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| author | Thomas Gleixner <tglx@linutronix.de> | 2020-05-28 17:53:18 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-06-11 16:15:25 +0300 |
| commit | 5a2bafca1b0675a126143eea3610143130347783 (patch) | |
| tree | 3af6afa5a8d1dab0ebc197dc3ca8bb8ae75656c4 /arch/x86/kernel/idt.c | |
| parent | 94438af40d06c110988fc9e30baf801f38b1491a (diff) | |
| download | linux-5a2bafca1b0675a126143eea3610143130347783.tar.xz | |
x86/idt: Use proper constants for table size
Use the actual struct size to calculate the IDT table size instead of
hardcoded values.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200528145522.898591501@linutronix.de
Diffstat (limited to 'arch/x86/kernel/idt.c')
| -rw-r--r-- | arch/x86/kernel/idt.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/idt.c b/arch/x86/kernel/idt.c index 5ef82fcf333d..b6e1a87f0822 100644 --- a/arch/x86/kernel/idt.c +++ b/arch/x86/kernel/idt.c @@ -51,6 +51,7 @@ struct idt_data { #define TSKG(_vector, _gdt) \ G(_vector, NULL, DEFAULT_STACK, GATE_TASK, DPL0, _gdt << 3) +#define IDT_TABLE_SIZE (IDT_ENTRIES * sizeof(gate_desc)) static bool idt_setup_done __initdata; @@ -168,7 +169,7 @@ static const __initconst struct idt_data early_pf_idts[] = { gate_desc idt_table[IDT_ENTRIES] __page_aligned_bss; struct desc_ptr idt_descr __ro_after_init = { - .size = (IDT_ENTRIES * 2 * sizeof(unsigned long)) - 1, + .size = IDT_TABLE_SIZE - 1, .address = (unsigned long) idt_table, }; |