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| author | Xiaoyao Li <xiaoyao.li@intel.com> | 2025-05-08 10:59:48 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2025-05-28 19:35:54 +0200 |
| commit | b4b7fb5a773e1d2215c2aaa99789eca51914b78f (patch) | |
| tree | 365716e969e8dcd815c1429071a1fda132e963dd | |
| parent | 62a1a8b89d90cd3fbee0e6d38e6a4c0d833e978a (diff) | |
| download | qemu-b4b7fb5a773e1d2215c2aaa99789eca51914b78f.zip qemu-b4b7fb5a773e1d2215c2aaa99789eca51914b78f.tar.gz qemu-b4b7fb5a773e1d2215c2aaa99789eca51914b78f.tar.bz2 | |
cpu: Don't set vcpu_dirty when guest_state_protected
QEMU calls kvm_arch_put_registers() when vcpu_dirty is true in
kvm_vcpu_exec(). However, for confidential guest, like TDX, putting
registers is disallowed due to guest state is protected.
Only set vcpu_dirty to true with guest state is not protected when
creating the vcpu.
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250508150002.689633-43-xiaoyao.li@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | accel/kvm/kvm-all.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 71e6060..51526d3 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -471,7 +471,9 @@ int kvm_create_vcpu(CPUState *cpu) cpu->kvm_fd = kvm_fd; cpu->kvm_state = s; - cpu->vcpu_dirty = true; + if (!s->guest_state_protected) { + cpu->vcpu_dirty = true; + } cpu->dirty_pages = 0; cpu->throttle_us_per_full = 0; |