On Wed, Jan 08, 2025 at 09:45:45AM -0800, Alexei Starovoitov wrote:
> On Tue, Dec 31, 2024 at 2:30 AM Thomas Weißschuh wrote:
> >
> > On 2024-12-30 16:50:41-0800, Alexei Starovoitov wrote:
> > > On Sat, Dec 28, 2024 at 12:43 AM Thomas Weißschuh
> > > wrote:
> > > >
> > > > Most users use this fu
://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
patch link:
https://lore.kernel.org/r/20250104204652.388720-6-haren%40linux.ibm.com
patch subject: [PATCH 5/6] powerpc/pseries: Add ibm,get-dynamic-sensor-state
RTAS call support
config: powerpc64-randconfig-r071-20250108
(https
://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
patch link:
https://lore.kernel.org/r/20250104204652.388720-5-haren%40linux.ibm.com
patch subject: [PATCH 4/6] powerpc/pseries: Add ibm,set-dynamic-indicator RTAS
call support
config: powerpc64-randconfig-r071-20250108
(https
The following line appears at boot:
IPIC (128 IRQ sources) at (ptrval)
This is pointless so remove the printing of the virtual address and
replace it by matching physical address.
Signed-off-by: Christophe Leroy
---
arch/powerpc/sysdev/ipic.c | 3 +--
1 file changed, 1 insertion(+), 2
The following appears in kernel log at boot:
fsl_spi b01004c0.spi: at 0x(ptrval) (irq = 51), QE mode
This is useless, so remove the display of that virtual address and
display the MMIO address instead, just like serial core does.
Signed-off-by: Christophe Leroy
---
drivers/spi/spi-fsl-
Le 08/01/2025 à 21:14, Arnaldo Carvalho de Melo a écrit :
On Wed, Jan 08, 2025 at 10:15:24AM +0100, Christophe Leroy wrote:
Depending on how vmlinux.lds is written, _etext might be the very
first data symbol instead of the very last text symbol.
Don't require it to be a text symbol, accept a
On Wed, Jan 08, 2025 at 04:14:20PM -0800, Dan Williams wrote:
> Alistair Popple wrote:
> > Prior to freeing a block file systems supporting FS DAX must check
> > that the associated pages are both unmapped from user-space and not
> > undergoing DMA or other access from eg. get_user_pages(). This is
Hello Andrew,
On 09/01/25 10:58, Andrew Morton wrote:
On Thu, 9 Jan 2025 09:42:14 +0530 Sourabh Jain
wrote:
Hello Baoquan and Eric,
On 12/12/24 08:25, Baoquan he wrote:
On 12/10/24 at 02:43pm, Sourabh Jain wrote:
kexec_elf_load() loads an ELF executable and sets the address of the
lowest
On 2025/01/08 22:50, Dave Martin wrote:
On Wed, Jan 08, 2025 at 01:53:51PM +0900, Akihiko Odaki wrote:
On 2025/01/08 1:17, Dave Martin wrote:
Hi,
On Tue, Jan 07, 2025 at 09:45:56PM +0900, Akihiko Odaki wrote:
Use note name macros to match with the userspace's expectation.
Signed-off-by: Akih
On Thu, 9 Jan 2025 09:42:14 +0530 Sourabh Jain
wrote:
> Hello Baoquan and Eric,
>
>
> On 12/12/24 08:25, Baoquan he wrote:
> > On 12/10/24 at 02:43pm, Sourabh Jain wrote:
> >> kexec_elf_load() loads an ELF executable and sets the address of the
> >> lowest PT_LOAD section to the address held b
On Wed, Jan 08, 2025 at 02:50:36PM -0800, Dan Williams wrote:
> Alistair Popple wrote:
> > Several functions internal to FS DAX use the following pattern when
> > trying to obtain an unlocked entry:
> >
> > xas_for_each(&xas, entry, end_idx) {
> > if (dax_is_locked(entry))
> > entr
On Wed, Jan 08, 2025 at 02:30:24PM -0800, Dan Williams wrote:
> Alistair Popple wrote:
> > FS DAX requires file systems to call into the DAX layout prior to
> > unlinking inodes to ensure there is no ongoing DMA or other remote
> > access to the direct mapped page. The fuse file system implements
>
Hello Baoquan and Eric,
On 12/12/24 08:25, Baoquan he wrote:
On 12/10/24 at 02:43pm, Sourabh Jain wrote:
kexec_elf_load() loads an ELF executable and sets the address of the
lowest PT_LOAD section to the address held by the lowest_load_addr
function argument.
