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authorArnd Bergmann <arnd@arndb.de>2018-04-27 22:13:23 +0200
committerThomas Gleixner <tglx@linutronix.de>2018-05-19 14:03:14 +0200
commite27c49291a7fe9dc415c9fcab5bd781ec82dfe04 (patch)
tree008966041f82225a331bbb55bed874e82f367fcd /arch/x86/xen/time.c
parent06aa376903b6e8c8741395a4702d78d47c7c27c6 (diff)
x86: Convert x86_platform_ops to timespec64
The x86 platform operations are fairly isolated, so it's easy to change them from using timespec to timespec64. It has been checked that all the users and callers are safe, and there is only one critical function that is broken beyond 2106: pvclock_read_wallclock() uses a 32-bit number of seconds since the epoch to communicate the boot time between host and guest in a virtual environment. This will work until 2106, but fixing this is outside the scope of this change, Add a comment at least. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Acked-by: Radim Krčmář <rkrcmar@redhat.com> Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Juergen Gross <jgross@suse.com> Cc: jailhouse-dev@googlegroups.com Cc: Borislav Petkov <bp@suse.de> Cc: kvm@vger.kernel.org Cc: y2038@lists.linaro.org Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com> Cc: xen-devel@lists.xenproject.org Cc: John Stultz <john.stultz@linaro.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Joao Martins <joao.m.martins@oracle.com> Link: https://lkml.kernel.org/r/20180427201435.3194219-1-arnd@arndb.de
Diffstat (limited to 'arch/x86/xen/time.c')
-rw-r--r--arch/x86/xen/time.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index 29163c43ebbd..e0f1bcf01d63 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -57,7 +57,7 @@ static u64 xen_clocksource_get_cycles(struct clocksource *cs)
return xen_clocksource_read();
}
-static void xen_read_wallclock(struct timespec *ts)
+static void xen_read_wallclock(struct timespec64 *ts)
{
struct shared_info *s = HYPERVISOR_shared_info;
struct pvclock_wall_clock *wall_clock = &(s->wc);
@@ -68,12 +68,12 @@ static void xen_read_wallclock(struct timespec *ts)
put_cpu_var(xen_vcpu);
}
-static void xen_get_wallclock(struct timespec *now)
+static void xen_get_wallclock(struct timespec64 *now)
{
xen_read_wallclock(now);
}
-static int xen_set_wallclock(const struct timespec *now)
+static int xen_set_wallclock(const struct timespec64 *now)
{
return -ENODEV;
}
@@ -461,7 +461,7 @@ static void __init xen_time_init(void)
{
struct pvclock_vcpu_time_info *pvti;
int cpu = smp_processor_id();
- struct timespec tp;
+ struct timespec64 tp;
/* As Dom0 is never moved, no penalty on using TSC there */
if (xen_initial_domain())
@@ -479,7 +479,7 @@ static void __init xen_time_init(void)
/* Set initial system time with full resolution */
xen_read_wallclock(&tp);
- do_settimeofday(&tp);
+ do_settimeofday64(&tp);
setup_force_cpu_cap(X86_FEATURE_TSC);