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Maxim Levitsky 259846e4c1 KVM: x86: nSVM: disallow userspace setting of MSR_AMD64_TSC_RATIO to non default value when tsc scaling disabled

commit e910a53fb4f20aa012e46371ffb4c32c8da259b4 upstream.

If nested tsc scaling is disabled, MSR_AMD64_TSC_RATIO should
never have non default value.

Due to way nested tsc scaling support was implmented in qemu,
it would set this msr to 0 when nested tsc scaling was disabled.
Ignore that value for now, as it causes no harm.

Fixes: 5228eb96a4 ("KVM: x86: nSVM: implement nested TSC scaling")
Cc: stable@vger.kernel.org

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20220223115649.319134-1-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-03-02 11:50:51 +01:00

alpha

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arc

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arm

ARM: OMAP2+: adjust the location of put_device() call in omapdss_init_of

2022-02-23 12:06:05 +01:00

arm64

arm64: dts: meson-g12: drop BL32 region from SEI510/SEI610

2022-02-23 12:06:07 +01:00

csky