Messages in this thread | | | From | "Michael Kelley (LINUX)" <> | Subject | RE: [PATCH v3 1/4] drivers/clocksource/hyper-v: Introduce a pointer to TSC page | Date | Thu, 3 Nov 2022 20:58:21 +0000 |
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From: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Sent: Thursday, November 3, 2022 10:59 AM > > Will be used later keep the address of the remapped page for the root > partition as it will be Microsoft Hypervisor defined (and thus won't be a > static address). > > Signed-off-by: Stanislav Kinsburskiy <stanislav.kinsburskiy@gmail.com> > CC: "K. Y. Srinivasan" <kys@microsoft.com> > CC: Haiyang Zhang <haiyangz@microsoft.com> > CC: Wei Liu <wei.liu@kernel.org> > CC: Dexuan Cui <decui@microsoft.com> > CC: Daniel Lezcano <daniel.lezcano@linaro.org> > CC: Thomas Gleixner <tglx@linutronix.de> > CC: linux-hyperv@vger.kernel.org > CC: linux-kernel@vger.kernel.org > --- > drivers/clocksource/hyperv_timer.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/clocksource/hyperv_timer.c b/drivers/clocksource/hyperv_timer.c > index 18de1f439ffd..b0b5df576e17 100644 > --- a/drivers/clocksource/hyperv_timer.c > +++ b/drivers/clocksource/hyperv_timer.c > @@ -367,9 +367,11 @@ static union { > u8 reserved[PAGE_SIZE]; > } tsc_pg __aligned(PAGE_SIZE); > > +static struct ms_hyperv_tsc_page *tsc_page = &tsc_pg.page; > + > struct ms_hyperv_tsc_page *hv_get_tsc_page(void) > { > - return &tsc_pg.page; > + return tsc_page; > } > EXPORT_SYMBOL_GPL(hv_get_tsc_page); > > @@ -407,7 +409,7 @@ static void suspend_hv_clock_tsc(struct clocksource *arg) > > static void resume_hv_clock_tsc(struct clocksource *arg) > { > - phys_addr_t phys_addr = virt_to_phys(&tsc_pg); > + phys_addr_t phys_addr = virt_to_phys(tsc_page); > union hv_reference_tsc_msr tsc_msr; > > /* Re-enable the TSC page */ >
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
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