KVM: x86: Use gfn_to_pfn_cache for pv_time

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Add a new kvm_setup_guest_pvclock() which parallels the existing
kvm_setup_pvclock_page(). The latter will be removed once we convert
all users to the gfn_to_pfn_cache version.

Using the new cache, we can potentially let kvm_set_guest_paused() set
the PVCLOCK_GUEST_STOPPED bit directly rather than having to delegate
to the vCPU via KVM_REQ_CLOCK_UPDATE. But not yet.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220303154127.202856-5-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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David Woodhouse 2022-03-03 15:41:14 +00:00 • committed by Paolo Bonzini

parent a795cd43c5

commit 916d3608df

2 changed files with 64 additions and 15 deletions

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arch/x86/include/asm/kvm_host.h

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76

arch/x86/kvm/x86.c

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