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x86/kvmclock: Move this_cpu_pvti into kvmclock.h

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commit ad9af930680bb396c87582edc172b3a7cf2a3fbf upstream.

There're other modules might use hv_clock_per_cpu variable like ptp_kvm,
so move it into kvmclock.h and export the symbol to make it visiable to
other modules.

Signed-off-by: Zelin Deng <zelin.deng@linux.alibaba.com>
Cc: <stable@vger.kernel.org>
Message-Id: <1632892429-101194-2-git-send-email-zelin.deng@linux.alibaba.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zelin Deng 2021-09-29 13:13:48 +08:00 committed by Greg Kroah-Hartman
parent 57de2dcb18
commit 782122ae7d
2 changed files with 16 additions and 11 deletions
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14
arch/x86/include/asm/kvmclock.h
View File

@ -2,6 +2,20 @@
#ifndef _ASM_X86_KVM_CLOCK_H
#define _ASM_X86_KVM_CLOCK_H
#include <linux/percpu.h>
extern struct clocksource kvm_clock;
DECLARE_PER_CPU(struct pvclock_vsyscall_time_info *, hv_clock_per_cpu);
static inline struct pvclock_vcpu_time_info *this_cpu_pvti(void)
{
return &this_cpu_read(hv_clock_per_cpu)->pvti;
}
static inline struct pvclock_vsyscall_time_info *this_cpu_hvclock(void)
{
return this_cpu_read(hv_clock_per_cpu);
}
#endif /* _ASM_X86_KVM_CLOCK_H */

13
arch/x86/kernel/kvmclock.c
View File

@ -50,18 +50,9 @@ early_param("no-kvmclock-vsyscall", parse_no_kvmclock_vsyscall);
static struct pvclock_vsyscall_time_info
hv_clock_boot[HVC_BOOT_ARRAY_SIZE] __bss_decrypted __aligned(PAGE_SIZE);
static struct pvclock_wall_clock wall_clock __bss_decrypted;
static DEFINE_PER_CPU(struct pvclock_vsyscall_time_info *, hv_clock_per_cpu);
static struct pvclock_vsyscall_time_info *hvclock_mem;
static inline struct pvclock_vcpu_time_info *this_cpu_pvti(void)
{
return &this_cpu_read(hv_clock_per_cpu)->pvti;
}
static inline struct pvclock_vsyscall_time_info *this_cpu_hvclock(void)
{
return this_cpu_read(hv_clock_per_cpu);
}
DEFINE_PER_CPU(struct pvclock_vsyscall_time_info *, hv_clock_per_cpu);
EXPORT_PER_CPU_SYMBOL_GPL(hv_clock_per_cpu);
/*
* The wallclock is the time of day when we booted. Since then, some time may