To determine the lowest PT_LOAD a
Hello Baoquan,
On 08/01/25 16:46, Baoquan he wrote:
On 01/08/25 at 03:44pm, Sourabh Jain wrote:
cmdline argument is not used in reserve_crashkernel_generic() so remove
it. Correspondingly, all the callers have been updated as well.
No functional change intended.
Cc: Andrew Morton
Cc: Baoqua
Hello Mahesh,
On 08/01/25 22:35, Mahesh J Salgaonkar wrote:
On 2025-01-08 15:44:57 Wed, Sourabh Jain wrote:
Commit 0ab97169aa05 ("crash_core: add generic function to do
reservation") added a generic function to reserve crashkernel memory.
So let's use the same function on powerpc and remove the
Hello Mahesh,
On 08/01/25 22:36, Mahesh J Salgaonkar wrote:
On 2025-01-08 15:44:56 Wed, Sourabh Jain wrote:
Commit 59d58189f3d9 ("crash: fix crash memory reserve exceed system
memory bug") fails crashkernel parsing if the crash size is found to be
higher than system RAM, which makes the memory
On Tue, Jan 07, 2025 at 02:42:16PM +1100, Alistair Popple wrote:
> Main updates since v4:
>
> - Removed most of the devdax/fsdax checks in fs/proc/task_mmu.c. This
>means smaps/pagemap may contain DAX pages.
>
> - Fixed rmap accounting of PUD mapped pages.
>
> - Minor code clean-ups.
>
>
Alistair Popple wrote:
> Prior to freeing a block file systems supporting FS DAX must check
> that the associated pages are both unmapped from user-space and not
> undergoing DMA or other access from eg. get_user_pages(). This is
> achieved by unmapping the file range and scanning the FS DAX
> page
Hi all,
Today's linux-next merge of the powerpc tree got a conflict in:
arch/powerpc/Kconfig
between commit:
c0c3319917db ("mm: remove devmap related functions and page table bits")
from the mm-unstable branch of the mm tree and commit:
00199ed6f2ca ("powerpc: Add preempt lazy support")
Alistair Popple wrote:
> Several functions internal to FS DAX use the following pattern when
> trying to obtain an unlocked entry:
>
> xas_for_each(&xas, entry, end_idx) {
> if (dax_is_locked(entry))
> entry = get_unlocked_entry(&xas, 0);
>
> This is problematic because get_un
On Wed, Jan 8, 2025 at 8:04 AM Basharath Hussain Khaja
wrote:
>
> Hi,
>
> >> Thomas Weißschuh writes:
> >> > The members "start" and "end" of struct resource are of type
> >> > "resource_size_t" which can be 32bit wide.
> >> > Values read from OF however are always 64bit wide.
> >> >
> >> > Refac
Alistair Popple wrote:
> dax_layout_busy_page_range() is used by file systems to scan the DAX
> page-cache to unmap mapping pages from user-space and to determine if
> any pages in the given range are busy, either due to ongoing DMA or
> other get_user_pages() usage.
>
> Currently it checks to see
Alistair Popple wrote:
> FS DAX requires file systems to call into the DAX layout prior to
> unlinking inodes to ensure there is no ongoing DMA or other remote
> access to the direct mapped page. The fuse file system implements
> fuse_dax_break_layouts() to do this which includes a comment
> indica
On Wed, Jan 08, 2025 at 03:40:11PM -0500, Yazen Ghannam wrote:
> On Wed, Dec 18, 2024 at 04:37:43PM +0200, Ilpo Järvinen wrote:
> > pcie_read_tlp_log()'s prototype and function signature diverged due to
> > changes made while applying.
> >
> > Make the parameters of pcie_read_tlp_log() named ident
Andrew Morton wrote:
> On Tue, 7 Jan 2025 14:42:16 +1100 Alistair Popple wrote:
>
> > Device and FS DAX pages have always maintained their own page
> > reference counts without following the normal rules for page reference
> > counting. In particular pages are considered free when the refcount
>
On Wed, Jan 08, 2025 at 07:40:38PM +0100, Christophe Leroy wrote:
> Printing of Kernel virtual memory layout was added for debug purpose
> by commit f637a49e507c ("powerpc: Minor cleanups of kernel virt
> address space definitions")
>
> For security reasons, don't display the kernel's virtual memo
On Wed, Dec 18, 2024 at 04:37:46PM +0200, Ilpo Järvinen wrote:
> pcie_read_tlp_log() handles only 4 Header Log DWORDs but TLP Prefix Log
> (PCIe r6.1 secs 7.8.4.12 & 7.9.14.13) may also be present.
