search for: config_page_poisoning

...for packed virtuqueue. Split virtqueue still needs to check the virtqueue size is power_of_2 which has been done in vring_alloc_queue_split of the virtio_ring layer. To validate this change, we tested various virtqueue sizes for packed rings, including 128, 256, 512, 100, 200, 500, and 1000, with CONFIG_PAGE_POISONING enabled, and all tests passed successfully. Signed-off-by: Feng Liu <feliu at nvidia.com> Reviewed-by: Jiri Pirko <jiri at nvidia.com> --- v0 -> v1 feedbacks from Jason Wang and Michael S. Tsirkin - remove power_of_2 check of virtqueue size v1 -> v2 feedbacks from Parav Pandit...

...Split virtqueue still needs to check the virtqueue size is power_of_2 > which has been done in vring_alloc_queue_split of the virtio_ring layer. > > To validate this change, we tested various virtqueue sizes for packed > rings, including 128, 256, 512, 100, 200, 500, and 1000, with > CONFIG_PAGE_POISONING enabled, and all tests passed successfully. > > Signed-off-by: Feng Liu <feliu at nvidia.com> > Reviewed-by: Jiri Pirko <jiri at nvidia.com> Acked-by: Jason Wang <jasowang at redhat.com> Thanks > > --- > v0 -> v1 > feedbacks from Jason Wang and Michael S...

...; > verified how? > Hi Michael 1. Applied the patches on lastest kernel source(44889ba56cbb), compile and install the kernel, and use iperf to test traffic 2. To validate this change, we tested various virtqueue sizes for packed rings, including 128, 256, 512, 100, 200, 500, and 1000, with CONFIG_PAGE_POISONING enabled, and test by iperf& ping -f and all tests passed successfully. >> Feng Liu (3): >> virtio_pci_modern: Allow non power of 2 sizes for virtqueues >> virtio_ring: Avoid using inline for small functions >> virtio_ring: Use const to annotate read-only poin...

...gt; Hi Michael > 1. Applied the patches on lastest kernel source(44889ba56cbb), compile and > install the kernel, and use iperf to test traffic > 2. To validate this change, we tested various virtqueue sizes for packed > rings, including 128, 256, 512, 100, 200, 500, and 1000, with > CONFIG_PAGE_POISONING enabled, and test by iperf& ping -f and all tests > passed successfully. Given split ring does not support non power of 2 how exactly did you configure non power of 2? > > > > Feng Liu (3): > > > virtio_pci_modern: Allow non power of 2 sizes for virtqueues > &gt...

...gt; 1. Applied the patches on lastest kernel source(44889ba56cbb), compile and >> install the kernel, and use iperf to test traffic >> 2. To validate this change, we tested various virtqueue sizes for packed >> rings, including 128, 256, 512, 100, 200, 500, and 1000, with >> CONFIG_PAGE_POISONING enabled, and test by iperf& ping -f and all tests >> passed successfully. > > Given split ring does not support non power of 2 how exactly > did you configure non power of 2? > Hi, Michael We can implement the test by modifying qemu; 1. force the VIRTIO_F_RING_PACKED featu...

...es on lastest kernel source(44889ba56cbb), compile and > > > install the kernel, and use iperf to test traffic > > > 2. To validate this change, we tested various virtqueue sizes for packed > > > rings, including 128, 256, 512, 100, 200, 500, and 1000, with > > > CONFIG_PAGE_POISONING enabled, and test by iperf& ping -f and all tests > > > passed successfully. > > > > Given split ring does not support non power of 2 how exactly > > did you configure non power of 2? > > > > Hi, Michael > We can implement the test by modifying qemu;...

...eue sizes, which is unnecessary and restrictive. This commit removes that check, allowing virtqueues to have arbitrary sizes as specified by the Virtio Specification. To validate this change, we tested various virtqueue sizes for packed rings, including 128, 256, 512, 100, 200, 500, and 1000, with CONFIG_PAGE_POISONING enabled, and all tests passed successfully. Signed-off-by: Feng Liu <feliu at nvidia.com> Reviewed-by: Jiri Pirko <jiri at nvidia.com> Reviewed-by: Parav Pandit <parav at nvidia.com> Reviewed-by: Gavin Li <gavinl at nvidia.com> Reviewed-by: Bodong Wang <bodong at nvidia....

