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Patch by Jan Klötzke:

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* The IO permission bitmap is always checked for virtual 8086 mode tasks.
  Make sure it is invalid.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25605 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2008-05-22 11:44:42 +00:00
parent b8caf749bf
commit a71e7c8d43
1 changed files with 2 additions and 0 deletions
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2
src/system/kernel/arch/x86/arch_cpu.c
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@ -229,6 +229,7 @@ init_double_fault(int cpuNum)
tss->fs = KERNEL_DATA_SEG;
tss->gs = KERNEL_DATA_SEG;
tss->ldt_seg_selector = 0;
tss->io_map_base = sizeof(struct tss);
// add TSS descriptor for this new TSS
set_tss_descriptor(&gGDT[DOUBLE_FAULT_TSS_BASE_SEGMENT + cpuNum],
@ -501,6 +502,7 @@ arch_cpu_init_post_vm(kernel_args *args)
// structure
memset(&gCPU[i].arch.tss, 0, sizeof(struct tss));
gCPU[i].arch.tss.ss0 = KERNEL_DATA_SEG;
gCPU[i].arch.tss.io_map_base = sizeof(struct tss);
// add TSS descriptor for this new TSS
set_tss_descriptor(&gGDT[TSS_BASE_SEGMENT + i],