syzbot has bisected this issue to:
commit bfd45be0b83e8f711f3abc892850d6047972d127
Author: Christoph Hellwig
Date: Tue Oct 11 20:52:22 2016 +
kprobes: include instead of
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1613329d90
start commit: 98477740 Merge branch
On 27/09/2020 09:28, Jisheng Zhang wrote:
...
> I see, the msi_domain_set_affinity() calls parent->chip->irq_set_affinity
> without checking, grepping the irqchip and pci dir, I found that
> if the MSI is based on some cascaded interrupt mechanism, they all
> point the irq_set_affinity to irq_c
On Mon, Sep 28, 2020 at 5:42 PM Greg KH wrote:
>
> On Mon, Sep 28, 2020 at 03:25:48PM +0530, Kanchan Joshi wrote:
> > Changes since v1:
> > - applied the refactoring suggested by Damien
> >
> > Kanchan Joshi (1):
> > null_blk: synchronization fix for zoned device
> >
> > drivers/block/null_blk.
On Mon, Sep 28, 2020 at 7:14 AM Alan Maguire wrote:
>
>
>
> On Thu, 24 Sep 2020, Alexei Starovoitov wrote:
>
> > to whatever number, but printing single task_struct needs ~800 lines and
> > ~18kbytes. Humans can scroll through that much spam, but can we make it less
> > verbose by default somehow?
On Mon, Sep 28, 2020 at 12:27 AM 'Peter Ujfalusi' via Clang Built
Linux wrote:
>
>
>
> On 27/09/2020 10.27, kernel test robot wrote:
> > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> > master
> > head: a1bffa48745afbb54cb4f873bba783b2ae8be042
> > commit: 6748d0559
On Mon, Sep 28, 2020 at 10:23 AM Peter Xu wrote:
>
> Yes... Actually I am also thinking about the complete solution to cover
> read-only fast-gups too, but now I start to doubt this, at least for the
> fork()
> path. E.g. if we'd finally like to use pte_protnone() to replace the current
> pte_w
Set _err_ to the return error code -EFAULT before jumping to the new
label err_d, so resources for _d_ can be released before returning
from function sun8i_ss_prng_generate().
Addresses-Coverity-ID: 1497459 ("Resource leak")
Fixes: ac2614d721de ("crypto: sun8i-ss - Add support for the PRNG")
Signe
On Mon, 28 Sep 2020, Matt Roper wrote:
> Why are we adding IS_JASPERLAKE at all? EHL/JSL are documented as the
> same graphics IP, but are paired with different PCHs in the final SoCs,
> which is what causes the minor differences in programming. My
> understanding is that the voltage programming
On Thu, Sep 24, 2020 at 12:07:04PM +0100, Alexandru Elisei wrote:
> From: Julien Thierry
>
> kvm_vcpu_kick() is not NMI safe. When the overflow handler is called from
> NMI context, defer waking the vcpu to an irq_work queue.
>
> A vcpu can be freed while it's not running by kvm_destroy_vm(). Pr
On Mon, 2020-09-28 at 19:11 +0200, Julia Lawall wrote:
>
> On Mon, 28 Sep 2020, Joe Perches wrote:
>
> > On Sun, 2020-09-27 at 21:12 +0200, Julia Lawall wrote:
> > > Replace commas with semicolons. What is done is essentially described by
> > > the following Coccinelle semantic patch (http://coc
On Mon, Sep 28, 2020 at 08:14:02PM +0300, Jani Nikula wrote:
> On Mon, 28 Sep 2020, "Surendrakumar Upadhyay, TejaskumarX"
> wrote:
> >
> > From: Jani Nikula
> > Sent: Monday, September 28, 2020 7:07 PM
> > To: Surendrakumar Upadhyay, TejaskumarX
> > ; Vivi, Rodr
On 9/28/20 3:00 AM, Lukas Bulwahn wrote:
> diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
> index c7a47603537f..5632f02146ca 100644
> --- a/arch/x86/mm/init.c
> +++ b/arch/x86/mm/init.c
> @@ -609,7 +609,7 @@ static void __init memory_map_top_down(unsigned long
> map_start,
> step_size
On Mon, Sep 28, 2020 at 5:36 PM David Laight wrote:
>
> From: Dmitry Kasatkin
> > Sent: 28 September 2020 15:03
> >
> > "copy_mount_options" function came to my eyes.