>
> Generalize pcie_read_tlp_log() and struct pcie_tlp_log to handle also
> TLP Prefix Log. The rele
On Wed, Dec 18, 2024 at 04:37:45PM +0200, Ilpo Järvinen wrote:
> eetlp_prefix_path in the struct pci_dev tells if End-End TLP Prefixes
> are supported by the path or not, the value is only calculated if
> CONFIG_PCI_PASID is set.
>
> The Max End-End TLP Prefixes field in the Device Capabilities Re
On Wed, Jan 08, 2025 at 10:15:24AM +0100, Christophe Leroy wrote:
> Depending on how vmlinux.lds is written, _etext might be the very
> first data symbol instead of the very last text symbol.
>
> Don't require it to be a text symbol, accept any symbol type.
I'm adding a Link:
Link:
https://lore
On Wed, Dec 18, 2024 at 04:37:43PM +0200, Ilpo Järvinen wrote:
> pcie_read_tlp_log()'s prototype and function signature diverged due to
> changes made while applying.
>
> Make the parameters of pcie_read_tlp_log() named identically.
>
> Signed-off-by: Ilpo Järvinen
> Reviewed-by: Jonathan Camero
Hi,
>> Thomas Weißschuh writes:
>> > The members "start" and "end" of struct resource are of type
>> > "resource_size_t" which can be 32bit wide.
>> > Values read from OF however are always 64bit wide.
>> >
>> > Refactor the diff overflow checks into a helper function.
>> > Also extend the checks
On Wed, Jan 08, 2025 at 06:06:03PM +0100, Christophe Leroy wrote:
>
>
> Le 08/01/2025 à 15:53, Arnaldo Carvalho de Melo a écrit :
> > On Wed, Jan 08, 2025 at 10:54:20AM +0100, Christophe Leroy wrote:
> > > Since commit 659ad3492b91 ("perf maps: Switch from rbtree to lazily
> > > sorted array for
Printing of Kernel virtual memory layout was added for debug purpose
by commit f637a49e507c ("powerpc: Minor cleanups of kernel virt
address space definitions")
For security reasons, don't display the kernel's virtual memory layout.
Other architectures have removed it through following commits.
Le 06/01/2025 à 22:46, Namhyung Kim a écrit :
And in System.map I have:
c136a000 D __start___bug_table
c1377c14 D __stop___bug_table
c1378000 B __bss_start
c1378000 B _edata
c1378000 B initcall_debug
c1378004 B reset_devices
Should perf try to locate the very last symbol when it doesn't fin
On Tue, Dec 31, 2024 at 2:30 AM Thomas Weißschuh wrote:
>
> On 2024-12-30 16:50:41-0800, Alexei Starovoitov wrote:
> > On Sat, Dec 28, 2024 at 12:43 AM Thomas Weißschuh
> > wrote:
> > >
> > > Most users use this function through the BIN_ATTR_SIMPLE* macros,
> > > they can handle the switch trans
Hi,
On Sun, Dec 22, 2024 at 10:32 PM wzs wrote:
>
> Hello,
> when fuzzing the Linux kernel,
> I triggered many "watch: BUG: soft lockup" warnings.
> I am not sure whether this is an issue with the kernel or with the
> fuzzing program I ran.
> (The same fuzzing program, when tested on kernel versi
On Wed, Jan 8, 2025 at 1:54 AM Christophe Leroy
wrote:
>
> Since commit 659ad3492b91 ("perf maps: Switch from rbtree to lazily
> sorted array for addresses"), perf doesn't display anymore kernel
> symbols on powerpc, allthough it still detects them as kernel addresses.
>
> # Overhead Comm
Le 08/01/2025 à 15:53, Arnaldo Carvalho de Melo a écrit :
On Wed, Jan 08, 2025 at 10:54:20AM +0100, Christophe Leroy wrote:
Since commit 659ad3492b91 ("perf maps: Switch from rbtree to lazily
sorted array for addresses"), perf doesn't display anymore kernel
symbols on powerpc, allthough it st
Hi Alex,
On 1/7/25 5:45 AM, Alex Williamson wrote
> Hi,
>
> What are you supposing the value to the community is for a CI pipeline
> that always fails? Are you hoping the community will address the
> failing tests or monitor the failures to try to make them not become
> worse?
