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hw_x86_64: Reserve space for IDT on mode transition pages

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On exception, the CPU first checks the IDT in order to find the
associated ISR. The IDT must therefore be placed in the mode transition
pages to make them available for non-core threads.
This commit is contained in:
Reto Buerki 2015-02-26 11:48:20 +01:00 committed by Christian Helmuth
parent d8a10448bb
commit 9c8109c276
1 changed files with 10 additions and 0 deletions
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10
repos/base-hw/src/core/spec/x86_64/mode_transition.s
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@ -237,6 +237,16 @@
iretq
/************************************************
** Space for Interrupt Descriptor Table (IDT) **
** See Intel SDM Vol. 3A, section 6.10 **
************************************************/
.global _mt_idt
.align 8
_mt_idt:
.space 1 << MIN_PAGE_SIZE_LOG2
/* end of the mode transition code */
.global _mt_end
_mt_end: