search for: mshyperv

.... Signed-off-by: Andrey Smetanin <asmetanin at virtuozzo.com> Signed-off-by: Denis V. Lunev <den at openvz.org> CC: Nick Meier <nmeier at microsoft.com> CC: K. Y. Srinivasan <kys at microsoft.com> CC: Haiyang Zhang <haiyangz at microsoft.com> --- arch/x86/include/asm/mshyperv.h | 1 + arch/x86/kernel/cpu/mshyperv.c | 1 + drivers/hv/vmbus_drv.c | 4 ++-- 3 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index c163215..eebe433 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x...

.... Signed-off-by: Andrey Smetanin <asmetanin at virtuozzo.com> Signed-off-by: Denis V. Lunev <den at openvz.org> CC: Nick Meier <nmeier at microsoft.com> CC: K. Y. Srinivasan <kys at microsoft.com> CC: Haiyang Zhang <haiyangz at microsoft.com> --- arch/x86/include/asm/mshyperv.h | 1 + arch/x86/kernel/cpu/mshyperv.c | 1 + drivers/hv/vmbus_drv.c | 4 ++-- 3 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index c163215..eebe433 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x...

As a preparation to making Hyper-V TSC page suitable for vDSO move the TSC page reading logic to asm/mshyperv.h. While on it, do the following - Document the reading algorithm. - Simplify the code a bit. - Add explicit READ_ONCE() to not rely on 'volatile'. - Add explicit barriers to prevent re-ordering (we need to read sequence strictly before and after) - Use mul_u64_u64_shr() instead of assemb...

...rcelo.cerri at canonical.com> Cc: KY Srinivasan <kys at microsoft.com> Cc: stable at vger.kernel.org Link: https://lkml.kernel.org/r/1541303219-11142-3-git-send-email-mikelley at microsoft.com Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org> --- arch/x86/kernel/cpu/mshyperv.c | 11 +++++++++++ 1 file changed, 11 insertions(+) --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -20,6 +20,7 @@ #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/kexec.h> +#include <linux/i8253.h> #include <asm/pro...

...-requests=500000 run ... real 1m22.618s user 0m50.193s sys 0m32.268s After: # time sysbench --test=memory --max-requests=500000 run ... real 0m47.241s user 0m47.117s sys 0m0.008s Vitaly Kuznetsov (3): x86/hyperv: implement hv_get_tsc_page() x86/hyperv: move TSC reading method to asm/mshyperv.h x86/vdso: Add VCLOCK_HVCLOCK vDSO clock read method arch/x86/entry/vdso/vclock_gettime.c | 24 +++++++++++++++ arch/x86/entry/vdso/vdso-layout.lds.S | 3 +- arch/x86/entry/vdso/vdso2c.c | 3 ++ arch/x86/entry/vdso/vma.c | 7 +++++ arch/x86/hyperv/hv_init.c...

...-requests=500000 run ... real 1m22.618s user 0m50.193s sys 0m32.268s After: # time sysbench --test=memory --max-requests=500000 run ... real 0m47.241s user 0m47.117s sys 0m0.008s Vitaly Kuznetsov (3): x86/hyperv: implement hv_get_tsc_page() x86/hyperv: move TSC reading method to asm/mshyperv.h x86/vdso: Add VCLOCK_HVCLOCK vDSO clock read method arch/x86/entry/vdso/vclock_gettime.c | 24 +++++++++++++++ arch/x86/entry/vdso/vdso-layout.lds.S | 3 +- arch/x86/entry/vdso/vdso2c.c | 3 ++ arch/x86/entry/vdso/vma.c | 7 +++++ arch/x86/hyperv/hv_init.c...

Minor coding comments > diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h > index d324dce..4ff25436 100644 > --- a/arch/x86/include/asm/mshyperv.h > +++ b/arch/x86/include/asm/mshyperv.h > @@ -178,6 +178,56 @@ void hyperv_cleanup(void); > #endif > #ifdef CONFIG_HYPERV_TSCPAGE > struct ms_hyperv_tsc_page *hv_get_...

