it's currently missing in the XDP path. Therefore, we are introducing
XDP hints through kfuncs to allow XDP programs to access the RSS hash.
1.
https://lore.kernel.org/all/20231015141644.260646-1-akihiko.od...@daynix.com/#r
Signed-off-by: Liang Chen
---
Changes from v8:
- move max table macro o
On Tue, Apr 16, 2024 at 3:35 PM Heng Qi wrote:
>
>
>
> 在 2024/4/16 下午2:19, Liang Chen 写道:
> > The RSS hash report is a feature that's part of the virtio specification.
> > Currently, virtio backends like qemu, vdpa (mlx5), and potentially vhost
> > (still a w
On Tue, Apr 16, 2024 at 3:20 PM Jason Wang wrote:
>
> On Tue, Apr 16, 2024 at 2:20 PM Liang Chen wrote:
> >
> > The RSS hash report is a feature that's part of the virtio specification.
> > Currently, virtio backends like qemu, vdpa (mlx5), and potentially vhost
>
it's currently missing in the XDP path. Therefore, we are introducing
XDP hints through kfuncs to allow XDP programs to access the RSS hash.
1.
https://lore.kernel.org/all/20231015141644.260646-1-akihiko.od...@daynix.com/#r
Signed-off-by: Liang Chen
---
Changes from v7:
- use table lookup fo
On Mon, Apr 15, 2024 at 3:36 PM Jesper Dangaard Brouer wrote:
>
>
>
> On 13/04/2024 06.10, Liang Chen wrote:
> > The RSS hash report is a feature that's part of the virtio specification.
> > Currently, virtio backends like qemu, vdpa (mlx5), and potentially vhost
>
it's currently missing in the XDP path. Therefore, we are introducing
XDP hints through kfuncs to allow XDP programs to access the RSS hash.
1.
https://lore.kernel.org/all/20231015141644.260646-1-akihiko.od...@daynix.com/#r
Signed-off-by: Liang Chen
---
Changes from v6:
- fix a coding s
On Sat, Apr 13, 2024 at 10:11 AM Jakub Kicinski wrote:
>
> On Thu, 11 Apr 2024 16:52:16 +0800 Liang Chen wrote:
> > + switch (__le16_to_cpu(hdr_hash->hash_report)) {
> > + case VIRTIO_NET_HASH_REPORT_TCPv4:
>
> Please indent things according to the k
it's currently missing in the XDP path. Therefore, we are introducing
XDP hints through kfuncs to allow XDP programs to access the RSS hash.
1.
https://lore.kernel.org/all/20231015141644.260646-1-akihiko.od...@daynix.com/#r
Signed-off-by: Liang Chen
---
Changes from v5:
- Preservation of the
On Mon, Apr 8, 2024 at 2:41 PM Jason Wang wrote:
>
> On Mon, Apr 1, 2024 at 11:38 AM Liang Chen wrote:
> >
> > On Thu, Feb 29, 2024 at 4:37 PM Liang Chen
> > wrote:
> > >
> > > On Tue, Feb 27, 2024 at 4:42 AM John Fastabend
> > > wrote:
>
On Thu, Feb 29, 2024 at 4:37 PM Liang Chen wrote:
>
> On Tue, Feb 27, 2024 at 4:42 AM John Fastabend
> wrote:
> >
> > Jason Wang wrote:
> > > On Fri, Feb 23, 2024 at 9:42 AM Xuan Zhuo
> > > wrote:
> > > >
> > > > On Fri, 09 Feb
On Tue, Feb 27, 2024 at 4:42 AM John Fastabend wrote:
>
> Jason Wang wrote:
> > On Fri, Feb 23, 2024 at 9:42 AM Xuan Zhuo
> > wrote:
> > >
> > > On Fri, 09 Feb 2024 13:57:25 +0100, Paolo Abeni wrote:
> > > > On Fri, 2024-02-09 at 18:39 +0800, Li
On Wed, Feb 7, 2024 at 10:27 PM Paolo Abeni wrote:
>
> On Wed, 2024-02-07 at 10:54 +0800, Liang Chen wrote:
> > On Tue, Feb 6, 2024 at 6:44 PM Paolo Abeni wrote:
> > >
> > > On Sat, 2024-02-03 at 10:56 +0800, Liang Chen wrote:
> > > > On Sat, Feb
On Tue, Feb 6, 2024 at 6:44 PM Paolo Abeni wrote:
>
> On Sat, 2024-02-03 at 10:56 +0800, Liang Chen wrote:
> > On Sat, Feb 3, 2024 at 12:20 AM Jesper Dangaard Brouer
> > wrote:
> > > On 02/02/2024 13.11, Liang Chen wrote:
> [...]