The failing tests
On 2025-01-08 15:44:56 Wed, Sourabh Jain wrote:
> Commit 59d58189f3d9 ("crash: fix crash memory reserve exceed system
> memory bug") fails crashkernel parsing if the crash size is found to be
> higher than system RAM, which makes the memory_limit adjustment code
> ineffective due to an early exit f
On 2025-01-08 15:44:57 Wed, Sourabh Jain wrote:
> Commit 0ab97169aa05 ("crash_core: add generic function to do
> reservation") added a generic function to reserve crashkernel memory.
> So let's use the same function on powerpc and remove the
> architecture-specific code that essentially does the sa
Starting with PAPR level 2.13, platform supports placing PHB in limited
address mode. Devices that support DMA masks less that 64-bit but greater
than 32-bits are placed in limited address mode. In this mode, the
starting DMA address returned by the DDW is 4GB.
When the device driver calls dma_sup
On Wed, Dec 18, 2024 at 04:37:42PM +0200, Ilpo Järvinen wrote:
> TLP Log is PCIe feature and is processed only by AER and DPC.
> Configwise, DPC depends AER being enabled. In lack of better place, the
> TLP Log handling code was initially placed into pci.c but it can be
> easily placed in a separat
On Wed, Jan 08, 2025 at 02:57:22PM +0800, Qi Zheng wrote:
> Like PMD and PTE level page table, also add statistics for PUD and P4D
> page table.
>
> Signed-off-by: Qi Zheng
> Suggested-by: Peter Zijlstra (Intel)
> Reviewed-by: Kevin Brodsky
> Cc: linux-s...@vger.kernel.org
> ---
> arch/s390/in
On Wed, Dec 18, 2024 at 04:37:41PM +0200, Ilpo Järvinen wrote:
> pcie_read_tlp_log() was exposed by the commit 0a5a46a6a61b ("PCI/AER:
> Generalize TLP Header Log reading") but this is now considered a
> mistake. No drivers outside of PCI subsystem should build their own
> diagnostic logging but sh
On Wed, Jan 08, 2025 at 02:57:29PM +0800, Qi Zheng wrote:
> Call pagetable_dtor() for PMD|PUD|P4D tables just before ptdesc is
> freed - same as it is done for PTE tables. That allows consolidating
> TLB free paths for all table types.
>
> Signed-off-by: Qi Zheng
> Suggested-by: Peter Zijlstra (I
On Wed, Jan 08, 2025 at 02:57:23PM +0800, Qi Zheng wrote:
> The pagetable_p*_dtor() are exactly the same except for the handling of
> ptlock. If we make ptlock_free() handle the case where ptdesc->ptl is
> NULL and remove VM_BUG_ON_PAGE() from pmd_ptlock_free(), we can unify
> pagetable_p*_dtor() i
On Wed, Dec 18, 2024 at 04:37:40PM +0200, Ilpo Järvinen wrote:
> This series has the remaining patches of the AER & DPC TLP Log handling
> consolidation and now includes a few minor improvements to the earlier
> accepted TLP Logging code.
>
> v8:
> - Added missing parameter to kerneldoc.
> - Dropp
On Wed, Jan 08, 2025 at 10:54:20AM +0100, Christophe Leroy wrote:
> Since commit 659ad3492b91 ("perf maps: Switch from rbtree to lazily
> sorted array for addresses"), perf doesn't display anymore kernel
> symbols on powerpc, allthough it still detects them as kernel addresses.
>
> # Overhea
On Mon, Jan 06, 2025, Sean Christopherson wrote:
> On Wed, Jan 01, 2025, Paolo Bonzini wrote:
> > kvm_follow_pfn() is able to work with NULL in the .map_writable field
> > of the homonymous struct. But __kvm_faultin_pfn() rejects the combo
> > despite KVM for e500 trying to use it. Indeed .map_wr
On Tue, Jan 07, 2025 at 03:04:40PM -0800, Yury Norov wrote:
> On Tue, Jan 07, 2025 at 02:43:01PM -0800, Yury Norov wrote:
> > On Tue, Jan 07, 2025 at 04:37:17PM -0600, Nick Child wrote:
> > > On Sat, Dec 28, 2024 at 10:49:35AM -0800, Yury Norov wrote:
> > > > A loop based on cpumask_next_wrap() ope
On Wed, Jan 08, 2025 at 01:53:51PM +0900, Akihiko Odaki wrote:
> On 2025/01/08 1:17, Dave Martin wrote:
> > Hi,
> >
> > On Tue, Jan 07, 2025 at 09:45:56PM +0900, Akihiko Odaki wrote:
> > > Use note name macros to match with the userspace's expectation.
