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On Mon, Dec 05, 2016 at 10:19:22AM -0500, Pan Xinhui wrote: > pSeries/powerNV will use qspinlock from now on. > > Signed-off-by: Pan Xinhui <xinhui.pan at linux.vnet.ibm.com> > --- > arch/powerpc/platforms/pseries/Kconfig | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerp...

On Mon, Dec 05, 2016 at 10:19:22AM -0500, Pan Xinhui wrote: > pSeries/powerNV will use qspinlock from now on. > > Signed-off-by: Pan Xinhui <xinhui.pan at linux.vnet.ibm.com> > --- > arch/powerpc/platforms/pseries/Kconfig | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerp...

...igned-off-by: Nicholas Piggin <npiggin at gmail.com> > --- > arch/powerpc/include/asm/paravirt.h | 28 ++++++++ > arch/powerpc/include/asm/qspinlock.h | 66 +++++++++++++++++++ > arch/powerpc/include/asm/qspinlock_paravirt.h | 7 ++ > arch/powerpc/platforms/pseries/Kconfig | 5 ++ > arch/powerpc/platforms/pseries/setup.c | 6 +- > include/asm-generic/qspinlock.h | 2 + Another ack? > diff --git a/arch/powerpc/include/asm/paravirt.h b/arch/powerpc/include/asm/paravirt.h > index 7a8546660a63..f2d51f929cf5 100644 >...

...igned-off-by: Nicholas Piggin <npiggin at gmail.com> > --- > arch/powerpc/include/asm/paravirt.h | 28 ++++++++ > arch/powerpc/include/asm/qspinlock.h | 66 +++++++++++++++++++ > arch/powerpc/include/asm/qspinlock_paravirt.h | 7 ++ > arch/powerpc/platforms/pseries/Kconfig | 5 ++ > arch/powerpc/platforms/pseries/setup.c | 6 +- > include/asm-generic/qspinlock.h | 2 + Another ack? > diff --git a/arch/powerpc/include/asm/paravirt.h b/arch/powerpc/include/asm/paravirt.h > index 7a8546660a63..f2d51f929cf5 100644 >...

...iggin <npiggin at gmail.com> >> --- >> arch/powerpc/include/asm/paravirt.h | 28 ++++++++ >> arch/powerpc/include/asm/qspinlock.h | 66 +++++++++++++++++++ >> arch/powerpc/include/asm/qspinlock_paravirt.h | 7 ++ >> arch/powerpc/platforms/pseries/Kconfig | 5 ++ >> arch/powerpc/platforms/pseries/setup.c | 6 +- >> include/asm-generic/qspinlock.h | 2 + > Another ack? > I am OK with adding the #ifdef around queued_spin_lock(). Acked-by: Waiman Long <longman at redhat.com> >> dif...

Hi, I am new to this list, but would greatly appreciate any help on the topic. We are trying to automate the build/installation of a pSeries machine using kickstart server. We have a process in place that completes a system build of xSeries machines. It uses pxelinux.0 to direct the bootp to the kernel, ramdisk and kickstart.config file. I was trying to use the same process to build the pSeries machine. Appropriate booimage and files a...

? 2016/12/6 08:58, Boqun Feng ??: > On Mon, Dec 05, 2016 at 10:19:22AM -0500, Pan Xinhui wrote: >> pSeries/powerNV will use qspinlock from now on. >> >> Signed-off-by: Pan Xinhui <xinhui.pan at linux.vnet.ibm.com> >> --- >> arch/powerpc/platforms/pseries/Kconfig | 8 ++++++++ >> 1 file changed, 8 insertions(+) >> >> diff --git a/arch/powerpc/platforms/pse...

Signed-off-by: Nicholas Piggin <npiggin at gmail.com> --- arch/powerpc/include/asm/paravirt.h | 23 ++++++++ arch/powerpc/include/asm/qspinlock.h | 55 +++++++++++++++++++ arch/powerpc/include/asm/qspinlock_paravirt.h | 5 ++ arch/powerpc/platforms/pseries/Kconfig | 5 ++ arch/powerpc/platforms/pseries/setup.c | 6 +- include/asm-generic/qspinlock.h | 2 + 6 files changed, 95 insertions(+), 1 deletion(-) create mode 100644 arch/powerpc/include/asm/qspinlock_paravirt.h diff --git a/arch/powerpc/include/asm/paravirt.h b...

Signed-off-by: Nicholas Piggin <npiggin at gmail.com> --- arch/powerpc/include/asm/paravirt.h | 28 ++++++++++ arch/powerpc/include/asm/qspinlock.h | 55 +++++++++++++++++++ arch/powerpc/include/asm/qspinlock_paravirt.h | 5 ++ arch/powerpc/platforms/pseries/Kconfig | 5 ++ arch/powerpc/platforms/pseries/setup.c | 6 +- include/asm-generic/qspinlock.h | 2 + 6 files changed, 100 insertions(+), 1 deletion(-) create mode 100644 arch/powerpc/include/asm/qspinlock_paravirt.h diff --git a/arch/powerpc/include/asm/paravirt.h...

