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Shutemov" <kirill.shutemov@linux.intel.com>, Paolo Bonzini <pbonzini@redhat.com>, Sean Christopherson <seanjc@google.com>, Juergen Gross <jgross@suse.com>, "K. Y. Srinivasan" <kys@microsoft.com>, Haiyang Zhang <haiyangz@microsoft.com>, Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>, Ajay Kaher <ajay.kaher@broadcom.com>, Jan Kiszka <jan.kiszka@siemens.com>, Andy Lutomirski <luto@kernel.org>, Peter Zijlstra <peterz@infradead.org>, Daniel Lezcano <daniel.lezcano@linaro.org>, John Stultz <jstultz@google.com> Cc: linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev, kvm@vger.kernel.org, virtualization@lists.linux.dev, linux-hyperv@vger.kernel.org, xen-devel@lists.xenproject.org, Tom Lendacky <thomas.lendacky@amd.com>, Nikunj A Dadhania <nikunj@amd.com> Content-Type: text/plain; charset="UTF-8" |
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x86: Try to wrangle PV clocks vs. TSC
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diff --git a/arch/x86/kernel/pvclock.c b/arch/x86/kernel/pvclock.c index b3f81379c2fc..a51adce67f92 100644 --- a/arch/x86/kernel/pvclock.c +++ b/arch/x86/kernel/pvclock.c @@ -16,10 +16,10 @@ #include <asm/pvclock.h> #include <asm/vgtod.h> -static u8 valid_flags __read_mostly = 0; -static struct pvclock_vsyscall_time_info *pvti_cpu0_va __read_mostly; +static u8 valid_flags __ro_after_init = 0; +static struct pvclock_vsyscall_time_info *pvti_cpu0_va __ro_after_init; -void pvclock_set_flags(u8 flags) +void __init pvclock_set_flags(u8 flags) { valid_flags = flags; } @@ -153,7 +153,7 @@ void pvclock_read_wallclock(struct pvclock_wall_clock *wall_clock, set_normalized_timespec64(ts, now.tv_sec, now.tv_nsec); } -void pvclock_set_pvti_cpu0_va(struct pvclock_vsyscall_time_info *pvti) +void __init pvclock_set_pvti_cpu0_va(struct pvclock_vsyscall_time_info *pvti) { WARN_ON(vclock_was_used(VDSO_CLOCKMODE_PVCLOCK)); pvti_cpu0_va = pvti;
Now that Xen PV clock and kvmclock explicitly do setup only during init, tag the common PV clock flags/vsyscall variables and their mutators with __init. Signed-off-by: Sean Christopherson <seanjc@google.com> --- arch/x86/kernel/pvclock.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)