> > >
> > > Signed-off-by: Akihiko Odaki
>
Hi,
On Wed, Jan 08, 2025 at 01:34:24PM +0900, Akihiko Odaki wrote:
> On 2025/01/08 1:18, Dave Martin wrote:
> > On Tue, Jan 07, 2025 at 09:45:53PM +0900, Akihiko Odaki wrote:
> > > Use note name macros to match with the userspace's expectation.
> >
> > Also (and more importantly) get rid of dupli
On Wed, Jan 08, 2025 at 01:53:51PM +0900, Akihiko Odaki wrote:
> On 2025/01/08 1:17, Dave Martin wrote:
> > > +#define NT_INIT(buf, type, desc) \
> > > + (nt_init_name((buf), NT_ ## type, &(desc), sizeof(desc), NN_ ## type))
> >
> > Nit: this macro name clashes with the naming scheme in elf.h.
> >
On 08/01/25 17:08, Baoquan he wrote:
On 01/08/25 at 03:44pm, Sourabh Jain wrote:
...snip...
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index f0e9f8eda7a3..407f8b0346aa 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -205,6 +205,15 @@ static inline int
arch_
Hello Baoquan
On 08/01/25 16:55, Baoquan he wrote:
Hi,
On 01/08/25 at 03:44pm, Sourabh Jain wrote:
insert_crashkernel_resources() adds crash memory to iomem_resource if
generic crashkernel reservation is enabled on an architecture.
On PowerPC, system RAM is added to iomem_resource. See commit
On 01/08/25 at 03:44pm, Sourabh Jain wrote:
...snip...
> diff --git a/include/linux/kexec.h b/include/linux/kexec.h
> index f0e9f8eda7a3..407f8b0346aa 100644
> --- a/include/linux/kexec.h
> +++ b/include/linux/kexec.h
> @@ -205,6 +205,15 @@ static inline int
> arch_kimage_file_post_load_cleanup(st
Hi,
On 01/08/25 at 03:44pm, Sourabh Jain wrote:
> insert_crashkernel_resources() adds crash memory to iomem_resource if
> generic crashkernel reservation is enabled on an architecture.
>
> On PowerPC, system RAM is added to iomem_resource. See commit
> c40dd2f766440 ("powerpc: Add System RAM to /
On 01/08/25 at 03:44pm, Sourabh Jain wrote:
> cmdline argument is not used in reserve_crashkernel_generic() so remove
> it. Correspondingly, all the callers have been updated as well.
>
> No functional change intended.
>
> Cc: Andrew Morton
> Cc: Baoquan he
> Cc: Hari Bathini
> CC: Madhavan Sr
On Wed, Jan 8, 2025, at 07:57, Qi Zheng wrote:
> Several architectures (arm, arm64, riscv and x86) define exactly the
> same __tlb_remove_table(), just introduce generic __tlb_remove_table() to
> eliminate these duplications.
>
> The s390 __tlb_remove_table() is nearly the same, so also make s390
>
On Wed, Jan 8, 2025, at 07:57, Qi Zheng wrote:
> From: Kevin Brodsky
>
> Four architectures currently implement 5-level pgtables: arm64,
> riscv, x86 and s390. The first three have essentially the same
> implementation for p4d_alloc_one() and p4d_free(), so we've got an
> opportunity to reduce dup
On 2025-01-08 10:55:04 [+0100], Helge Deller wrote:
> Nice catch.
>
> Acked-by: Helge Deller
>
> This patch really should be backported.
> Can you add a Cc: stable tag?
It should be picked due to the fixes tag. I add it if I am going to
repost it.
> Helge
Sebastian
etext is not used anymore since commit 843a1ffaf6f2 ("powerpc/mm: use
core_kernel_text() helper")
edata and end have not been used since the merge of arch/ppc/ and
arch/ppc64/
Remove the three and remove macro PROVIDE32.
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/vmlinux.lds.S
primary_uic is not used outside uic.c, declare it static.
Reported-by: kernel test robot
Closes:
https://lore.kernel.org/oe-kbuild-all/202411101746.ld8ydvzy-...@intel.com/
Fixes: e58923ed1437 ("[POWERPC] Add arch/powerpc driver for UIC, PPC4xx
interrupt controller")
Signed-off-by: Christophe Le
Since commit 659ad3492b91 ("perf maps: Switch from rbtree to lazily
sorted array for addresses"), perf doesn't display anymore kernel
symbols on powerpc, allthough it still detects them as kernel addresses.
