On Wed, Jan 3, 2024 at 11:55 AM Yonghong Song wrote:
>
>
> On 1/2/24 6:54 PM, Menglong Dong wrote:
> > On Wed, Jan 3, 2024 at 8:52 AM Martin KaFai Lau
> > wrote:
> >> On 1/2/24 10:11 AM, Stanislav Fomichev wrote:
> >>> On 12/29, Menglong Dong wrote:
> For now, we have to call some helpers
On 1/2/24 6:54 PM, Menglong Dong wrote:
On Wed, Jan 3, 2024 at 8:52 AM Martin KaFai Lau wrote:
On 1/2/24 10:11 AM, Stanislav Fomichev wrote:
On 12/29, Menglong Dong wrote:
For now, we have to call some helpers when we need to update the csum,
such as bpf_l4_csum_replace,
On 2024/1/3 9:33, Yi Liu wrote:
On 2024/1/3 02:44, Jason Gunthorpe wrote:
On Tue, Jan 02, 2024 at 06:38:34AM -0800, Yi Liu wrote:
+static void intel_nested_flush_cache(struct dmar_domain *domain, u64
addr,
+ unsigned long npages, bool ih, u32 *error)
+{
+ struct
On Wed, Jan 3, 2024 at 8:52 AM Martin KaFai Lau wrote:
>
> On 1/2/24 10:11 AM, Stanislav Fomichev wrote:
> > On 12/29, Menglong Dong wrote:
> >> For now, we have to call some helpers when we need to update the csum,
> >> such as bpf_l4_csum_replace, bpf_l3_csum_replace, etc. These helpers are
>
On 2024/1/3 07:38, Jason Gunthorpe wrote:
On Fri, Dec 15, 2023 at 12:01:19PM +0800, Yi Liu wrote:
I think I misread Yi's narrative: dev_id is a working approach
for VMM to convert to a vRID, while he is asking for a better
alternative :)
In concept, dev_id works, but in reality we have
On Tue, Jan 02, 2024 at 03:32:56PM -0800, Suren Baghdasaryan wrote:
> While testing the split PMD path with lockdep enabled I've got an
> "Invalid wait context" error caused by split_huge_page_to_list() trying
> to lock anon_vma->rwsem while inside RCU read section. The issues is due
> to
On 2024/1/3 02:44, Jason Gunthorpe wrote:
On Tue, Jan 02, 2024 at 06:38:34AM -0800, Yi Liu wrote:
+static void intel_nested_flush_cache(struct dmar_domain *domain, u64 addr,
+unsigned long npages, bool ih, u32 *error)
+{
+ struct iommu_domain_info
On 1/2/24 10:11 AM, Stanislav Fomichev wrote:
On 12/29, Menglong Dong wrote:
For now, we have to call some helpers when we need to update the csum,
such as bpf_l4_csum_replace, bpf_l3_csum_replace, etc. These helpers are
not inlined, which causes poor performance.
In fact, we can define our
On Fri, Dec 15, 2023 at 12:01:19PM +0800, Yi Liu wrote:
> > I think I misread Yi's narrative: dev_id is a working approach
> > for VMM to convert to a vRID, while he is asking for a better
> > alternative :)
>
> In concept, dev_id works, but in reality we have problem to get a dev_id
> for a
On Tue, Jan 2, 2024 at 3:16 PM Suren Baghdasaryan wrote:
>
> On Tue, Jan 2, 2024 at 8:58 AM Suren Baghdasaryan wrote:
> >
> > On Tue, Jan 2, 2024 at 1:00 AM Peter Xu wrote:
> > >
> > > On Fri, Dec 29, 2023 at 06:56:07PM -0800, Suren Baghdasaryan wrote:
> > > > @@ -1078,9 +1078,14 @@ static int
While testing the split PMD path with lockdep enabled I've got an
"Invalid wait context" error caused by split_huge_page_to_list() trying
to lock anon_vma->rwsem while inside RCU read section. The issues is due
to move_pages_pte() calling split_folio() under RCU read lock. Fix this
by unmapping
On Tue, Jan 2, 2024 at 8:58 AM Suren Baghdasaryan wrote:
>
> On Tue, Jan 2, 2024 at 1:00 AM Peter Xu wrote:
> >
> > On Fri, Dec 29, 2023 at 06:56:07PM -0800, Suren Baghdasaryan wrote:
> > > @@ -1078,9 +1078,14 @@ static int move_pages_pte(struct mm_struct *mm,
> > > pmd_t *dst_pmd, pmd_t
On Sun, Dec 10, 2023 at 8:56 PM Kyle Huey wrote:
>
> The test sets a hardware breakpoint and uses a bpf program to suppress the
> side effects of a perf event sample, including I/O availability signals,
> SIGTRAPs, and decrementing the event counter limit, if the ip matches the
> expected value.
