From 92a5199b29f6519aa5f774f4b96dc41954f641d1 Mon Sep 17 00:00:00 2001 From: Tom Lendacky Date: Tue, 26 Jan 2021 11:36:47 -0600 Subject: sev/i386: Don't allow a system reset under an SEV-ES guest An SEV-ES guest does not allow register state to be altered once it has been measured. When an SEV-ES guest issues a reboot command, Qemu will reset the vCPU state and resume the guest. This will cause failures under SEV-ES. Prevent that from occuring by introducing an arch-specific callback that returns a boolean indicating whether vCPUs are resettable. Cc: Peter Maydell Cc: Aurelien Jarno Cc: Jiaxun Yang Cc: Aleksandar Rikalo Cc: David Gibson Cc: David Hildenbrand Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Tom Lendacky Reviewed-by: Venu Busireddy Message-Id: <1ac39c441b9a3e970e9556e1cc29d0a0814de6fd.1611682609.git.thomas.lendacky@amd.com> Signed-off-by: Paolo Bonzini --- target/mips/kvm.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'target/mips/kvm.c') diff --git a/target/mips/kvm.c b/target/mips/kvm.c index 84fb10ea35..123ec1be7e 100644 --- a/target/mips/kvm.c +++ b/target/mips/kvm.c @@ -1290,3 +1290,8 @@ int mips_kvm_type(MachineState *machine, const char *vm_type) return -1; } + +bool kvm_arch_cpu_check_are_resettable(void) +{ + return true; +} -- cgit v1.2.3