On Mon, Oct 30, 2023 at 1:14 PM Peter Xu wrote:
>
> On Fri, Oct 27, 2023 at 05:38:13PM -0700, Suren Baghdasaryan wrote:
> > uffd_test_ctx_clear() is being called from uffd_test_ctx_init() to unmap
> > areas used in the previous test run. This approach is problematic because
> > while unmapping are
On 2023-11-02 09:50:38+0100, Willy Tarreau wrote:
> On Tue, Oct 31, 2023 at 09:36:57PM +0100, Thomas Weißschuh wrote:
> > With the out-of-tree builds it's possible do incremental tests fairly fast:
> >
> > time ./run-tests.sh
> > i386: 162 test(s): 162 passed, 0 skipped, 0 failed =>
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
> CAT test doesn't take shareable bits into account, i.e., the test might
> be sharing cache with some devices (e.g., graphics).
>
> Introduce get_mask_no_shareable() and use it to provision an
> environment for CAT test where the allocated LLC
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
> CAT test spawns two processes into two different control groups with
> exclusive schemata. Both the processes alloc a buffer from memory
> matching their allocated LLC block size and flush the entire buffer out
> of caches. Since the processes
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
> show_cache_info() calculates results and provides generic cache
> information. This makes it hard to alter pass/fail conditions.
>
> Separate the test specific checks into CAT and CMT test files and
> leave only the generic information part i
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
> L2 CAT test with low number of bits tends to occasionally fail because
> of what seems random variation. The margin is quite small to begin with
> for <= 2 bits in CBM. At times, the result can even become negative.
> While it would be possibl
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
> CAT selftests only cover L3 but some newer CPUs come also with L2 CAT
> support.
No need to use "new" language. L2 CAT has been available for a long time
... since Apollo Lake. Which systems actually support it is a different
topic. This is a
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
...
> diff --git a/tools/testing/selftests/resctrl/resctrl.h
> b/tools/testing/selftests/resctrl/resctrl.h
> index ec6efd36f60a..e017adf1390d 100644
> --- a/tools/testing/selftests/resctrl/resctrl.h
> +++ b/tools/testing/selftests/resctrl/resct
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
> CAT and CMT tests calculate the span size from the n-bits cache
> allocation on their own.
>
> Add cache_size() helper which calculates size of the cache portion for
> the given number of bits and use it to replace the existing span
> calcula
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
> MBM, MBA and CMT test cases use run_fill_buf() to loop indefinitely
> around the buffer. CAT test case is different and doesn't want to loop
> around the buffer continuously.
Please do not that the changelog starts by describing issue with
ru
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
...
> @@ -229,6 +228,31 @@ int get_cbm_mask(char *cache_type, char *cbm_mask)
> return 0;
> }
>
> +/*
> + * get_cbm_mask - Get cbm bit mask
I know you just copied code here but please keep an eye out for acronyms
to be written in cap
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
...
> diff --git a/tools/testing/selftests/resctrl/mba_test.c
> b/tools/testing/selftests/resctrl/mba_test.c
> index d3bf4368341e..5157a3f74fee 100644
> --- a/tools/testing/selftests/resctrl/mba_test.c
> +++ b/tools/testing/selftests/resctrl/
This patch series give a proposal to support guest VM running
in user mode and in canonical linear address organization as
well.
First design to parition the 64-bit canonical linear address space
into two half parts belonging to user-mode and supervisor-mode
respectively, similar as the organizati
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
> Perf event handling has functions that are the sole caller of another
> perf event handling related function:
> - reset_enable_llc_perf() calls perf_event_open_llc_miss()
> - reset_enable_llc_perf() calls ioctl_perf_event_ioc_reset_enable(
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
> Perf counters are __u64 but the code converts them to unsigned long
> before printing them out.
>
> Remove unnecessary type conversion and the potential loss of meaningful
> bits due to different sizes of types.
This motivation is not clear
Hi Ilpo,
On 10/24/2023 2:26 AM, Ilpo Järvinen wrote:
> The measure_cache_vals() function does a different thing depending on
No need to say "function" when using "()". The above can just be:
"measure_cache_vals() does a different ..."