Minor coding comments > diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h > index d324dce..4ff25436 100644 > --- a/arch/x86/include/asm/mshyperv.h > +++ b/arch/x86/include/asm/mshyperv.h > @@ -178,6 +178,56 @@ void hyperv_cleanup(void); > #endif > #ifdef CONFIG_HYPERV_TSCPAGE > struct ms_hyperv_tsc_page *hv_get_...

...#39;t prevent the code in vdso from migrating between CPUs) I'd like to send v2 with some modifications to keep the discussion going. Changes since v1: - Document the TSC page reading protocol [Thomas Gleixner]. - Separate the TSC page reading code from read_hv_clock_tsc() and put it to asm/mshyperv.h to use from both hv_init.c and vdso. - Add explicit barriers [Thomas Gleixner] Original description: Hyper-V TSC page clocksource is suitable for vDSO, however, the protocol defined by the hypervisor is different from VCLOCK_PVCLOCK. Implemented the required support. Simple sysbench test shows...

...#39;t prevent the code in vdso from migrating between CPUs) I'd like to send v2 with some modifications to keep the discussion going. Changes since v1: - Document the TSC page reading protocol [Thomas Gleixner]. - Separate the TSC page reading code from read_hv_clock_tsc() and put it to asm/mshyperv.h to use from both hv_init.c and vdso. - Add explicit barriers [Thomas Gleixner] Original description: Hyper-V TSC page clocksource is suitable for vDSO, however, the protocol defined by the hypervisor is different from VCLOCK_PVCLOCK. Implemented the required support. Simple sysbench test shows...

...++++++++++++++++++++++++ arch/x86/entry/vdso/vdso-layout.lds.S | 3 ++- arch/x86/entry/vdso/vdso2c.c | 3 +++ arch/x86/entry/vdso/vma.c | 7 +++++++ arch/x86/hyperv/hv_init.c | 12 ++++++++++-- arch/x86/include/asm/clocksource.h | 3 ++- arch/x86/include/asm/mshyperv.h | 8 ++++++++ arch/x86/include/asm/vdso.h | 1 + drivers/hv/Kconfig | 3 +++ 9 files changed, 72 insertions(+), 4 deletions(-) -- 2.9.3

...++++++++++++++++++++++++ arch/x86/entry/vdso/vdso-layout.lds.S | 3 ++- arch/x86/entry/vdso/vdso2c.c | 3 +++ arch/x86/entry/vdso/vma.c | 7 +++++++ arch/x86/hyperv/hv_init.c | 12 ++++++++++-- arch/x86/include/asm/clocksource.h | 3 ++- arch/x86/include/asm/mshyperv.h | 8 ++++++++ arch/x86/include/asm/vdso.h | 1 + drivers/hv/Kconfig | 3 +++ 9 files changed, 72 insertions(+), 4 deletions(-) -- 2.9.3

...g Cc: kvm at vger.kernel.org Cc: xen-devel at lists.xensource.com Cc: virtualization at lists.linux-foundation.org Signed-off-by: Jason Wang <jasowang at redhat.com> --- arch/x86/include/asm/hypervisor.h | 2 +- arch/x86/kernel/cpu/hypervisor.c | 15 +++++++-------- arch/x86/kernel/cpu/mshyperv.c | 13 ++++++++----- arch/x86/kernel/cpu/vmware.c | 8 ++++---- arch/x86/kernel/kvm.c | 6 ++---- arch/x86/xen/enlighten.c | 9 +++------ 6 files changed, 25 insertions(+), 28 deletions(-) diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/as...

