On Fri, Jan 6, 2017 at 10:32 AM, Robin Murphy wrote:
> On 06/01/17 17:48, Jean-Philippe Brucker wrote:
>> Hi Will,
>>
>> On 20/12/16 15:14, Will Deacon wrote:
>>> Booting Linux on an ARM fastmodel containing an SMMU emulation results
>>> in an unexpected I/O page fault from the legacy virtio-blk P
On Fri, Jan 06, 2017 at 10:13:15AM +0800, Jason Wang wrote:
> This patch tries to do several tweaks on vhost_vq_avail_empty() for a
> better performance:
>
> - check cached avail index first which could avoid userspace memory access.
> - using unlikely() for the failure of userspace access
> - che
On Fri, Jan 06, 2017 at 10:13:17AM +0800, Jason Wang wrote:
> We can only process 1 packet at one time during sendmsg(). This often
> lead bad cache utilization under heavy load. So this patch tries to do
> some batching during rx before submitting them to host network
> stack. This is done through
On 06/01/17 17:48, Jean-Philippe Brucker wrote:
> Hi Will,
>
> On 20/12/16 15:14, Will Deacon wrote:
>> Booting Linux on an ARM fastmodel containing an SMMU emulation results
>> in an unexpected I/O page fault from the legacy virtio-blk PCI device:
>>
>> [1.211721] arm-smmu-v3 2b40.smmu: e
Hi Christoph,
2017-01-04 6:25 GMT+01:00 Christoph Hellwig :
> Most users of BLOCK_PC requests allocate the sense buffer on the stack,
> so to avoid DMA to the stack copy them to a field in the heap allocated
> virtblk_req structure. Without that any attempt at SCSI passthrough I/O,
> including th
2017-01-05 10:57 GMT+01:00 Christoph Hellwig :
> On Wed, Jan 04, 2017 at 04:47:03PM +0100, 王金浦 wrote:
>> This sounds scary.
>> Could you share how to reproduce it, this should go into stable if
>> it's the case.
>
> Step 1: Build your kernel with CONFIG_VMAP_STACK=y
> Step 2: issue a SG_IO ioctl, e
when some other buffer is immediately copied into allocated region.
Replace calls to kmalloc followed by a memcpy with a direct
call to kmemdup.
Signed-off-by: Shyam Saini
---
drivers/net/virtio_net.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/net/virtio_net.c
Hi Jason,
On 12/23/2016 03:37 PM, Jason Wang wrote:
Since we use EWMA to estimate the size of rx buffer. When rx buffer
size is underestimated, it's usual to have a packet with more than one
buffers. Consider this is not a bug, remove the warning and correct
the comment before XDP linearizing.
On Thu, 2016-12-15 at 07:15 +0200, Michael S. Tsirkin wrote:
> __bitwise__ used to mean "yes, please enable sparse checks
> unconditionally", but now that we dropped __CHECK_ENDIAN__
> __bitwise is exactly the same.
> There aren't many users, replace it by __bitwise everywhere.
>
> Signed-off-by:
On 20/12/16 15:14, Will Deacon wrote:
> Booting Linux on an ARM fastmodel containing an SMMU emulation results
> in an unexpected I/O page fault from the legacy virtio-blk PCI device:
>
> [1.211721] arm-smmu-v3 2b40.smmu: event 0x10 received:
> [1.211800] arm-smmu-v3 2b40.smmu:
Hi Will,
On 20/12/16 15:14, Will Deacon wrote:
> Booting Linux on an ARM fastmodel containing an SMMU emulation results
> in an unexpected I/O page fault from the legacy virtio-blk PCI device:
>
> [1.211721] arm-smmu-v3 2b40.smmu: event 0x10 received:
> [1.211800] arm-smmu-v3 2b40
Hi Stephen,
[auto build test WARNING on net-next/master]
url:
https://github.com/0day-ci/linux/commits/Stephen-Hemminger/net-make-ndo_get_stats64-a-void-function/20170106-160123
config: xtensa-allmodconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
reproduce:
wget
Hi Stephen,
[auto build test WARNING on net-next/master]
url:
https://github.com/0day-ci/linux/commits/Stephen-Hemminger/net-make-ndo_get_stats64-a-void-function/20170106-160123
config: x86_64-acpi-redef (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce
13 matches
Mail list logo
