Re: [PATCH 2/2] arm64: VDSO: fix coarse clock monotonicity regression

2015-08-12 Thread John Stultz
On Fri, Aug 7, 2015 at 7:03 PM, Nathan Lynch wrote: > Since 906c55579a63 ("timekeeping: Copy the shadow-timekeeper over the > real timekeeper last") it has become possible on arm64 to: > > - Obtain a CLOCK_MONOTONIC_COARSE or CLOCK_REALTIME_COARSE timestamp > via syscall. > - Subsequently obtain

Re: [PATCH 2/2] arm64: VDSO: fix coarse clock monotonicity regression

2015-08-10 Thread Catalin Marinas
On Mon, Aug 10, 2015 at 10:22:53AM +0100, Will Deacon wrote: > On Sat, Aug 08, 2015 at 03:03:23AM +0100, Nathan Lynch wrote: > > Since 906c55579a63 ("timekeeping: Copy the shadow-timekeeper over the > > real timekeeper last") it has become possible on arm64 to: > > > > - Obtain a CLOCK_MONOTONIC_C

Re: [PATCH 2/2] arm64: VDSO: fix coarse clock monotonicity regression

2015-08-10 Thread Will Deacon
Hi Nathan, On Sat, Aug 08, 2015 at 03:03:23AM +0100, Nathan Lynch wrote: > Since 906c55579a63 ("timekeeping: Copy the shadow-timekeeper over the > real timekeeper last") it has become possible on arm64 to: > > - Obtain a CLOCK_MONOTONIC_COARSE or CLOCK_REALTIME_COARSE timestamp > via syscall. >

[PATCH 2/2] arm64: VDSO: fix coarse clock monotonicity regression

2015-08-07 Thread Nathan Lynch
Since 906c55579a63 ("timekeeping: Copy the shadow-timekeeper over the real timekeeper last") it has become possible on arm64 to: - Obtain a CLOCK_MONOTONIC_COARSE or CLOCK_REALTIME_COARSE timestamp via syscall. - Subsequently obtain a timestamp for the same clock ID via VDSO which predates the