# Overhead Command Shared Object Symbol
# .. .
Rewrite __real_pte() as a static inline in order to avoid
following warning/error when building with 4k page size:
CC arch/powerpc/mm/book3s64/hash_tlb.o
arch/powerpc/mm/book3s64/hash_tlb.c: In function 'hpte_need_flush':
arch/powerpc/mm/book3s64/hash_tlb.c:49:16: er
On PowerPC, the memory reserved for the crashkernel can contain
components like RTAS, TCE, OPAL, etc., which should be avoided when
loading kexec segments into crashkernel memory. Due to these special
components, PowerPC has its own set of functions to locate holes in the
crashkernel memory for loa
Commit 0ab97169aa05 ("crash_core: add generic function to do
reservation") added a generic function to reserve crashkernel memory.
So let's use the same function on powerpc and remove the
architecture-specific code that essentially does the same thing.
The generic crashkernel reservation also prov
Commit 59d58189f3d9 ("crash: fix crash memory reserve exceed system
memory bug") fails crashkernel parsing if the crash size is found to be
higher than system RAM, which makes the memory_limit adjustment code
ineffective due to an early exit from reserve_crashkernel().
Regardless lets not violated
cmdline argument is not used in reserve_crashkernel_generic() so remove
it. Correspondingly, all the callers have been updated as well.
No functional change intended.
Cc: Andrew Morton
Cc: Baoquan he
Cc: Hari Bathini
CC: Madhavan Srinivasan
Cc: Michael Ellerman
Cc: ke...@lists.infradead.org
Commit 0ab97169aa05 ("crash_core: add generic function to do
reservation") added a generic function to reserve crashkernel memory.
So let's use the same function on powerpc and remove the
architecture-specific code that essentially does the same thing.
The generic crashkernel reservation also prov
insert_crashkernel_resources() adds crash memory to iomem_resource if
generic crashkernel reservation is enabled on an architecture.
On PowerPC, system RAM is added to iomem_resource. See commit
c40dd2f766440 ("powerpc: Add System RAM to /proc/iomem").
Enabling generic crashkernel reservation on
Depending on how vmlinux.lds is written, _etext might be the very
first data symbol instead of the very last text symbol.
Don't require it to be a text symbol, accept any symbol type.
Fixes: ed9adb2035b5 ("perf machine: Read also the end of the kernel")
Signed-off-by: Christophe Leroy
---
tools
Since commit 69a87a32f5cd ("perf machine: Include data symbols in the
kernel map"), perf needs _edata symbol.
Make sure it is always included in /proc/kallsyms and not only when
CONFIG_KALLSYMS_ALL is selected.
Signed-off-by: Christophe Leroy
Fixes: 69a87a32f5cd ("perf machine: Include data symb
On 1/8/25 10:04, Sebastian Andrzej Siewior wrote:
dereference_symbol_descriptor() needs to obtain the module pointer
belonging to pointer in order to resolve that pointer.
The returned mod pointer is obtained under RCU-sched/ preempt_disable()
guarantees and needs to be used within this section t
Sometimes certain PCIE devices installed on some servers occasionally
produce large number of AER correctable error logs, which is quite
annoying. Add this sysctl parameter kernel.aer_print_skip_mask to
skip printing AER errors of certain severity.
The AER severity can be 0(NONFATAL), 1(FATAL), 2(
dereference_symbol_descriptor() needs to obtain the module pointer
belonging to pointer in order to resolve that pointer.
The returned mod pointer is obtained under RCU-sched/ preempt_disable()
guarantees and needs to be used within this section to ensure that the
module is not removed in the meant
__module_text_address() can be invoked within a RCU section, there is no
requirement to have preemption disabled.
Replace the preempt_disable() section around __module_text_address()
with RCU.
Cc: Christophe Leroy
Cc: Madhavan Srinivasan
Cc: Mark Rutland
Cc: Masami Hiramatsu
Cc: Michael Eller
On 08/01/2025 07:57, Qi Zheng wrote:
> Convert __tlb_remove_table() to use struct ptdesc, which will help to move
> pagetable_dtor() to __tlb_remove_table().
>
> And page tables shouldn't have swap cache, so use pagetable_free() instead
> of free_page_and_swap_cache() to free page table pages.
>
>
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