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| author | Ivan Shcherbakov <ivan@sysprogs.com> | 2022-02-22 21:18:00 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-03-15 11:26:20 +0100 |
| commit | 5ad93fd351b303172732f3cea953c67fa7fa336e (patch) | |
| tree | e60e4c024f576de561f80f361437cce79d514c7c /scripts/kvm | |
| parent | e561890841e8b1ab49a5610dd811ab732904fb1f (diff) | |
whpx: Fixed incorrect CR8/TPR synchronization
This fixes the following error triggered when stopping and resuming a 64-bit
Linux kernel via gdb:
qemu-system-x86_64.exe: WHPX: Failed to set virtual processor context, hr=c0350005
The previous logic for synchronizing the values did not take into account
that the lower 4 bits of the CR8 register, containing the priority level,
mapped to bits 7:4 of the APIC.TPR register (see section 10.8.6.1 of
Volume 3 of Intel 64 and IA-32 Architectures Software Developer's Manual).
The caused WHvSetVirtualProcessorRegisters() to fail with an error,
effectively preventing GDB from changing the guest context.
Signed-off-by: Ivan Shcherbakov <ivan@sysprogs.com>
Message-Id: <010b01d82874$bb4ef160$31ecd420$@sysprogs.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'scripts/kvm')
0 files changed, 0 insertions, 0 deletions