On 12/19/23 at 02:44pm, Conor Dooley wrote:
> On Wed, Dec 13, 2023 at 01:57:45PM +0800, Baoquan He wrote:
> > Then when specifying '-d' for kexec_file_load interface, loaded
> > locations of kernel/initrd/cmdline etc can be printed out to help debug.
> >
> > Here replace pr_debug() with the newly
On Tue, Dec 19, 2023 at 11:28:54AM -0500, James Houghton wrote:
> On Tue, Dec 19, 2023 at 2:57 AM wrote:
> >
> > From: Peter Xu
> >
> > Introduce "pud_t pud" in the function, so the code won't dereference *pudp
> > multiple time. Not only because that looks less straightforward, but also
> > bec
On Tue, Dec 19, 2023 at 2:57 AM wrote:
>
> From: Peter Xu
>
> Introduce "pud_t pud" in the function, so the code won't dereference *pudp
> multiple time. Not only because that looks less straightforward, but also
> because if the dereference really happened, it's not clear whether there
> can be
On Wed, Dec 06, 2023 at 11:24:03PM +0100, Christophe Leroy wrote:
> sparse reports an error on some data that gets converted from be32.
>
> That's because that data is typed u32 instead of __be32.
>
> The type is correct, the be32_to_cpu() conversion is not.
>
> Remove the conversion.
>
> Repor
On Tue, 19 Dec 2023 10:30:57 +0800, Shengjiu Wang wrote:
> When flag mclk_with_tere and mclk_direction_output enabled,
> The SAI transmitter or receiver will be enabled in very early
> stage, that if FSL_SAI_xMR is set by previous case,
> for example previous case is one channel, current case is
>
On Wed, Dec 13, 2023 at 01:57:45PM +0800, Baoquan He wrote:
> Then when specifying '-d' for kexec_file_load interface, loaded
> locations of kernel/initrd/cmdline etc can be printed out to help debug.
>
> Here replace pr_debug() with the newly added kexec_dprintk() in kexec_file
> loading related
On 16/12/2023 14.42, Nicholas Piggin wrote:
This has a known failure on QEMU TCG machines where the decrementer
interrupt is not lowered when the DEC wraps from -ve to +ve.
Signed-off-by: Nicholas Piggin
---
lib/powerpc/asm/ppc_asm.h | 1 +
lib/powerpc/asm/processor.h | 22 +++
powerpc
On 16/12/2023 14.42, Nicholas Piggin wrote:
In preparation for improved SMP support, add stop-self support to the
harness. This is non-trivial because it requires an unlocked rtas
call: a CPU can't be holding a spin lock when it goes offline or it
will deadlock other CPUs. rtas permits stop-self
On 16/12/2023 14.42, Nicholas Piggin wrote:
Add basic testing of various kinds of interrupts, machine check,
page fault, illegal, decrementer, trace, syscall, etc.
This has a known failure on QEMU TCG pseries machines where MSR[ME]
can be incorrectly set to 0.
Signed-off-by: Nicholas Piggin
--
On Mon, 2023-12-18 at 19:48 +, Christophe Leroy wrote:
>
> Achtung externe E-Mail: Öffnen Sie Anhänge und Links nur, wenn Sie wissen,
> dass diese aus einer sicheren Quelle stammen und sicher sind. Leiten Sie die
> E-Mail im Zweifelsfall zur Prüfung an den IT-Helpdesk wei
On 16/12/2023 14.42, Nicholas Piggin wrote:
Illegal instructions cause 0xe40 (HEAI) interrupts rather
than program interrupts.
Signed-off-by: Nicholas Piggin
---
powerpc/emulator.c | 19 ++-
1 file changed, 18 insertions(+), 1 deletion(-)
Acked-by: Thomas Huth
On Monday, 18 December, 2023 14:54:03, Daniel Baluta wrote
>
> > * fsl-asoc-card.txt currently follows the old dt-bindings format.
> > Should we update it to DT schema format in this patch series
> > before adding my new properties?
>
> I know this is extra-work but we would greatly appreciate
On 16/12/2023 14.42, Nicholas Piggin wrote:
The QEMU powerpc powernv machine has minor differences that must be
accommodated for in output parsing:
- Summary parsing must search more lines of output for the summary
line, to accommodate OPAL message on shutdown.
- Premature failure testing mus
> This series and my other series are sitting idle in patchwork
> for 3 weeks now. AFAICS they have the needed ack's.
> Anything missing before they can be applied?
Applied to for-next, thanks!
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Michael Ellerman writes:
> There are reports of kernels crashing due to stack overflow while
> running OpenShift (Kubernetes). The primary contributor to the stack
> usage seems to be openvswitch, which is used by OVN-Kubernetes (based on
> OVN (Open Virtual Network)), but NFS also contributes in
On 16/12/2023 14.42, Nicholas Piggin wrote:
This allows different machines with different requirements to be
supported by run_tests.sh, similarly to how different accelerators
are handled.
Signed-off-by: Nicholas Piggin
---
scripts/common.bash | 8 ++--
scripts/runtime.bash | 16 ++
On 16/12/2023 14.42, Nicholas Piggin wrote:
The backtrace handler terminates when it sees a NULL caller address,
but the powerpc stack setup does not keep such a NULL caller frame
at the start of the stack.