...ACEPOINTS=y @@ -290,7 +288,6 @@ CONFIG_HAVE_PERF_USER_STACK_DUMP=y CONFIG_HAVE_ARCH_JUMP_LABEL=y CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y -CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y CONFIG_HAVE_CMPXCHG_LOCAL=y CONFIG_HAVE_CMPXCHG_DOUBLE=y CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y @@ -7330,8 +7327,7 @@ # CONFIG_PAGE_POISONING is not set # CONFIG_DEBUG_PAGE_REF is not set # CONFIG_DEBUG_OBJECTS is not set -# CONFIG_SLUB_DEBUG_ON is not set -# CONFIG_SLUB_STATS is not set +# CONFIG_DEBUG_SLAB is not set CONFIG_HAVE_DEBUG_KMEMLEAK=y # CONFIG_DEBUG_KMEMLEAK is not set # CONFIG_DEBUG_STACK_USAGE is not set

This patch series performs a clean up of the code in virtio_ring and virtio_pci, modifying it to conform with the Linux kernel coding style guidance [1]. The modifications ensure the code easy to read and understand. This small series does few short cleanups in the code. Patch-1 Allow non power of 2 sizes for packed virtqueues. Patch-2 Avoid using inline for small functions. Patch-3 Use const to

This patch series performs a clean up of the code in virtio_ring and virtio_pci, modifying it to conform with the Linux kernel coding style guidance [1]. The modifications ensure the code easy to read and understand. This small series does few short cleanups in the code. Patch-1 Allow non power of 2 sizes for virtqueues Patch-2 Avoid using inline for small functions. Patch-3 Use const to annotate

On Thu, 20 Jul 2017, Kevin Stange wrote: > On 07/20/2017 05:31 AM, Piotr Gackiewicz wrote: >> On Wed, 19 Jul 2017, Johnny Hughes wrote: >> >>> On 07/19/2017 09:23 AM, Johnny Hughes wrote: >>>> On 07/19/2017 04:27 AM, Piotr Gackiewicz wrote: >>>>> On Mon, 17 Jul 2017, Johnny Hughes wrote: >>>>> >>>>>> Are the

...ONFIG_ARCH_WANT_FRAME_POINTERS=y # CONFIG_FRAME_POINTER is not set # CONFIG_STACK_VALIDATION is not set # CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set # CONFIG_MAGIC_SYSRQ is not set CONFIG_DEBUG_KERNEL=y # # Memory Debugging # # CONFIG_PAGE_EXTENSION is not set # CONFIG_DEBUG_PAGEALLOC is not set # CONFIG_PAGE_POISONING is not set # CONFIG_DEBUG_OBJECTS is not set CONFIG_HAVE_DEBUG_KMEMLEAK=y # CONFIG_DEBUG_KMEMLEAK is not set # CONFIG_DEBUG_STACK_USAGE is not set # CONFIG_DEBUG_VM is not set # CONFIG_DEBUG_VIRTUAL is not set # CONFIG_DEBUG_MEMORY_INIT is not set CONFIG_HAVE_DEBUG_STACKOVERFLOW=y # CONFIG_DEBUG_ST...

On Fri, Oct 28, 2016 at 11:56:30AM +0300, Mika Westerberg wrote: > On Thu, Oct 27, 2016 at 06:06:48PM +0200, Peter Wu wrote: > > On Thu, Oct 27, 2016 at 12:55:08PM +0300, Mika Westerberg wrote: > > > On Thu, Oct 27, 2016 at 09:42:28AM +0000, Rick Kerkhof wrote: > > > > No, there are not. Here is the recursive directory listing: > > > > > > Are

...BSAN_NO_ALIGNMENT=y CONFIG_HAVE_ARCH_KCSAN=y # end of Generic Kernel Debugging Instruments CONFIG_DEBUG_KERNEL=y # CONFIG_DEBUG_MISC is not set # # Memory Debugging # CONFIG_PAGE_EXTENSION=y CONFIG_DEBUG_PAGEALLOC=y # CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT is not set # CONFIG_PAGE_OWNER is not set CONFIG_PAGE_POISONING=y # CONFIG_PAGE_POISONING_NO_SANITY is not set # CONFIG_PAGE_POISONING_ZERO is not set CONFIG_DEBUG_PAGE_REF=y # CONFIG_DEBUG_RODATA_TEST is not set CONFIG_GENERIC_PTDUMP=y CONFIG_PTDUMP_CORE=y # CONFIG_PTDUMP_DEBUGFS is not set CONFIG_DEBUG_OBJECTS=y CONFIG_DEBUG_OBJECTS_SELFTEST=y CONFIG_DEBUG_OB...