...g Cc: kvm at vger.kernel.org Cc: xen-devel at lists.xensource.com Cc: virtualization at lists.linux-foundation.org Signed-off-by: Jason Wang <jasowang at redhat.com> --- arch/x86/include/asm/hypervisor.h | 2 +- arch/x86/kernel/cpu/hypervisor.c | 15 +++++++-------- arch/x86/kernel/cpu/mshyperv.c | 13 ++++++++----- arch/x86/kernel/cpu/vmware.c | 8 ++++---- arch/x86/kernel/kvm.c | 6 ++---- arch/x86/xen/enlighten.c | 9 +++------ 6 files changed, 25 insertions(+), 28 deletions(-) diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/as...

...g Cc: kvm at vger.kernel.org Cc: xen-devel at lists.xensource.com Cc: virtualization at lists.linux-foundation.org Signed-off-by: Jason Wang <jasowang at redhat.com> --- arch/x86/include/asm/hypervisor.h | 2 +- arch/x86/kernel/cpu/hypervisor.c | 15 +++++++-------- arch/x86/kernel/cpu/mshyperv.c | 13 ++++++++----- arch/x86/kernel/cpu/vmware.c | 8 ++++---- arch/x86/kernel/kvm.c | 6 ++---- arch/x86/xen/enlighten.c | 9 +++------ 6 files changed, 25 insertions(+), 28 deletions(-) diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/as...

...CLOCK_HVCLOCK vDSO clock read method arch/x86/entry/vdso/vclock_gettime.c | 48 ++++++++++++++++++++++++++++++++++++ arch/x86/entry/vdso/vma.c | 26 +++++++++++++------ arch/x86/hyperv/hv_init.c | 8 ++++++ arch/x86/include/asm/clocksource.h | 3 ++- arch/x86/include/asm/mshyperv.h | 8 ++++++ drivers/hv/Kconfig | 5 ++++ 6 files changed, 90 insertions(+), 8 deletions(-) -- 2.9.3

...CLOCK_HVCLOCK vDSO clock read method arch/x86/entry/vdso/vclock_gettime.c | 48 ++++++++++++++++++++++++++++++++++++ arch/x86/entry/vdso/vma.c | 26 +++++++++++++------ arch/x86/hyperv/hv_init.c | 8 ++++++ arch/x86/include/asm/clocksource.h | 3 ++- arch/x86/include/asm/mshyperv.h | 8 ++++++ drivers/hv/Kconfig | 5 ++++ 6 files changed, 90 insertions(+), 8 deletions(-) -- 2.9.3

To use Hyper-V TSC page clocksource from vDSO we need to make tsc_pg available. Implement hv_get_tsc_page() and add CONFIG_HYPERV_TSCPAGE to make #ifdef-s simple. Signed-off-by: Vitaly Kuznetsov <vkuznets at redhat.com> --- arch/x86/hyperv/hv_init.c | 9 +++++++-- arch/x86/include/asm/mshyperv.h | 8 ++++++++ drivers/hv/Kconfig | 3 +++ 3 files changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index b371d0e..0ce8485 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -27,10 +27,15 @@ #include...

...i at microsoft.com> > Co-Developed-by: Sunil Muthuswamy <sunilmut at microsoft.com> > Signed-off-by: Wei Liu <wei.liu at kernel.org> > --- > CPU hotplug and unplug is not yet supported in this setup, so those > paths remain untouched. > --- > arch/x86/kernel/cpu/mshyperv.c | 27 +++++++++++++++++++++++++++ > 1 file changed, 27 insertions(+) > > diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c > index 1bf57d310f78..7522cae02759 100644 > --- a/arch/x86/kernel/cpu/mshyperv.c > +++ b/arch/x86/kernel/cpu/mshyperv.c > @@ -...

...at redhat.com> Cc: "marcelo.cerri at canonical.com" <marcelo.cerri at canonical.com> Cc: KY Srinivasan <kys at microsoft.com> Cc: stable at vger.kernel.org Link: https://lkml.kernel.org/r/1541303219-11142-3-git-send-email-mikelley at microsoft.com --- arch/x86/kernel/cpu/mshyperv.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index 1c72f3819eb1..e81a2db42df7 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -20,6 +20,7 @@ #include <linux/interrupt.h>...