> the test case that called it:
> - For CAT, it measures LL
On Thu, Nov 02, 2023 at 07:15:58PM +0530, Naresh Kamboju wrote:
> On Thu, 2 Nov 2023 at 17:41, Aishwarya TCV wrote:
> > https://storage.kernelci.org/mainline/master/v6.6-9152-gdeefd5024f07/arm64/defconfig%2Bkselftest/gcc-10/logs/kselftest.log
...
> May be due to, A loop of symlinks that are poi
Fix the approach to get page map from gva to gpa.
If gva maps a 4-KByte page, current implementation of addr_arch_gva2gpa()
will obtain wrong page size and cannot derive correct offset from the guest
virtual address.
Meanwhile using HUGEPAGE_MASK(x) to calculate the offset within page
(1G/2M/4K)
Introduce vcpu_setup_user_mode() to support vcpu run in user mode.
Signed-off-by: Zeng Guang
---
.../selftests/kvm/include/x86_64/processor.h | 1 +
.../selftests/kvm/lib/x86_64/processor.c | 19 +++
2 files changed, 20 insertions(+)
diff --git a/tools/testing/selftests/k
Configure the U/S bit in paging-structure entries according to operation
mode and delimit user has user-mode access only to user-mode address
space.
Similarly set I/O privilege level as ring 3 in EFLAGS register to allow
user to access the I/O address space.
Signed-off-by: Zeng Guang
---
.../se
Setup execution environment running on 64-bit linear addresses for
user and supervisor mode.
Define the linear address based on 48-bit canonical format in which
bits 63:47 of the address are identical. All addresses to system data
structure are shifted to supervisor-mode address space.
Extend pag
Extend the page size of stack memory that can be shared for user mode.
And configure the canonical linear address of the stack point(RSP0) for
privilege level 0 in TSS segment which processor will use to switch task,
e.g. from user mode back to supervisor mode triggered by interrupt.
Refactor KVM
Adapt RIP to kernel canonical linear address in test cases
set_memory_region_test/debug_regs/userspace_msr_exit_test.
No functional change intended.
Signed-off-by: Zeng Guang
---
.../testing/selftests/kvm/set_memory_region_test.c | 13 ++---
tools/testing/selftests/kvm/x86_64/debug_reg
Introduce KVM selftest exception fixup using forced emulation prefix to
emulate instruction unconditionally when kvm.force_emulation_prefix is
enabled.
Signed-off-by: Zeng Guang
---
.../selftests/kvm/include/x86_64/processor.h | 20 +++
1 file changed, 20 insertions(+)
diff --g
Add virt_arch_ucall_prealloc() which allows to preprocess the memory
allocated to ucall_pool as per arch specific requirement.
For X86 platform, it needs to adjust the address to corresponding
address space based on the operation mode, i.e. user or supervisor
mode, at runtime.
There is no change
Hello:
This patch was applied to bpf/bpf.git (master)
by Alexei Starovoitov :
On Thu, 2 Nov 2023 11:35:37 +0100 you wrote:
> From: Björn Töpel
>
> There are architectures where char is not signed. If so, the following
> error is triggered:
>
> | xdp_hw_metadata.c:435:42: error: result of co
Hi Aishwarya,
On Thu, 2 Nov 2023 at 17:41, Aishwarya TCV wrote:
>
>
>
> On 28/08/2023 22:13, Nícolas F. R. A. Prado wrote:
> > Introduce a new kselftest to detect devices that were declared in the
> > Devicetree, and are expected to be probed by a driver, but weren't.
> >
> > The test uses two li
On Thu, Oct 26, 2023 at 10:49:24AM +0800, Lu Baolu wrote:
> Hi folks,
>
> This series implements the functionality of delivering IO page faults to
> user space through the IOMMUFD framework for nested translation. Nested
> translation is a hardware feature that supports two-stage translation
> tab
On 02/11/2023 12:24, Ryan Roberts wrote:
> Hi Breno,
>
>
> On 05/10/2023 17:39, Breno Leitao wrote:
>> Create a selftest that exercises the race between page faults and
>> madvise(MADV_DONTNEED) in the same huge page. Do it by running two
>> threads that touches the huge page and madvise(MADV_DON
Hi Breno,
On 05/10/2023 17:39, Breno Leitao wrote:
> Create a selftest that exercises the race between page faults and
> madvise(MADV_DONTNEED) in the same huge page. Do it by running two
> threads that touches the huge page and madvise(MADV_DONTNEED) at the same
> time.
