On 18/04/2024 20:34, David Woodhouse wrote:
From: David Woodhouse <[email protected]>This was introduced in commit 0061d53daf26 ("KVM: x86: limit difference between kvmclock updates") to reduce cross-vCPU differences which arose because the KVM clock was based on CLOCK_MONOTONIC and thus subject to NTP frequency corrections. However, commit 53fafdbb8b21 ("KVM: x86: switch KVMCLOCK base to monotonic raw clock") switched to using CLOCK_MONOTONIC_RAW as the basis for the KVM clock, avoiding the NTP frequency skew altogether. So remove KVM_REQ_GLOBAL_CLOCK_UPDATE. In kvm_write_system_time(), all that's needed is a single KVM_REQ_CLOCK_UPDATE for the vCPU whose KVM clock is being configured. Signed-off-by: David Woodhouse <[email protected]> --- arch/x86/include/asm/kvm_host.h | 2 +- arch/x86/kvm/x86.c | 57 ++------------------------------- 2 files changed, 4 insertions(+), 55 deletions(-)
Reviewed-by: Paul Durrant <[email protected]>