> > > > @@ -1033,6 +1
On Sat, Feb 3, 2024 at 12:20 AM Jesper Dangaard Brouer wrote:
>
>
>
> On 02/02/2024 13.11, Liang Chen wrote:
> > The RSS hash report is a feature that's part of the virtio specification.
> > Currently, virtio backends like qemu, vdpa (mlx5), and potentially vhost
>
it's currently missing in the XDP path. Therefore, we are introducing
XDP hints through kfuncs to allow XDP programs to access the RSS hash.
1.
https://lore.kernel.org/all/20231015141644.260646-1-akihiko.od...@daynix.com/#r
Signed-off-by: Liang Chen
Reviewed-by: Xuan Zhuo
Acked-by:
On Fri, Feb 2, 2024 at 5:58 PM Xuan Zhuo wrote:
>
> On Fri, 2 Feb 2024 17:25:02 +0800, Liang Chen
> wrote:
> > On Thu, Feb 1, 2024 at 1:37 PM Jason Wang wrote:
> > >
> > > On Wed, Jan 31, 2024 at 11:55 AM Liang Chen
> > > wrote:
> > > >
&
On Thu, Feb 1, 2024 at 1:37 PM Jason Wang wrote:
>
> On Wed, Jan 31, 2024 at 11:55 AM Liang Chen wrote:
> >
> > The RSS hash report is a feature that's part of the virtio specification.
> > Currently, virtio backends like qemu, vdpa (mlx5), and potentially vhost
>
it's currently missing in the XDP path. Therefore, we are introducing
XDP hints through kfuncs to allow XDP programs to access the RSS hash.
1.
https://lore.kernel.org/all/20231015141644.260646-1-akihiko.od...@daynix.com/#r
Signed-off-by: Liang Chen
Reviewed-by: Xuan Zhuo
---
drivers/net/vi
On Tue, Jan 30, 2024 at 7:53 PM Xuan Zhuo wrote:
>
> On Thu, 25 Jan 2024 18:19:12 +0800, Liang Chen
> wrote:
> > The RSS hash report is a feature that's part of the virtio specification.
> > Currently, virtio backends like qemu, vdpa (mlx5), and potentially vhost
>
it's currently missing in the XDP path. Therefore, we are introducing
XDP hints through kfuncs to allow XDP programs to access the RSS hash.
1.
https://lore.kernel.org/all/20231015141644.260646-1-akihiko.od...@daynix.com/#r
Signed-off-by: Liang Chen
---
drivers/net/virtio_
On Wed, Jan 24, 2024 at 5:08 PM Xuan Zhuo wrote:
>
> On Wed, 24 Jan 2024 16:57:19 +0800, Liang Chen
> wrote:
> > The xdp program may overwrite the inline virtio header. To ensure the
> > integrity of the virtio header, it is saved in a data structure that
> > wrap
On Wed, Jan 24, 2024 at 7:04 PM Heng Qi wrote:
>
>
>
> 在 2024/1/24 下午4:57, Liang Chen 写道:
> > For the XDP_PASS scenario of the XDP path, the skb constructed with
> > xdp_buff does not include the virtio header. Adding the virtio header
> > information back when cr
On Wed, Jan 24, 2024 at 5:16 PM Xuan Zhuo wrote:
>
> On Wed, 24 Jan 2024 16:57:20 +0800, Liang Chen
> wrote:
> > For the XDP_PASS scenario of the XDP path, the skb constructed with
> > xdp_buff does not include the virtio header. Adding the virtio header
> > informa
it's currently missing in the XDP path. Therefore, we are introducing XDP
hints through kfuncs to allow XDP programs to access the RSS hash.
1.
https://lore.kernel.org/all/20231015141644.260646-1-akihiko.od...@daynix.com/#r
Signed-off-by: Liang Chen
---
drivers/net/virtio_
For the XDP_PASS scenario of the XDP path, the skb constructed with
xdp_buff does not include the virtio header. Adding the virtio header
information back when creating the skb.