> > It splits copy into 2 pieces - over page boundaries.
> > I wonder what is the real reason for doing this?
> > Original comment
From: Zi Yan
Unmap different subpages in different sized THPs properly in the
try_to_unmap() function. pvmw.pte, pvmw.pmd, pvmw.pud are used to
identify unmapped page sizes:
1. pvmw.pte != NULL: PTE pages or PageHuge.
2. pvmw.pte == NULL and pvmw.pmd != NULL: PMD pages.
3. pvmw.pte == NULL and p
From: Zi Yan
This adds PUD THP support for anonymous pages. Applications will be
able to get PUD pages during page faults when their VMAs are larger than
PUD page size after the page fault path is enabled.
No shared zero PUD THP is created and shared by all read-only zero PUD
THPs, different zer
From: Zi Yan
Sharing hugepage_cma reservation with hugetlb for pud thp allocaiton.
The reserved cma regions still can be used for moveable page allocations.
During 1GB page split, all subpages are cleared from the CMA bitmap,
since they are no more 1GB pages and will be freed via the normal path
From: Zi Yan
page_add_anon_rmap, do_page_add_anon_rmap, page_add_new_anon_rmap,
page_remove_rmap are changed to have page order as a parameter. This
prepares for PMD-mapped PUD THP, since a PUD THP can be mapped in three
different ways, PTEs, PMDs, and PUDs and the original boolean parameter
is n
From: Zi Yan
Since the order of a PUD THP is greater than MAX_ORDER, do not consider
its tail pages corrupted. Also print sub_compound_mapcount when dumping
a PMDPageInPUD.
Signed-off-by: Zi Yan
---
mm/debug.c | 6 +-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/mm/debug.c
From: Zi Yan
The pagewalker runs while only holding the mmap_sem for read. The pud can
be set asynchronously, while also holding the mmap_sem for read.
This follows the same way as the commit:
mm/pagewalk: use READ_ONCE when reading the PUD entry unlocked"
Signed-off-by: Zi Yan
---
fs/proc/ta
From: Zi Yan
As PUD THP is going to be added in the following patches, thp_order and
thp_nr can be HPAGE_PUD_ORDER and HPAGE_PUD_NR, respectively.
Signed-off-by: Zi Yan
---
include/linux/huge_mm.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/huge_mm.h b
From: Zi Yan
User can access the PUD THP size via
`cat /sys/kernel/mm/transparent_hugepage/hpage_pud_size`. This is
similar to make PMD THP size public.
Signed-off-by: Zi Yan
---
Documentation/admin-guide/mm/transhuge.rst | 1 +
mm/huge_memory.c | 13 +
2
From: Zi Yan
This prepares for PUD THP support, which allocates 512 of such PMD pages
when creating a PUD THP. These page table pages will be withdrawn during
THP split.
Signed-off-by: Zi Yan
---
arch/x86/include/asm/pgalloc.h | 60 ++
arch/x86/mm/pgtable.c
From: Zi Yan
Preallocated 513 (1 PMD and 512 PTE) page table pages need to be freed
when PUD THP is removed. zap_pud_deposited_table is added to perform the
action.
Signed-off-by: Zi Yan
---
mm/huge_memory.c | 48 +---
1 file changed, 45 insertions(+
From: Zi Yan
The old design uses the double linked list page->lru to chain all
deposited page table pages when creating a THP and page->pmd_huge_pte
to point to the first page of the list. As the second pointer in
page->lru overlaps with page->pmd_huge_pte, the design prevents
multi-level page ta
From: Zi Yan
COW on PUD THPs has the same behavior as COW on PMD THPs to avoid high
COW overhead. As a result, do_huge_pmd_wp will see PMD-mapped PUD THPs,
thus needs to count PUD mappings in total mapcount when calling
page_trans_huge_map_swapcount in reuse_swap_page to avoid false positive.
