix.de/
mail from the lkml.
And changed within this commit:
64b163fab6 (diff-35bcd00365a749ba6cfa246a7dc86a68)

The gate_struct was unified for 32 and 64bit machines.
Replaced gate_struct64 definition with that of gate_struct.
This commit is contained in:
Sebastian Fricke 2020-04-01 07:21:50 +02:00
parent 73fd0ad5e1
commit 1bf6ed1ec9
1 changed files with 9 additions and 21 deletions
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30
Interrupts/linux-interrupts-1.md
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@ -232,33 +232,21 @@ The `IST` or `Interrupt Stack Table` is a new mechanism in the `x86_64`. It is u
The `Interrupt Descriptor Table` represented by the array of the `gate_desc` structures:
```C
extern gate_desc idt_table[];
gate_desc idt_table[IDT_ENTRIES] __page_aligned_bss;
```
where `gate_desc` is:
where `gate_struct` is defined as:
```C
struct gate_struct {
u16 offset_low;
u16 segment;
struct idt_bits bits;
u16 offset_middle;
#ifdef CONFIG_X86_64
...
...
...
typedef struct gate_struct64 gate_desc;
...
...
...
u32 offset_high;
u32 reserved;
#endif
```
and `gate_struct64` defined as:
```C
struct gate_struct64 {
u16 offset_low;
u16 segment;
unsigned ist : 3, zero0 : 5, type : 5, dpl : 2, p : 1;
u16 offset_middle;
u32 offset_high;
u32 zero1;
} __attribute__((packed));
```