Signed-off-by: Liang Chen
---
drivers/net/virtio_net.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a
The xdp program may overwrite the inline virtio header. To ensure the
integrity of the virtio header, it is saved in a data structure that
wraps both the xdp_buff and the header before running the xdp program.
Signed-off-by: Liang Chen
---
drivers/net/virtio_net.c | 43
es from v1:
- introduce a wrapper structure to preserve virtio header
Liang Chen (3):
virtio_net: Preserve virtio header before XDP program execution
virtio_net: Add missing virtio header in skb for XDP_PASS
virtio_net: Support RX hash XDP hint
drivers/net/virtio_n
On Wed, Jan 24, 2024 at 2:06 PM Xuan Zhuo wrote:
>
> On Wed, 24 Jan 2024 10:04:51 +0800, Liang Chen
> wrote:
> > On Mon, Jan 22, 2024 at 7:10 PM Heng Qi wrote:
> > >
> > > Hi Liang Chen,
> > >
> > > 在 2024/1/22 下午6:22, Liang Chen 写道:
> >
On Wed, Jan 24, 2024 at 10:12 AM Jason Wang wrote:
>
> On Mon, Jan 22, 2024 at 6:23 PM Liang Chen wrote:
> >
> > The RSS hash report is a feature that's part of the virtio specification.
> > Currently, virtio backends like qemu, vdpa (mlx5), and potentially vhost
>
On Tue, Jan 23, 2024 at 3:02 PM Michael S. Tsirkin wrote:
>
> On Mon, Jan 22, 2024 at 06:22:56PM +0800, Liang Chen wrote:
> > The RSS hash report is a feature that's part of the virtio specification.
> > Currently, virtio backends like qemu, vdpa (mlx5), and potentially vho
On Mon, Jan 22, 2024 at 7:10 PM Heng Qi wrote:
>
> Hi Liang Chen,
>
> 在 2024/1/22 下午6:22, Liang Chen 写道:
> > The RSS hash report is a feature that's part of the virtio specification.
> > Currently, virtio backends like qemu, vdpa (mlx5), and potentially vhost
> &g
it's currently missing in the XDP path. Therefore, we are introducing XDP
hints through kfuncs to allow XDP programs to access the RSS hash.
Signed-off-by: Liang Chen
---
drivers/net/virtio_net.c | 56
1 file changed, 56 insertions(+)
diff --git a/d
n+0x2b/0x100
[ +0.000753] vfs_write+0xa8/0x1a0
[ +0.000676] ksys_write+0x4d/0xb0
[ +0.000699] do_syscall_64+0x3a/0xf0
[ +0.000692] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Signed-off-by: Liang Chen
---
drivers/md/bcache/super.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff
Considering the fact that the pae_root shadow is not needed when
tdp is in use, skip the pae_root shadow page allocation to allow
mmu creation even not being able to obtain memory from DMA32
zone when particular cgroup cpuset.mems or mempolicy control is
applied.
Signed-off-by: Liang Chen
broken if work_struct or the other
structs get changed, and can be a bit difficult to debug.
Signed-off-by: Liang Chen
---
Replacing all occurences of closure_fn to work_func_fn seems to be an option
but that would end up with a big lenghty and error prone patch.
drivers/md/bcache/closure.h | 6
On Fri, Oct 13, 2017 at 1:44 AM, Michael Lyle wrote:
> On 10/12/2017 07:37 AM, Liang Chen wrote:
>> The use of the union reduces the size of closure struct by taking advantage
>> of the current size of its members. The offset of func in work_struct equals
>> the size of th
broken if work_struct or the other
structs get changed, and can be a bit difficult to debug.
Signed-off-by: Liang Chen
---
Replacing all occurences of closure_fn to work_func_fn seems to be an option
but that would end up with a big lenghty and error prone patch.
drivers/md/bcache/closure.h | 5
e and backing devices right before bch_debug_init runs and
bch_debug_init failes later. So not exposing userspace interface
until everything is ready to avoid that issue.
Signed-off-by: Liang Chen
---
drivers/md/bcache/super.c | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/dr
I had the same feeling, and was reluctant to do so. The reason for making this
change was that current code implicitly converts work_func_t to closure_fn, and
it also depends on the offset and size of a few struct not being changed. So the
patch was introduced essentially to solve that, and keep th
dangerous. It can be broken if work_struct or the other
ones get changed, and can be a bit difficult to debug.
