KVM: arm64: pvtime: Fix stolen time accounting across migration

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When updating the stolen time we should always read the current
stolen time from the user provided memory, not from a kernel
cache. If we use a cache then we'll end up resetting stolen time
to zero on the first update after migration.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200804170604.42662-5-drjones@redhat.com

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Andrew Jones 2020-08-04 19:06:02 +02:00 • committed by Marc Zyngier

parent 4d2d4ce001

commit 53f985584e

3 changed files with 29 additions and 15 deletions

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arch/arm64/include/asm/kvm_host.h

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arch/arm64/kvm/pvtime.c

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include/linux/kvm_host.h

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