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| author | Juergen Gross <jgross@suse.com> | 2021-03-11 15:23:09 +0100 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2021-03-11 16:17:52 +0100 |
| commit | a0e2bf7cb7006b5a58ee81f4da4fe575875f2781 (patch) | |
| tree | 74da4d815e17d058066f7d615e0b6c462b155f71 /arch/x86/xen | |
| parent | 6ea312d95e0226b306bb4b8ee3a0727d880378cb (diff) | |
| download | linux-stable-a0e2bf7cb7006b5a58ee81f4da4fe575875f2781.tar.gz linux-stable-a0e2bf7cb7006b5a58ee81f4da4fe575875f2781.tar.bz2 linux-stable-a0e2bf7cb7006b5a58ee81f4da4fe575875f2781.zip | |
x86/paravirt: Switch time pvops functions to use static_call()
The time pvops functions are the only ones left which might be
used in 32-bit mode and which return a 64-bit value.
Switch them to use the static_call() mechanism instead of pvops, as
this allows quite some simplification of the pvops implementation.
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210311142319.4723-5-jgross@suse.com
Diffstat (limited to 'arch/x86/xen')
| -rw-r--r-- | arch/x86/xen/time.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index 91f5b330dcc6..d9c945ee1100 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -379,11 +379,6 @@ void xen_timer_resume(void) } } -static const struct pv_time_ops xen_time_ops __initconst = { - .sched_clock = xen_sched_clock, - .steal_clock = xen_steal_clock, -}; - static struct pvclock_vsyscall_time_info *xen_clock __read_mostly; static u64 xen_clock_value_saved; @@ -525,17 +520,24 @@ static void __init xen_time_init(void) pvclock_gtod_register_notifier(&xen_pvclock_gtod_notifier); } -void __init xen_init_time_ops(void) +static void __init xen_init_time_common(void) { xen_sched_clock_offset = xen_clocksource_read(); - pv_ops.time = xen_time_ops; + static_call_update(pv_steal_clock, xen_steal_clock); + paravirt_set_sched_clock(xen_sched_clock); + + x86_platform.calibrate_tsc = xen_tsc_khz; + x86_platform.get_wallclock = xen_get_wallclock; +} + +void __init xen_init_time_ops(void) +{ + xen_init_time_common(); x86_init.timers.timer_init = xen_time_init; x86_init.timers.setup_percpu_clockev = x86_init_noop; x86_cpuinit.setup_percpu_clockev = x86_init_noop; - x86_platform.calibrate_tsc = xen_tsc_khz; - x86_platform.get_wallclock = xen_get_wallclock; /* Dom0 uses the native method to set the hardware RTC. */ if (!xen_initial_domain()) x86_platform.set_wallclock = xen_set_wallclock; @@ -569,13 +571,11 @@ void __init xen_hvm_init_time_ops(void) return; } - xen_sched_clock_offset = xen_clocksource_read(); - pv_ops.time = xen_time_ops; + xen_init_time_common(); + x86_init.timers.setup_percpu_clockev = xen_time_init; x86_cpuinit.setup_percpu_clockev = xen_hvm_setup_cpu_clockevents; - x86_platform.calibrate_tsc = xen_tsc_khz; - x86_platform.get_wallclock = xen_get_wallclock; x86_platform.set_wallclock = xen_set_wallclock; } #endif |