>
> In case of a SIGBUS
On 28/08/2023 22:13, Nícolas F. R. A. Prado wrote:
> Introduce a new kselftest to detect devices that were declared in the
> Devicetree, and are expected to be probed by a driver, but weren't.
>
> The test uses two lists: a list of compatibles that can match a
> Devicetree device to a driver, a
On 02/11/2023 11:49, Muhammad Usama Anjum wrote:
> On 11/2/23 4:45 PM, Ryan Roberts wrote:
>> On 21/08/2023 15:15, Muhammad Usama Anjum wrote:
>>
>> [...]
>>
>>> +
>>> +
>>> +int init_uffd(void)
>>> +{
>>> + struct uffdio_api uffdio_api;
>>> +
>>> + uffd = syscall(__NR_userfaultfd, O_CLOEXEC |
Update the get-reg-list test to test the Svadu Extension is available
for guest OS.
Signed-off-by: Yong-Xuan Wang
---
.../testing/selftests/kvm/riscv/get-reg-list.c | 18 ++
1 file changed, 18 insertions(+)
diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c
b/tools/t
On 11/2/23 4:45 PM, Ryan Roberts wrote:
> On 21/08/2023 15:15, Muhammad Usama Anjum wrote:
>
> [...]
>
>> +
>> +
>> +int init_uffd(void)
>> +{
>> +struct uffdio_api uffdio_api;
>> +
>> +uffd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK |
>> UFFD_USER_MODE_ONLY);
>> +if (uffd ==
On 21/08/2023 15:15, Muhammad Usama Anjum wrote:
[...]
> +
> +
> +int init_uffd(void)
> +{
> + struct uffdio_api uffdio_api;
> +
> + uffd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK |
> UFFD_USER_MODE_ONLY);
> + if (uffd == -1)
> + ksft_exit_fail_msg("uffd syscall
rrect by changing the char to int.
>
> Fixes: bb6a5fde ("selftests/bpf: Add options and frags to
> xdp_hw_metadata")
> Signed-off-by: Björn Töpel
Thank you for the patch.
I saw the same failure when I built selftests/bpf for arm64.
With this patch ontop of today
On Thu, Nov 02, 2023 at 11:35:37AM +0100, Björn Töpel wrote:
> From: Björn Töpel
>
> There are architectures where char is not signed. If so, the following
> error is triggered:
>
> | xdp_hw_metadata.c:435:42: error: result of comparison of constant -1 \
> | with expression of type 'char'
From: Björn Töpel
There are architectures where char is not signed. If so, the following
error is triggered:
| xdp_hw_metadata.c:435:42: error: result of comparison of constant -1 \
| with expression of type 'char' is always true \
| [-Werror,-Wtautological-constant-out-of-range-compar
[AMD Official Use Only - General]
Hi meng Li,
> -Original Message-
> From: Meng, Li (Jassmine)
> Sent: Monday, October 30, 2023 2:34 PM
> To: Rafael J . Wysocki ; Huang, Ray
>
> Cc: linux...@vger.kernel.org; linux-ker...@vger.kernel.org; x...@kernel.org;
> linux-a...@vger.kernel.org; S
On Tue, Oct 31, 2023 at 09:36:57PM +0100, Thomas Weißschuh wrote:
> With the out-of-tree builds it's possible do incremental tests fairly fast:
>
> time ./run-tests.sh
> i386: 162 test(s): 162 passed, 0 skipped, 0 failed => status:
> success
> x86_64:162 test(s): 162 passed,
On Tue, Oct 31, 2023 at 09:36:58PM +0100, Thomas Weißschuh wrote:
> qemu for LoongArch does not work properly with direct kernel boot.
> The kernel will panic during initialization and hang without any output.
>
> When booting in EFI mode everything work correctly.
>
> While users most likely don
By default, all the test output will be printed to stdout or output.log if
-s supplied. The kselftest/runner.sh also supports per test log if the
variable per_test_logging is set. So add new option -p to set this
veriable. Note the -p option is conflict with -s option.
Signed-off-by: Hangbin Liu
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