KVM: x86: Remove separate "bit" defines for page fault error code masks

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Open code the bit number directly in the PFERR_* masks and drop the
intermediate PFERR_*_BIT defines, as having to bounce through two macros
just to see which flag corresponds to which bit is quite annoying, as is
having to define two macros just to add recognition of a new flag.

Use ternary operator to derive the bit in permission_fault(), the one
function that actually needs the bit number as part of clever shifting
to avoid conditional branches.  Generally the compiler is able to turn
it into a conditional move, and if not it's not really a big deal.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240228024147.41573-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2024-02-27 18:41:33 -08:00 • committed by Paolo Bonzini

parent d0bf8e6e44

commit 63b6206e2f

2 changed files with 12 additions and 25 deletions

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32

arch/x86/include/asm/kvm_host.h

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5

arch/x86/kvm/mmu.h

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