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[PATCH] x86_64: fix bound check IDT gate

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Other than apparently commonly assumed, the bound instruction does not
require the corresponding IDT entry to have DPL 3.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jan Beulich 2006-01-11 22:42:08 +01:00 committed by Linus Torvalds
parent 6e0c47ede7
commit 0a52158821
1 changed files with 2 additions and 2 deletions
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4
arch/x86_64/kernel/traps.c
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@ -881,8 +881,8 @@ void __init trap_init(void)
set_intr_gate_ist(1,&debug,DEBUG_STACK); set_intr_gate_ist(1,&debug,DEBUG_STACK);
set_intr_gate_ist(2,&nmi,NMI_STACK); set_intr_gate_ist(2,&nmi,NMI_STACK);
set_system_gate(3,&int3); set_system_gate(3,&int3);
set_system_gate(4,&overflow); /* int4-5 can be called from all */ set_system_gate(4,&overflow); /* int4 can be called from all */
set_system_gate(5,&bounds); set_intr_gate(5,&bounds);
set_intr_gate(6,&invalid_op); set_intr_gate(6,&invalid_op);
set_intr_gate(7,&device_not_available); set_intr_gate(7,&device_not_available);
set_intr_gate_ist(8,&double_fault, DOUBLEFAULT_STACK); set_intr_gate_ist(8,&double_fault, DOUBLEFAULT_STACK);