diff mbox series

accel/kvm: check for KVM_CAP_READONLY_MEM on VM

Message ID 20240903062953.3926498-1-erbse.13@gmx.de (mailing list archive)
State New, archived
Headers show
Series accel/kvm: check for KVM_CAP_READONLY_MEM on VM | expand

Commit Message

Tom Dohrmann Sept. 3, 2024, 6:29 a.m. UTC 
KVM_CAP_READONLY_MEM used to be a global capability, but with the
introduction of AMD SEV-SNP confidential VMs, this extension is not
always available on all VM types [1,2].

Query the extension on the VM level instead of on the KVM level.

[1] https://patchwork.kernel.org/project/kvm/patch/20240809190319.1710470-2-seanjc@google.com/
[2] https://patchwork.kernel.org/project/kvm/patch/20240902144219.3716974-1-erbse.13@gmx.de/

Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Tom Dohrmann <erbse.13@gmx.de>
---
 accel/kvm/kvm-all.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--
2.34.1

Comments

Paolo Bonzini Oct. 11, 2024, 8:51 a.m. UTC | #1 
Queued, thanks.  (Sorry about the message I have just sent with your
patch, I used the wrong script!)

Paolo
diff mbox series

Patch

diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index 75d11a07b2..acc23092e7 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -2603,7 +2603,7 @@  static int kvm_init(MachineState *ms)
     }

     kvm_readonly_mem_allowed =
-        (kvm_check_extension(s, KVM_CAP_READONLY_MEM) > 0);
+        (kvm_vm_check_extension(s, KVM_CAP_READONLY_MEM) > 0);

     kvm_resamplefds_allowed =
         (kvm_check_extension(s, KVM_CAP_IRQFD_RESAMPLE) > 0);