Signed-off-by: Liang Chen
---
drivers/md/bcache/closure.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/md/bcache/closure.h b/drivers/md/bcache/closure.h
As Coly pointed out, bcache_exit() may not be able to handle all the
references properly, if userspace registers cache and backing devices
right before bch_debug_init and bch_debug_init failes later.
Signed-off-by: Liang Chen
---
drivers/md/bcache/super.c | 4 ++--
1 file changed, 2 insertions
Sure! I will find you there:)
On Fri, Jun 23, 2017 at 3:28 PM, wrote:
> Hello Liang chen:
>
> Please see this patch:
>
> http://www.spinics.net/lists/linux-bcache/msg04572.html
>
> Do you have a wechat account? please add me: tangjunhui1984
>
> We can talk mo
Hi Coly,
Thanks for letting me know. Glad to see it's fixed.
Thanks,
Liang
On Fri, Jun 23, 2017 at 3:30 PM, Coly Li wrote:
> On 2017/6/23 下午3:15, Liang Chen wrote:
>> The id passed to ida_simple_remove has to be the one originally
>> allocated with ida_simple_get, not the
The id passed to ida_simple_remove has to be the one originally
allocated with ida_simple_get, not the one after multipling by
BCACHE_MINORS.
Signed-off-by: Liang Chen
---
drivers/md/bcache/super.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/md/bcache
mutex_destroy does nothing most of time, but it's better to call
it to make the code future proof and it also has some meaning
for like mutex debug.
Signed-off-by: Liang Chen
---
drivers/md/bcache/super.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/md/bcache/super.c b/dr
Virtio 1.0 spec allows driver to modify queue size to reduce momery
requeirments. So the driver should write back the queue size actually
allocated, instead of the original value read from the common config
for the queue.
Signed-off-by: Liang Chen
Signed-off-by: Gavin Guo
Suggested-by: Jay
call). And after it's enabled, the MSR enable bit is tested twice
every time. Removing the accumulate_steal_time function also avoids the
necessity of having the accum_steal field.
Signed-off-by: Liang Chen
Signed-off-by: Gavin Guo
---
arch/x86/include/asm/kvm_host.h | 1 -
arch/x86
ults.
Signed-off-by: Liang Chen
Signed-off-by: Gavin Guo
---
Changes since v2:
- Add more description into the changelog
We have been evaluating the enablement of MPOL_MF_LAZY again, and found
this issue. And we decided to push this patch upstream no matter if we
finally determine to prop
MPOL_MF_LAZY is not visible from userspace since 'commit a720094ded8c
("mm: mempolicy: Hide MPOL_NOOP and MPOL_MF_LAZY from userspace for now")'
, but it should still skip non-migratable VMAs.
Signed-off-by: Liang Chen
Signed-off-by: Gavin Guo
---
We have been evaluati
oops, didn't see this ;) Thank you!
Thanks,
Liang
On 09/19/2014 10:00 AM, Paolo Bonzini wrote:
> Il 19/09/2014 15:35, Xiao Guangrong ha scritto:
Which is why just removing it solves more problems for me :)
>> Thank you for raising this question and letting me know the patch's history.
>>
On 09/19/2014 02:12 AM, Xiao Guangrong wrote:
> On 09/19/2014 12:38 AM, Liang Chen wrote:
>> A one-line wrapper around kvm_make_request does not seem
>> particularly useful. Replace kvm_mmu_flush_tlb() with
>> kvm_make_request() again to free the namespace a bit.
>>
&
ies of two patches.
* rename the util function kvm_mmu_flush_tlb in x86.c to
kvm_vcpu_flush_tlb
v1 -> v2:
* Instead of calling kvm_mmu_flush_tlb everywhere to make sure the
stat is always incremented, postponing the counting to
kvm_check_request.
Liang Chen (1):
KVM: x86: direct
A one-line wrapper around kvm_make_request does not seem
particularly useful. Replace kvm_mmu_flush_tlb() with
kvm_make_request() again to free the namespace a bit.
Signed-off-by: Liang Chen
---
arch/x86/include/asm/kvm_host.h | 1 -
arch/x86/kvm/mmu.c | 16 +---
arch
ck_request().
Signed-off-by: Radim Krčmář
Signed-off-by: Liang Chen
---
arch/x86/kvm/mmu.c | 1 -
arch/x86/kvm/x86.c | 4 +++-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 9314678..b41fd97 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86
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