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arch-x86: Propogate the unusable bit to KVM.

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The unusable bit is now used by gem5. Pass that bit through to KVM
instead of a dummy value 0.

Change-Id: I59912b478a3de95684fb0cc65ff5703d201df8cb
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/57050
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
This commit is contained in:
Gabe Black
2022-02-22 23:44:23 -08:00
parent 0e65df2cf5
commit 70ee16a387
1 changed files with 1 additions and 6 deletions
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7
src/arch/x86/kvm/x86_cpu.cc
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@@ -741,12 +741,7 @@ setKvmSegmentReg(ThreadContext *tc, struct kvm_segment &kvm_seg,
kvm_seg.l = attr.longMode;
kvm_seg.g = attr.granularity;
kvm_seg.avl = attr.avl;
// A segment is normally unusable when the selector is zero. There
// is a attr.unusable flag in gem5, but it seems unused. qemu
// seems to set this to 0 all the time, so we just do the same and
// hope for the best.
kvm_seg.unusable = 0;
kvm_seg.unusable = attr.unusable;
}
static inline void