Peter Zijlstra 9397fa2ea3 clocksource: hyper-v: Adjust hv_read_tsc_page_tsc() to avoid special casing U64_MAX ... 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@infradead.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Michael Kelley <mikelley@microsoft.com> # Hyper-V Link: https://lore.kernel.org/r/20230519102715.775630881@infradead.org		2023-06-05 21:11:07 +02:00
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clocksource.h	clocksource/drivers/hyper-v: Re-enable VDSO_CLOCKMODE_HVCLOCK on X86	2021-05-14 14:55:13 +02:00
gettimeofday.h	clocksource: hyper-v: Adjust hv_read_tsc_page_tsc() to avoid special casing U64_MAX	2023-06-05 21:11:07 +02:00
processor.h	x86/vdso: Fix -Wmissing-prototypes warnings	2023-02-07 18:23:17 +01:00
vsyscall.h	x86/vdso: Use generic VDSO clock mode storage	2020-02-17 14:40:23 +01:00