From: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Sent: Friday, May 19, 2023 3:21 AM > > Currently hv_read_tsc_page_tsc() (ab)uses the (valid) time value of > U64_MAX as an error return. This breaks the clean wrap-around of the > clock. > > Modify the function signature to return a boolean state and provide > another u64 pointer to store the actual time on success. This obviates > the need to steal one time value and restores the full counter width. > > Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> > --- > arch/x86/include/asm/vdso/gettimeofday.h | 10 ++++++---- > arch/x86/kvm/x86.c | 7 +++---- > drivers/clocksource/hyperv_timer.c | 16 +++++++++++----- > include/clocksource/hyperv_timer.h | 24 +++++++++--------------- > 4 files changed, 29 insertions(+), 28 deletions(-) > Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx>