On Wed, Dec 20, 2023 at 01:53:12PM -0300, Marcos Paulo de Souza wrote:
> Add TEST_GEN_MODS_DIR variable for kselftests. It can point to
> a directory containing kernel modules that will be used by
> selftest scripts.
>
> The modules are built as external modules for the running kernel.
> As a
On Tue, Jan 02, 2024 at 03:15:28PM +0100, Laura Nao wrote:
> Move bash helpers for outputting in KTAP format to the common selftests
> folder. This allows kselftests other than the dt one to source the file
> and make use of the helper functions.
> Define pass, fail and skip codes in the same file
On Tue, Jan 02, 2024 at 06:38:24AM -0800, Yi Liu wrote:
> Lu Baolu (4):
> iommu: Add cache_invalidate_user op
> iommu/vt-d: Allow qi_submit_sync() to return the QI faults
> iommu/vt-d: Convert stage-1 cache invalidation to return QI fault
> iommu/vt-d: Add iotlb flush for nested domain
>
On Tue, Jan 02, 2024 at 06:38:34AM -0800, Yi Liu wrote:
> +static void intel_nested_flush_cache(struct dmar_domain *domain, u64 addr,
> + unsigned long npages, bool ih, u32 *error)
> +{
> + struct iommu_domain_info *info;
> + unsigned long i;
> +
On 12/29, Menglong Dong wrote:
> For now, we have to call some helpers when we need to update the csum,
> such as bpf_l4_csum_replace, bpf_l3_csum_replace, etc. These helpers are
> not inlined, which causes poor performance.
>
> In fact, we can define our own csum update functions in BPF program
On Fri, Dec 15, 2023 at 01:50:07AM +, Tian, Kevin wrote:
> > - Reuse Nicolin's vRID->pRID mapping. If thevRID->pRID mapping is
> > maintained, then intel iommu can report a vRID back to user. But intel
> > iommu driver does not have viommu context, no place to hold the vRID-
> > >pRID
> >
On Tue, 2024-01-02 at 12:56 +0100, Roberto Sassu wrote:
> On 12/26/2023 11:13 PM, Mimi Zohar wrote:
> > On Thu, 2023-12-14 at 18:08 +0100, Roberto Sassu wrote:
> >> From: Roberto Sassu
> >>
> >> As for IMA, move hardcoded EVM function calls from various places in the
> >> kernel to the LSM
On Tue, Jan 2, 2024 at 2:25 PM Richard Gobert wrote:
>
> The existing code always pulls the IPv6 header and sets the transport
> offset initially. Then optionally again pulls any extension headers in
> ipv6_gso_pull_exthdrs and sets the transport offset again on return from
> that call. skb->data
On Tue, Jan 2, 2024 at 2:21 PM Richard Gobert wrote:
>
> This commit adds net_offload to IPv6 Hop-by-Hop extension headers (as it
> is done for routing and dstopts) since it is supported in GSO and GRO.
> This allows to remove specific HBH conditionals in GSO and GRO when
> pulling and parsing an
On Tue, Jan 2, 2024 at 1:00 AM Peter Xu wrote:
>
> On Fri, Dec 29, 2023 at 06:56:07PM -0800, Suren Baghdasaryan wrote:
> > @@ -1078,9 +1078,14 @@ static int move_pages_pte(struct mm_struct *mm,
> > pmd_t *dst_pmd, pmd_t *src_pmd,
> >
> > /* at this point we have src_folio locked */
On 1/2/24 6:24 AM, Richard Gobert wrote:
> The existing code always pulls the IPv6 header and sets the transport
> offset initially. Then optionally again pulls any extension headers in
> ipv6_gso_pull_exthdrs and sets the transport offset again on return from
> that call. skb->data is set at the
On 1/2/24 6:20 AM, Richard Gobert wrote:
> This commit adds net_offload to IPv6 Hop-by-Hop extension headers (as it
> is done for routing and dstopts) since it is supported in GSO and GRO.
