I haven't heard anything about this patch for a while. https://patchew.org/QEMU/20240903062953.3926498-1-erbse.13@xxxxxx/ From 5c1ad1ff44438402ec824a224ac4659c8044ec7e Mon Sep 17 00:00:00 2001 From: Tom Dohrmann <erbse.13@xxxxxx> Date: Tue, 3 Sep 2024 06:25:04 +0000 Subject: [PATCH] accel/kvm: check for KVM_CAP_READONLY_MEM on VM 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@xxxxxxxxxx/ [2] https://patchwork.kernel.org/project/kvm/patch/20240902144219.3716974-1-erbse.13@xxxxxx/ Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> Signed-off-by: Tom Dohrmann <erbse.13@xxxxxx> --- accel/kvm/kvm-all.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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); -- 2.34.1
