Commit 5a2bafca authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

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: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200528145522.898591501@linutronix.de
parent 94438af4

arch/x86/kernel/idt.c

+2 −1
Original line number Diff line number Diff line
@@ -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,

};