Cha
From: Zi Yan
We deposit 512 PMD pages, each of which has 512 PTE pages deposited in
its ->deposit_head, to mm->deposit_head_pud. They will be withdrawn and
used when a PUD THP split into 512 PMD THPs. In this way, when any of
the 512 PMD THPs is split further, we will use the existing code path t
From: Zi Yan
It mimics PMD-level THP split. In addition, to support PMD-mapped PUD
THP, PMDPageInPUD() is added to identify the first page in the PMD sized
aligned physical pages. For example, in x86_64, the page[0], page[512],
page[1024], ... are regarded as PMDPageInPUD.
For the mapcount of PM
From: Zi Yan
madvise can set this bit via MADV_HUGEPAGE | MADV_HUGEPAGE_1GB and unset
it via MADV_NOHUGEPAGE | MADV_HUGEPAGE_1GB. Later, kernel will check
this bit to decide whether to allocate PUD THPs or not on a VMA when the
global PUD THP is set to madvise.
Signed-off-by: Zi Yan
---
includ
From: Zi Yan
Add PUD-level TLB flush ops and teach page_vma_mapped_talk about PUD
THPs.
Signed-off-by: Zi Yan
---
arch/x86/include/asm/pgtable.h | 3 +++
arch/x86/mm/pgtable.c | 13 +
include/linux/mmu_notifier.h | 13 +
include/linux/pgtable.h| 14 +
From: Jason Gunthorpe
The pagewalker runs while only holding the mmap_sem for read. The pud can
be set asynchronously, while also holding the mmap_sem for read
eg from:
handle_mm_fault()
__handle_mm_fault()
create_huge_pmd()
dev_dax_huge_fault()
__dev_dax_pud_fault()
vmf_in
From: Zi Yan
When PUD mapping is gone, there is no need to keep the PUD THP. Add it
to deferred split list, so when memory pressure comes, the THP will be
split.
Signed-off-by: Zi Yan
---
mm/rmap.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/mm/rmap.c b/mm/rmap.c
index b4950f7a0978.
From: Zi Yan
Add follow_page support for PUD THPs.
Signed-off-by: Zi Yan
---
include/linux/huge_mm.h | 11 +++
mm/gup.c| 60 -
mm/huge_memory.c| 73 -
3 files changed, 142 insertions(+), 2 delet
From: Zi Yan
All previous commits have anonymous PUD THP support ready, so we can
enable anonymous PUD THP page fault now.
Signed-off-by: Zi Yan
---
mm/memory.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/mm/memory.c b/mm/memory.c
index 9f7b509a3aa7..dc285d9872fc 1
From: Zi Yan
copy_huge_pud needs to allocate 1 PMD page table page and 512 PTE page
table pages and deposit them when copying a PUD THP. It is similar to
what we do at PUD THP page faults.
Signed-off-by: Zi Yan
---
mm/huge_memory.c | 36
1 file changed, 28
From: Zi Yan
pagemap_pud_range is added to print pud page flags properly.
Signed-off-by: Zi Yan
---
fs/proc/task_mmu.c | 63 ++
1 file changed, 63 insertions(+)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 077196182288..04a3158d0d5b 10
From: Zi Yan
It will be used by other allocations, like 1GB THP allocation in the
upcoming commit.
Signed-off-by: Zi Yan
---
.../admin-guide/kernel-parameters.txt | 2 +-
arch/arm64/mm/hugetlbpage.c | 2 +-
arch/powerpc/mm/hugetlbpage.c | 2 +-
arch
From: Zi Yan
We now have PMD-mapped PUD THP and PTE-mapped PUD THP, page_vma_walk
should handle them properly.
Signed-off-by: Zi Yan
---
mm/page_vma_mapped.c | 152 +--
1 file changed, 118 insertions(+), 34 deletions(-)
diff --git a/mm/page_vma_mapped.c
From: Zi Yan
When PMD-mapped PUD THP is enabled by the upcoming commits, we can unmap
a PMD-mapped PUD THP that should be counted as NR_ANON_THPS. The added
map_order tells us about this situation.
Signed-off-by: Zi Yan
---
mm/rmap.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
From: Zi Yan
We cannot swap PUD THPs, so split them before swap them out. PUD THPs
will be split into PMD THPs, so that if THP_SWAP is enabled, PMD THPs
can be swapped out as a whole.
