From 2b4558ec338adde1b9735128bb8d2f81db303a93 Mon Sep 17 00:00:00 2001 From: Avadhut Naik Date: Wed, 23 Oct 2024 12:25:28 -0500 Subject: [PATCH 01/38] accel/kvm: check for KVM_CAP_READONLY_MEM on VM RH-Author: avnaik1 RH-MergeRequest: 276: accel/kvm: check for KVM_CAP_READONLY_MEM on VM RH-Jira: RHEL-58928 RH-Acked-by: Paolo Bonzini RH-Acked-by: Vitaly Kuznetsov RH-Commit: [1/1] 1d392a9e47e68bb71dc44635c494d161585a885c (avnaik1/avnaik-qemu-kvm-fork) JIRA: https://issues.redhat.com/browse/RHEL-58928 commit 64e0e63ea16aa0122dc0c41a0679da0ae4616208 Author: Tom Dohrmann Date: Tue Sep 3 06:29:53 2024 +0000 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@google.com/ [2] https://patchwork.kernel.org/project/kvm/patch/20240902144219.3716974-1-erbse.13@gmx.de/ Cc: Paolo Bonzini Signed-off-by: Tom Dohrmann Link: https://lore.kernel.org/r/20240903062953.3926498-1-erbse.13@gmx.de Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini Signed-off-by: Avadhut Naik --- 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); -- 2.39.3