...set CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y # CONFIG_UBSAN is not set # end of Generic Kernel Debugging Instruments CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_MISC=y # # Memory Debugging # CONFIG_PAGE_EXTENSION=y CONFIG_DEBUG_PAGEALLOC=y CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT=y # CONFIG_PAGE_OWNER is not set CONFIG_PAGE_POISONING=y CONFIG_PAGE_POISONING_NO_SANITY=y # CONFIG_PAGE_POISONING_ZERO is not set CONFIG_DEBUG_PAGE_REF=y # CONFIG_DEBUG_RODATA_TEST is not set CONFIG_GENERIC_PTDUMP=y # CONFIG_PTDUMP_DEBUGFS is not set # CONFIG_DEBUG_OBJECTS is not set # CONFIG_SLUB_DEBUG_ON is not set CONFIG_SLUB_STATS=y CONFIG_HAVE_DE...

...set CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y # CONFIG_UBSAN is not set # end of Generic Kernel Debugging Instruments CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_MISC=y # # Memory Debugging # CONFIG_PAGE_EXTENSION=y CONFIG_DEBUG_PAGEALLOC=y CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT=y # CONFIG_PAGE_OWNER is not set CONFIG_PAGE_POISONING=y CONFIG_PAGE_POISONING_NO_SANITY=y # CONFIG_PAGE_POISONING_ZERO is not set CONFIG_DEBUG_PAGE_REF=y # CONFIG_DEBUG_RODATA_TEST is not set CONFIG_GENERIC_PTDUMP=y # CONFIG_PTDUMP_DEBUGFS is not set # CONFIG_DEBUG_OBJECTS is not set # CONFIG_SLUB_DEBUG_ON is not set CONFIG_SLUB_STATS=y CONFIG_HAVE_DE...

Setting the IF flag can cause an VM exit. So we should avoid touching the IF flag until absolutely necessary. This patch change the way the paravirt arch_local_irq_restore() works by checking the previous flags value and call arch_local_irq_enable() only if the IF flag was set previously. On a 32 vCPUs KVM guest running the AIM7 five-sec workload, the performance increased slightly from 302136.32

Setting the IF flag can cause an VM exit. So we should avoid touching the IF flag until absolutely necessary. This patch change the way the paravirt arch_local_irq_restore() works by checking the previous flags value and call arch_local_irq_enable() only if the IF flag was set previously. On a 32 vCPUs KVM guest running the AIM7 five-sec workload, the performance increased slightly from 302136.32

..._SECTION_MISMATCH_WARN_ONLY is not set CONFIG_FRAME_POINTER=y # CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set CONFIG_MAGIC_SYSRQ=y CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1 CONFIG_MAGIC_SYSRQ_SERIAL=y CONFIG_DEBUG_KERNEL=y # # Memory Debugging # CONFIG_PAGE_EXTENSION=y # CONFIG_DEBUG_PAGEALLOC is not set CONFIG_PAGE_POISONING=y CONFIG_PAGE_POISONING_NO_SANITY=y CONFIG_PAGE_POISONING_ZERO=y CONFIG_DEBUG_PAGE_REF=y # CONFIG_DEBUG_RODATA_TEST is not set CONFIG_DEBUG_OBJECTS=y CONFIG_DEBUG_OBJECTS_SELFTEST=y CONFIG_DEBUG_OBJECTS_FREE=y # CONFIG_DEBUG_OBJECTS_TIMERS is not set # CONFIG_DEBUG_OBJECTS_WORK is not set # CONFIG_...

..._SECTION_MISMATCH_WARN_ONLY is not set CONFIG_FRAME_POINTER=y # CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set CONFIG_MAGIC_SYSRQ=y CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1 CONFIG_MAGIC_SYSRQ_SERIAL=y CONFIG_DEBUG_KERNEL=y # # Memory Debugging # CONFIG_PAGE_EXTENSION=y # CONFIG_DEBUG_PAGEALLOC is not set CONFIG_PAGE_POISONING=y CONFIG_PAGE_POISONING_NO_SANITY=y CONFIG_PAGE_POISONING_ZERO=y CONFIG_DEBUG_PAGE_REF=y # CONFIG_DEBUG_RODATA_TEST is not set CONFIG_DEBUG_OBJECTS=y CONFIG_DEBUG_OBJECTS_SELFTEST=y CONFIG_DEBUG_OBJECTS_FREE=y # CONFIG_DEBUG_OBJECTS_TIMERS is not set # CONFIG_DEBUG_OBJECTS_WORK is not set # CONFIG_...