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| author | Pavel Tatashin <pasha.tatashin@oracle.com> | 2018-07-19 16:55:31 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-07-20 00:02:39 +0200 |
| commit | 7b25b9cb0dad8395b5cf5a02196d0e88ccda67d5 (patch) | |
| tree | fad684ea5a4888867df6c2a650dbe49a79f773f4 /arch/x86/xen/time.c | |
| parent | fe9af81e524e8a86bdd59c0cc0d9e2b0ccaf840f (diff) | |
| download | linux-stable-7b25b9cb0dad8395b5cf5a02196d0e88ccda67d5.tar.gz linux-stable-7b25b9cb0dad8395b5cf5a02196d0e88ccda67d5.tar.bz2 linux-stable-7b25b9cb0dad8395b5cf5a02196d0e88ccda67d5.zip | |
x86/xen/time: Initialize pv xen time in init_hypervisor_platform()
In every hypervisor except for xen pv time ops are initialized in
init_hypervisor_platform().
Xen PV domains initialize time ops in x86_init.paging.pagetable_init(),
by calling xen_setup_shared_info() which is a poor design, as time is
needed prior to memory allocator.
xen_setup_shared_info() is called from two places: during boot, and
after suspend. Split the content of xen_setup_shared_info() into
three places:
1. add the clock relavent data into new xen pv init_platform vector, and
set clock ops in there.
2. move xen_setup_vcpu_info_placement() to new xen_pv_guest_late_init()
call.
3. Re-initializing parts of shared info copy to xen_pv_post_suspend() to
be symmetric to xen_pv_pre_suspend
Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: steven.sistare@oracle.com
Cc: daniel.m.jordan@oracle.com
Cc: linux@armlinux.org.uk
Cc: schwidefsky@de.ibm.com
Cc: heiko.carstens@de.ibm.com
Cc: john.stultz@linaro.org
Cc: sboyd@codeaurora.org
Cc: hpa@zytor.com
Cc: douly.fnst@cn.fujitsu.com
Cc: peterz@infradead.org
Cc: prarit@redhat.com
Cc: feng.tang@intel.com
Cc: pmladek@suse.com
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: linux-s390@vger.kernel.org
Cc: boris.ostrovsky@oracle.com
Cc: jgross@suse.com
Cc: pbonzini@redhat.com
Link: https://lkml.kernel.org/r/20180719205545.16512-13-pasha.tatashin@oracle.com
Diffstat (limited to 'arch/x86/xen/time.c')
| -rw-r--r-- | arch/x86/xen/time.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index e0f1bcf01d63..53bb7a8d10b5 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -40,7 +40,7 @@ static unsigned long xen_tsc_khz(void) return pvclock_tsc_khz(info); } -u64 xen_clocksource_read(void) +static u64 xen_clocksource_read(void) { struct pvclock_vcpu_time_info *src; u64 ret; @@ -503,7 +503,7 @@ static void __init xen_time_init(void) pvclock_gtod_register_notifier(&xen_pvclock_gtod_notifier); } -void __ref xen_init_time_ops(void) +void __init xen_init_time_ops(void) { pv_time_ops = xen_time_ops; @@ -542,8 +542,7 @@ void __init xen_hvm_init_time_ops(void) return; if (!xen_feature(XENFEAT_hvm_safe_pvclock)) { - printk(KERN_INFO "Xen doesn't support pvclock on HVM," - "disable pv timer\n"); + pr_info("Xen doesn't support pvclock on HVM, disable pv timer"); return; } |