> This allows to remove specific HBH conditionals in GSO and GRO when
> pulling and parsing an incoming
Richard Gobert wrote:
> Currently there is no test which checks that IPv6 extension header packets
> successfully coalesce. This commit adds a test, which verifies two IPv6
> packets with HBH extension headers do coalesce, and another test which
> checks that packets with different extension
From: Lu Baolu
This implements the .cache_invalidate_user() callback to support iotlb
flush for nested domain.
Reviewed-by: Kevin Tian
Signed-off-by: Lu Baolu
Co-developed-by: Yi Liu
Signed-off-by: Yi Liu
---
drivers/iommu/intel/nested.c | 107 +++
1 file
This adds the data structure invalidating caches for the nested domain
allocated with IOMMU_HWPT_DATA_VTD_S1 type.
Reviewed-by: Kevin Tian
Signed-off-by: Lu Baolu
Signed-off-by: Yi Liu
---
include/uapi/linux/iommufd.h | 58
1 file changed, 58 insertions(+)
From: Lu Baolu
This makes the pasid based cache invalidation and device TLB invalidation
to return QI faults to callers. This is needed when usersapce invalidates
cache after modifying the stage-1 page table used in nested translation.
Hardware errors during invalidation should be reported to
From: Lu Baolu
This allows qi_submit_sync() to return back faults to callers.
qi_submit_sync() has a retry when timeout error happens, thus it cannot
return timeout error back to the caller. This was discussed in a separate
thread [1]. Here we keep it intact and just make sure no retry for the
From: Nicolin Chen
Add test cases for the IOMMU_HWPT_INVALIDATE ioctl and verify it by using
the new IOMMU_TEST_OP_MD_CHECK_IOTLB.
Reviewed-by: Kevin Tian
Signed-off-by: Nicolin Chen
Co-developed-by: Yi Liu
Signed-off-by: Yi Liu
---
tools/testing/selftests/iommu/iommufd.c | 186
From: Nicolin Chen
Allow to test whether IOTLB has been invalidated or not.
Reviewed-by: Kevin Tian
Signed-off-by: Nicolin Chen
Signed-off-by: Yi Liu
---
drivers/iommu/iommufd/iommufd_test.h | 5
drivers/iommu/iommufd/selftest.c | 26 +++
From: Nicolin Chen
Add mock_domain_cache_invalidate_user() data structure to support user
space selftest program to cover user cache invalidation pathway.
Reviewed-by: Kevin Tian
Signed-off-by: Nicolin Chen
Co-developed-by: Yi Liu
Signed-off-by: Yi Liu
---
From: Nicolin Chen
Wrap up the data pointer/num sanity and __iommu_copy_struct_from_user
call for iommu drivers to copy driver specific data at a specific location
in the struct iommu_user_data_array, and iommu_respond_struct_to_user_array()
to copy response to a specific location in the struct
In nested translation, the stage-1 page table is user-managed but cached
by the IOMMU hardware, so an update on present page table entries in the
stage-1 page table should be followed with a cache invalidation.
Add an IOMMU_HWPT_INVALIDATE ioctl to support such a cache invalidation.
It takes
From: Lu Baolu
The updates of the PTEs in the nested page table will be propagated to the
hardware caches.
Add a new domain op cache_invalidate_user for the userspace to flush the
hardware caches for a nested domain through iommufd. No wrapper for it,
as it's only supposed to be used by
Nested translation is a hardware feature that is supported by many modern
IOMMU hardwares. It has two stages (stage-1, stage-2) address translation
to get access to the physical address. stage-1 translation table is owned
by userspace (e.g. by a guest OS), while stage-2 is owned by kernel. Changes
On 12/21/23 20:46, Miguel Ojeda wrote:
> On Fri, Dec 15, 2023 at 2:21 PM Laura Nao
> wrote:
>>
>> Add new basic kselftest that checks if the available rust sample
>> modules
>> can be added and removed correctly.
>>
>> Signed-off-by: Laura Nao
>
> Thanks Laura!
>
> Shuah: do you want that we
Move bash helpers for outputting in KTAP format to the common selftests
folder. This allows kselftests other than the dt one to source the file
and make use of the helper functions.
