KVM: x86: Make use of kvm_read_cr*_bits() when testing bits

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[ Upstream commit 74cdc83691 ]

Make use of the kvm_read_cr{0,4}_bits() helper functions when we only
want to know the state of certain bits instead of the whole register.

This not only makes the intent cleaner, it also avoids a potential
VMREAD in case the tested bits aren't guest owned.

Signed-off-by: Mathias Krause <minipli@grsecurity.net>
Link: https://lore.kernel.org/r/20230322013731.102955-5-minipli@grsecurity.net
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Mathias Krause <minipli@grsecurity.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Mathias Krause 2023-05-08 17:46:00 +02:00 • committed by Greg Kroah-Hartman

parent 956777b253

commit 27ec4cbc1d

2 changed files with 4 additions and 4 deletions

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4

arch/x86/kvm/pmu.c

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4

arch/x86/kvm/vmx/vmx.c

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