Signed-off-by: Nicholas Piggin <npiggin at gmail.com> --- arch/powerpc/include/asm/paravirt.h | 28 ++++++++ arch/powerpc/include/asm/qspinlock.h | 66 +++++++++++++++++++ arch/powerpc/include/asm/qspinlock_paravirt.h | 7 ++ arch/powerpc/platforms/pseries/Kconfig | 5 ++ arch/powerpc/platforms/pseries/setup.c | 6 +- include/asm-generic/qspinlock.h | 2 + 6 files changed, 113 insertions(+), 1 deletion(-) create mode 100644 arch/powerpc/include/asm/qspinlock_paravirt.h diff --git a/arch/powerpc/include/asm/paravirt.h...

pSeries/powerNV will use qspinlock from now on. Signed-off-by: Pan Xinhui <xinhui.pan at linux.vnet.ibm.com> --- arch/powerpc/platforms/pseries/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index b...

...ed_spin_unlock() may write value to a wrong address. now fix it. sorry for not even doing a test on bigendian machine before!!! change from v3: a big change in [PATCH v4 4/6] pv-qspinlock: powerpc support pv-qspinlock no other patch changed. and the patch cover letter tilte has changed as only pseries may need use pv-qspinlock, not all powerpc. 1) __pv_wait will not return until *ptr != val as Waiman gives me a tip. 2) support lock holder serching by storing cpu number into a hash table(implemented as an array) This is because lock_stealing hit too much, up to 10%~20% of all the successful l...

...ed_spin_unlock() may write value to a wrong address. now fix it. sorry for not even doing a test on bigendian machine before!!! change from v3: a big change in [PATCH v4 4/6] pv-qspinlock: powerpc support pv-qspinlock no other patch changed. and the patch cover letter tilte has changed as only pseries may need use pv-qspinlock, not all powerpc. 1) __pv_wait will not return until *ptr != val as Waiman gives me a tip. 2) support lock holder serching by storing cpu number into a hash table(implemented as an array) This is because lock_stealing hit too much, up to 10%~20% of all the successful l...

...on. But the question is can we have virtio devices in the guest which would like to use SWIOTLB based (or any custom DMA API based) bounce buffering with out actually being an IOMMU devices emulated by QEMU/host as been with the current VIRTIO_F_IOMMU_PLATFORM virtio flag ? arch/powerpc/platforms/pseries/iommu.c | 6 ++++++ drivers/virtio/virtio_ring.c | 4 ++++ include/linux/virtio.h | 2 ++ 3 files changed, 12 insertions(+) diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index 06f02960b439..dd15fbddbe89 100644 --- a/arch/powe...

...on. But the question is can we have virtio devices in the guest which would like to use SWIOTLB based (or any custom DMA API based) bounce buffering with out actually being an IOMMU devices emulated by QEMU/host as been with the current VIRTIO_F_IOMMU_PLATFORM virtio flag ? arch/powerpc/platforms/pseries/iommu.c | 6 ++++++ drivers/virtio/virtio_ring.c | 4 ++++ include/linux/virtio.h | 2 ++ 3 files changed, 12 insertions(+) diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index 06f02960b439..dd15fbddbe89 100644 --- a/arch/powe...

This adds a hook which a platform can define in order to allow it to force the use of the DMA API for all virtio devices even if they don't have the VIRTIO_F_IOMMU_PLATFORM flag set. We want to use this to do bounce-buffering of data on the new secure pSeries platform, currently under development, where a KVM host cannot access all of the memory space of a secure KVM guest. The host can only access the pages which the guest has explicitly requested to be shared with the host, thus the virtio implementation in the guest has to copy data to and from shar...

This adds a hook which a platform can define in order to allow it to force the use of the DMA API for all virtio devices even if they don't have the VIRTIO_F_IOMMU_PLATFORM flag set. We want to use this to do bounce-buffering of data on the new secure pSeries platform, currently under development, where a KVM host cannot access all of the memory space of a secure KVM guest. The host can only access the pages which the guest has explicitly requested to be shared with the host, thus the virtio implementation in the guest has to copy data to and from shar...

...ed_spin_unlock() may write value to a wrong address. now fix it. sorry for not even doing a test on bigendian machine before!!! change from v3: a big change in [PATCH v4 4/6] pv-qspinlock: powerpc support pv-qspinlock no other patch changed. and the patch cover letter tilte has changed as only pseries may need use pv-qspinlock, not all powerpc. 1) __pv_wait will not return until *ptr != val as Waiman gives me a tip. 2) support lock holder serching by storing cpu number into a hash table(implemented as an array) This is because lock_stealing hit too much, up to 10%~20% of all the successful l...

...o devices s/virito/virtio/ > This adds a hook which a platform can define in order to allow it to > override virtio device's DMA OPS irrespective of whether it has the > flag VIRTIO_F_IOMMU_PLATFORM set or not. We want to use this to do > bounce-buffering of data on the new secure pSeries platform, currently > under development, where a KVM host cannot access all of the memory > space of a secure KVM guest. The host can only access the pages which > the guest has explicitly requested to be shared with the host, thus > the virtio implementation in the guest has to copy d...

...o devices s/virito/virtio/ > This adds a hook which a platform can define in order to allow it to > override virtio device's DMA OPS irrespective of whether it has the > flag VIRTIO_F_IOMMU_PLATFORM set or not. We want to use this to do > bounce-buffering of data on the new secure pSeries platform, currently > under development, where a KVM host cannot access all of the memory > space of a secure KVM guest. The host can only access the pages which > the guest has explicitly requested to be shared with the host, thus > the virtio implementation in the guest has to copy d...