Define pass, fail and skip codes in the same file too.
Signed-off-by: Laura Nao
---
Hello:
This series was applied to netdev/net-next.git (main)
by David S. Miller :
On Fri, 22 Dec 2023 13:47:21 +0100 you wrote:
> This MIB counter is similar to the one of TCP -- CurrEstab -- available
> in /proc/net/snmp. This is useful to quickly list the number of MPTCP
> connections without
Hello:
This series was applied to netdev/net-next.git (main)
by David S. Miller :
On Fri, 22 Dec 2023 01:59:05 + you wrote:
> Note that there's another post-merge fix for TCP-AO selftests, but that
> doesn't conflict with these, so I don't resend that:
>
>
Currently there is no test which checks that IPv6 extension header packets
successfully coalesce. This commit adds a test, which verifies two IPv6
packets with HBH extension headers do coalesce, and another test which
checks that packets with different extension header data do not coalesce
in GRO.
The existing code always pulls the IPv6 header and sets the transport
offset initially. Then optionally again pulls any extension headers in
ipv6_gso_pull_exthdrs and sets the transport offset again on return from
that call. skb->data is set at the start of the first extension header
before
This commit adds net_offload to IPv6 Hop-by-Hop extension headers (as it
is done for routing and dstopts) since it is supported in GSO and GRO.
This allows to remove specific HBH conditionals in GSO and GRO when
pulling and parsing an incoming packet.
Signed-off-by: Richard Gobert
Reviewed-by:
This series attempts to reduce the parsing overhead of IPv6 extension
headers in GRO and GSO, by removing extension header specific code and
enabling the frag0 fast path.
The following changes were made:
- Removed some unnecessary HBH conditionals by adding HBH offload
to inet6_offloads
-
On Tue, Jan 02, 2024 at 10:45:59AM +0300, Dan Carpenter wrote:
> Life hack: Don't put RFC in the subject. Especially if it's a v2 or
> higher. No one reads RFC patches.
Thanks for the tip. I've had a mixed experience with RFC series in the past,
though this time around I did get some feedback
On 12/26/2023 11:13 PM, Mimi Zohar wrote:
On Thu, 2023-12-14 at 18:08 +0100, Roberto Sassu wrote:
From: Roberto Sassu
As for IMA, move hardcoded EVM function calls from various places in the
kernel to the LSM infrastructure, by introducing a new LSM named 'evm'
(last and always enabled like
On Tue, Jan 02, 2024 at 04:20:16PM +0800, Yujie Liu wrote:
> On Sun, Dec 31, 2023 at 01:17:11PM +0100, Guillaume Nault wrote:
> > On Fri, Dec 29, 2023 at 09:19:31PM +0800, Yujie Liu wrote:
> > > The patch set [1] added a general lib.sh in net selftests, and converted
> > > several test scripts to
On 12/27/2023 8:21 PM, Mimi Zohar wrote:
On Wed, 2023-12-27 at 17:39 +0100, Roberto Sassu wrote:
On 12/27/2023 2:22 PM, Mimi Zohar wrote:
On Thu, 2023-12-14 at 18:08 +0100, Roberto Sassu wrote:
From: Roberto Sassu
Make the 'ima' LSM independent from the 'integrity' LSM by introducing IMA
On Fri, Dec 29, 2023 at 06:56:07PM -0800, Suren Baghdasaryan wrote:
> @@ -1078,9 +1078,14 @@ static int move_pages_pte(struct mm_struct *mm, pmd_t
> *dst_pmd, pmd_t *src_pmd,
>
> /* at this point we have src_folio locked */
> if (folio_test_large(src_folio)) {
> +
Conform the layout, informational and status messages to TAP. No
functional change is intended other than the layout of output messages.
Signed-off-by: Muhammad Usama Anjum
---
tools/testing/selftests/mm/hugepage-mremap.c | 87
1 file changed, 35 insertions(+), 52
On Sun, Dec 31, 2023 at 01:17:11PM +0100, Guillaume Nault wrote:
> On Fri, Dec 29, 2023 at 09:19:31PM +0800, Yujie Liu wrote:
> > The patch set [1] added a general lib.sh in net selftests, and converted
> > several test scripts to source the lib.sh.
> >
> > unicast_extensions.sh (converted in
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