This happens to work on pseries because the memory at 0 is mapped and
it contains 0 at th
On 16/12/2023 14.42, Nicholas Piggin wrote:
Modern powerpc64 toolchains require the .got section have alignment of
256 bytes. Incorrect alignment ends up causing the .data section ELF
load address to move by 8 bytes from its file offset, relative to
previous sections. This is not a problem for th
On 16/12/2023 14.42, Nicholas Piggin wrote:
Exception handlers are currently indexed in units of 0x100, but
powerpc can have vectors that are aligned to as little as 0x20
bytes. Increase granularity of the handler functions before
adding support for those vectors.
Signed-off-by: Nicholas Piggin
On 16/12/2023 14.42, Nicholas Piggin wrote:
Installing the same handler twice reports a shifted trap vector
address which is hard to decipher. Print the unshifed address.
Signed-off-by: Nicholas Piggin
---
lib/powerpc/processor.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --
On 16/12/2023 14.42, Nicholas Piggin wrote:
Storing certain values in some registers can cause asynchronous
interrupts that can crash the test case, for example decrementer
or PMU interrupts.
Change the msleep to mdelay which does not enable MSR[EE] and so
avoids the problem. This allows removin
On 16/12/2023 14.42, Nicholas Piggin wrote:
SPRs annotated with SPR_HARNESS can change between consecutive reads
because the test harness code has changed them. Avoid failing the
test in this case.
[XER was observed to change after the next changeset to use mdelay.]
Signed-off-by: Nicholas Pigg
Hi Sourabh
On 11/12/23 2:00 pm, Sourabh Jain wrote:
Due to CPU/Memory hotplug or online/offline events the elfcorehdr
(which describes the CPUs and memory of the crashed kernel) and FDT
(Flattened Device Tree) of kdump image becomes outdated. Consequently,
attempting dump collection with an outd
This trivial patch reorders the newly introduced hcall opcodes for Nestedv2
to follow the increasing-opcode-number convention followed in
'hvcall.h'. The patch also updates the value for MAX_HCALL_OPCODE which is
at various places in arch code for range checking.
Fixes: 19d31c5f1157 ("KVM: PPC: Ad
On Tue, Dec 19, 2023 at 5:12 AM Shengjiu Wang wrote:
>
> When flag mclk_with_tere and mclk_direction_output enabled,
> The SAI transmitter or receiver will be enabled in very early
> stage, that if FSL_SAI_xMR is set by previous case,
> for example previous case is one channel, current case is
> t
From: Peter Xu
Now follow_page() is ready to handle hugetlb pages in whatever form, and
over all architectures. Switch to the generic code path.
Time to retire hugetlb_follow_page_mask(), following the previous
retirement of follow_hugetlb_page() in 4849807114b8.
There may be a slight differen
From: Peter Xu
Hugepd is only used in PowerPC so far on 4K page size kernels where hash
mmu is used. follow_page_mask() used to leverage hugetlb APIs to access
hugepd entries. Teach follow_page_mask() itself on hugepd.
With previous refactors on fast-gup gup_huge_pd(), most of the code can be
From: Peter Xu
Replace pmd_trans_huge() with pmd_thp_or_huge() to also cover pmd_huge() as
long as enabled.
FOLL_TOUCH and FOLL_SPLIT_PMD only apply to THP, not yet huge.
Since now follow_trans_huge_pmd() can process hugetlb pages, renaming it
into follow_huge_pmd() to match what it does. Move
From: Peter Xu
Teach follow_pud_mask() to be able to handle normal PUD pages like hugetlb.
Rename follow_devmap_pud() to follow_huge_pud() so that it can process
either huge devmap or hugetlb. Move it out of TRANSPARENT_HUGEPAGE_PUD and
and huge_memory.c (which relies on CONFIG_THP).
In the new
From: Peter Xu
Introduce "pud_t pud" in the function, so the code won't dereference *pudp
multiple time. Not only because that looks less straightforward, but also
because if the dereference really happened, it's not clear whether there
can be race to see different *pudp values if it's being mod
From: Peter Xu
no_page_table() is not yet used for hugetlb code paths. Make it prepared.
The major difference here is hugetlb will return -EFAULT as long as page
cache does not exist, even if VM_SHARED. See hugetlb_follow_page_mask().
Pass "address" into no_page_table() too, as hugetlb will ne
From: Peter Xu
All the fast-gup functions take a tail page to operate, always need to do
page mask calculations before feeding that into record_subpages().
Merge that logic into record_subpages(), so that it will do the nth_page()
calculation.
Signed-off-by: Peter Xu
---
mm/gup.c | 25 +++
From: Peter Xu
Hugepd format for GUP is only used in PowerPC with hugetlbfs. There are
some kernel usage of hugepd (can refer to hugepd_populate_kernel() for
PPC_8XX), however those pages are not candidates for GUP.
Commit a6e79df92e4a ("mm/gup: disallow FOLL_LONGTERM GUP-fast writing to
file-b
From: Peter Xu
Introduce per-vma begin()/end() helpers for pgtable walks. This is a
preparation work to merge hugetlb pgtable walkers with generic mm.
The helpers need to be called before and after a pgtable walk, will start
to be needed if the pgtable walker code supports hugetlb pages. It's
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