Signed-off-by: Zi Yan
---
mm/swap_slots.c | 2 ++
mm/vmscan.c | 33 +++--
2 f
From: Zi Yan
Hi all,
This patchset adds support for 1GB PUD THP on x86_64. It is on top of
v5.9-rc5-mmots-2020-09-18-21-23. It is also available at:
https://github.com/x-y-z/linux-1gb-thp/tree/1gb_thp_v5.9-rc5-mmots-2020-09-18-21-23
Other than PUD THP, we had some discussion on generating THPs
From: Zi Yan
Like the existing global PMD THP knob, it allows user to enable/disable
PUD THPs. PUD THP is disabled by default unless user knows the
performance tradeoff of using it, like longer first time page fault
due to larger page zeroing and longer page allocation time when memory
is fragmen
From: Zi Yan
Bit 27 is used to identify PUD THP.
Signed-off-by: Zi Yan
---
fs/proc/page.c | 2 ++
include/uapi/linux/kernel-page-flags.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/fs/proc/page.c b/fs/proc/page.c
index f3b39a7d2bf3..e4e2ad3612c9 100644
--- a/f
> On Sep 28, 2020, at 1:55 AM, Feng Tang wrote:
>
> Hi Nick,
>
> 0day has found some kernel decomprssion failure case since 5.9-rc1 (X86_32
> build), and it could be related with ZSTD code, though initially we bisected
> to some other commits.
>
> The error messages are:
>
> ea
On 9/28/2020 1:15 PM, Kuppuswamy, Sathyanarayanan wrote:
> Since there is no state restoration for FATAL errors, I am wondering
> whether
> calls to ->error_detected(), ->mmio_enabled() and ->slot_reset() are
> required?
Good question,
Initially when we started, we were trying to handle both NON_
From: Zi Yan
Signed-off-by: Zi Yan
---
fs/proc/task_mmu.c | 68 ++
1 file changed, 63 insertions(+), 5 deletions(-)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index a21484b1414d..077196182288 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/ta
On Sun, 27 Sep 2020 18:05:13 +0200, Ansuel Smith wrote:
> Document dedicated L2 Krait CPU Cache devfreq scaling driver.
>
> Signed-off-by: Ansuel Smith
> ---
> .../bindings/devfreq/krait-cache-devfreq.yaml | 77 +++
> 1 file changed, 77 insertions(+)
> create mode 100644
> Docu
From: Zi Yan
It allows user to specify up to what page size kernel will generate THPs
to back up the memory range in madvise. Because we now have PMD and PUD
THPs, they require different amount of kernel effort to be generated,
and we want to prevent user from getting long page fault latency if w
On Mon, Sep 28, 2020 at 12:33:37AM +0800, Hui Su wrote:
> As the comments said, if @addr is NULL, no operation
> is performed, check the addr first in vfree() and
> vfree_atomic() maybe a better choice.
I don't see how this change helps anything. kmemleak_free() checks addr so no
danger there. A
On Sun, Sep 27, 2020 at 08:46:30PM +0900, Tetsuo Handa wrote:
> VT_RESIZEX was introduced in Linux 1.3.3, but it is unclear that what
> comes to the "+ more" part, and I couldn't find a user of VT_RESIZEX.
>
It seems this is/was used by "svgatextmode" which seems to be at
http://www.ibiblio.org/p
On Mon, Sep 28, 2020 at 10:52:54AM -0700, Nick Desaulniers wrote:
> On Mon, Sep 28, 2020 at 12:27 AM 'Peter Ujfalusi' via Clang Built
> > Right, in the attached .config:
> > # CONFIG_OF is not set
> > There must be a clean way to handle this without extensive ifedfery...
> Pretty sure I just saw
On Sun, Sep 27, 2020 at 06:05:13PM +0200, Ansuel Smith wrote:
> Document dedicated L2 Krait CPU Cache devfreq scaling driver.
>
> Signed-off-by: Ansuel Smith
> ---
> .../bindings/devfreq/krait-cache-devfreq.yaml | 77 +++
> 1 file changed, 77 insertions(+)
> create mode 100644
On Mon, Sep 28, 2020 at 9:44 AM Andrew Cooper wrote:
>
> On 28/09/2020 01:58, Jarkko Sakkinen wrote:
> > On Fri, Sep 25, 2020 at 07:23:59PM +0100, Andrew Cooper wrote:
> >> On 15/09/2020 12:28, Jarkko Sakkinen wrote:
> >>> diff --git a/arch/x86/entry/vdso/vsgx_enter_enclave.S
> >>> b/arch/x86/ent
FEDERAL RESERVE BANK OF NEW YORK
ADDRESS: 33 LIBERTY STREET,
NEW YORK, N.Y 10038.
