Paolo Bonzini 3ec5ad4008 target/i386: kvm: do not access uninitialized variable on older kernels ... KVM support for AMX includes a new system attribute, KVM_X86_XCOMP_GUEST_SUPP. Commit 19db68ca68 ("x86: Grant AMX permission for guest", 2022-03-15) however did not fully consider the behavior on older kernels. First, it warns too aggressively. Second, it invokes the KVM_GET_DEVICE_ATTR ioctl unconditionally and then uses the "bitmask" variable, which remains uninitialized if the ioctl fails. Third, kvm_ioctl returns -errno rather than -1 on errors. While at it, explain why the ioctl is needed and KVM_GET_SUPPORTED_CPUID is not enough. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2022-03-20 20:38:52 +01:00
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hyperv-proto.h	i386: Implement pseudo 'hv-avic' ('hv-apicv') enlightenment	2021-10-01 19:04:45 +02:00
hyperv-stub.c	…
hyperv.c	…
hyperv.h	…
kvm-cpu.c	x86: Grant AMX permission for guest	2022-03-15 11:50:50 +01:00
kvm-cpu.h	i386: split cpu accelerators from cpu.c, using AccelCPUClass	2021-05-10 15:41:49 -04:00
kvm-stub.c	i386: expand Hyper-V features during CPU feature expansion time	2021-07-13 09:13:29 -04:00
kvm.c	target/i386: kvm: do not access uninitialized variable on older kernels	2022-03-20 20:38:52 +01:00
kvm_i386.h	x86: Grant AMX permission for guest	2022-03-15 11:50:50 +01:00
meson.build	target/i386/kvm: Restrict SEV stubs to x86 architecture	2021-10-13 10:47:49 +02:00
sev-stub.c	target/i386/sev: Declare system-specific functions in 'sev.h'	2021-10-13 10:47:49 +02:00
trace-events	docs: fix references to docs/devel/tracing.rst	2021-06-02 06:51:09 +02:00
trace.h	…