ATTN: FUND BENEFICIARY,
Re: ATM Card payment notification.
This is to officially inform you that the bank Federal Reserve Board
New York Branch has concluded in the meeting today over your long
o
On Mon, 28 Sep 2020 10:05:31 +0900, Kunihiko Hayashi wrote:
> In the dt-bindings, "atu" reg-names is required to get the register space
> for iATU in Synopsis DWC version 4.80 or later.
>
> Signed-off-by: Kunihiko Hayashi
> ---
> Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.y
On Mon, 28 Sep 2020 10:45:37 +0530, Varadarajan Narayanan wrote:
> Add device tree binding Documentation details for ipq5018
> pinctrl driver.
>
> Signed-off-by: Varadarajan Narayanan
> ---
> .../bindings/pinctrl/qcom,ipq5018-pinctrl.yaml | 143
> +
> 1 file changed, 143
Hello,
syzbot found the following issue on:
HEAD commit:c9c9e6a4 Merge tag 'trace-v5.9-rc5-2' of git://git.kernel...
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=138b09d990
kernel config: https://syzkaller.appspot.com/x/.config?x=5f4c828c9e3cef97
das
On Mon, Sep 28, 2020 at 02:39:50PM +0800, Chunfeng Yun wrote:
> Add some optional properties which are needed for hard wired devices
>
> Signed-off-by: Chunfeng Yun
> ---
> Documentation/devicetree/bindings/usb/usb-hcd.yaml | 11 +++
> 1 file changed, 11 insertions(+)
>
> diff --git a/D
On Mon, Sep 28, 2020 at 11:08 AM H.J. Lu wrote:
>
> On Mon, Sep 28, 2020 at 9:44 AM Andrew Cooper
> wrote:
> >
> > On 28/09/2020 01:58, Jarkko Sakkinen wrote:
> > > On Fri, Sep 25, 2020 at 07:23:59PM +0100, Andrew Cooper wrote:
> > >> On 15/09/2020 12:28, Jarkko Sakkinen wrote:
> > >>> diff --gi
On 14/09/20 7:49 PM, Necip Fazil Yildiran wrote:
> When MACH_DAVINCI_DA830_EVM is enabled and GPIOLIB is disabled, it results
> in the following Kbuild warning:
>
> WARNING: unmet direct dependencies detected for GPIO_PCF857X
> Depends on [n]: GPIOLIB [=n] && I2C [=y]
> Selected by [y]:
> -
On Mon, 28 Sep 2020 14:39:50 +0800, Chunfeng Yun wrote:
> Add some optional properties which are needed for hard wired devices
>
> Signed-off-by: Chunfeng Yun
> ---
> Documentation/devicetree/bindings/usb/usb-hcd.yaml | 11 +++
> 1 file changed, 11 insertions(+)
>
My bot found errors
On Mon, 28 Sep 2020 17:44:18 +0800, Rahul Tanwar wrote:
> PVT controller (MR75203) is used to configure & control
> Moortec embedded analog IP which contains temprature sensor(TS),
> voltage monitor(VM) & process detector(PD) modules.
>
> Add DT bindings schema for PVT controller.
>
> Signed-off-
On Mon, Sep 28, 2020 at 10:53:50AM -0500, Yazen Ghannam wrote:
> I don't have any clear reasons. I just get vague use cases sometimes
> about not using EDAC and relying on other things. But it shouldn't hurt
> to have the module load anyway. The EDAC messages can be suppressed, and
> the sysfs inte
After a length git bisection, I determined the commit that introduced
a change that ultimately caused a bug/oops null dereference (see below
for relevant syslog entries) was 008cfe4418b3dbda2ff.. (mm: Introduce
mm_struct.has_pinned)
The RIP (according to syslog) occurs in function
`__get_user_page
On Mon, Sep 28, 2020 at 05:44:18PM +0800, Rahul Tanwar wrote:
> PVT controller (MR75203) is used to configure & control
> Moortec embedded analog IP which contains temprature sensor(TS),
> voltage monitor(VM) & process detector(PD) modules.
>
> Add DT bindings schema for PVT controller.
>
> Signe
The pull request you sent on Mon, 28 Sep 2020 17:27:14 +:
> git://git.linux-nfs.org/projects/trondmy/linux-nfs.git tags/nfs-for-5.9-3
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/fb0155a09b0224a7147cb07a4ce6034c8d29667f
Thank you!
--
Deet-doot-dot, I am a bot.
On 9/28/20 11:12 AM, Andy Lutomirski wrote:
>> endbr64
>> /* Check if shadow stack is in use. NB: R11 is the only usable
>>scratch register for function calls. */
>> xorl %r11d, %r11d
>> rdsspq %r11
>> testq %r11, %r11
>> jnz 3f
>> call 2f
>> 1:
>> pause
>> lfence
>> jmp 1b
>> 2:
>> mov %rax,
On Mon, Sep 28, 2020 at 09:00:54PM +0300, Dmitry Kasatkin wrote:
> But why "we" should allow "discarding" failed part instead of failing
> with EFAULT as a whole?
Because there might very well be absolutely legitimate users of mount(2)
passing it something smaller than 4Kb immediately followed by
Hi all,
I'm reporting the following bug detected by Coverity:
The _scalar_copied_ variable is set to 0 at
lib/mpi/ec.c:1255:
1255 int scalar_copied = 0;
and it is never updated before reaching the code below:
lib/mpi/ec.c:1317
1317 if (scalar_copied)
On Thu, 24 Sep 2020 16:42:31 +0800, Ramuthevar,Vadivel MuruganX wrote:
> From: Ramuthevar Vadivel Murugan
>
> Add YAML file for dt-bindings to support NAND Flash Controller
> on Intel's Lightning Mountain SoC.
>
> Signed-off-by: Ramuthevar Vadivel Murugan
>
> ---
> .../devicetree/bindings/mtd
Let's prepare for additional flags and avoid long parameter lists of bools.
Follow-up patches will also make use of the flags in __free_pages_ok(),
however, I wasn't able to come up with a better name for the type - should
be good enough for internal purposes.
Reviewed-by: Alexander Duyck
Reviewe
__free_pages_core() is used when exposing fresh memory to the buddy
during system boot and when onlining memory in generic_online_page().
generic_online_page() is used in two cases:
1. Direct memory onlining in online_pages().
2. Deferred memory onlining in memory-ballooning-like mechanisms (Hype
__putback_isolated_page() already documents that pages will be placed to
the tail of the freelist - this is, however, not the case for
"order >= MAX_ORDER - 2" (see buddy_merge_likely()) - which should be
the case for all existing users.
This change affects two users:
- free page reporting
- page
When adding separate memory blocks via add_memory*() and onlining them
immediately, the metadata (especially the memmap) of the next block will be
placed onto one of the just added+onlined block. This creates a chain
of unmovable allocations: If the last memory block cannot get
offlined+removed() s
Page isolation doesn't actually touch the pages, it simply isolates
pageblocks and moves all free pages to the MIGRATE_ISOLATE freelist.
We already place pages to the tail of the freelists when undoing
isolation via __putback_isolated_page(), let's do it in any case
(e.g., if order <= pageblock_or
As we no longer shuffle via generic_online_page() and when undoing
isolation, we can simplify the comment.
We now effectively shuffle only once (properly) when onlining new
memory.
Cc: Andrew Morton
Cc: Alexander Duyck
Cc: Mel Gorman
Cc: Michal Hocko
Cc: Dave Hansen
Cc: Vlastimil Babka
Cc:
On Mon, 28 Sep 2020, Jarkko Sakkinen wrote:
> That's a good guess. Just a bit confused how that particular patch can
> have the effect: it has two deferences to efispecid instead of one in
> the same statement. Would be interesting to hear if the bug is triggered
> in Kenneth's environment by th
>From Harvey Terence (Mr.)
25 Canada Square, Canary Wharf, London E14 5LB,
Good day
I am Mr. Harvey Terence, Operating Officer of this bank. I am assuring
you that with your honest assistance and joint effort we can complete
this life time transaction within 7/14 working days.
I need a reliable
On 9/28/2020 2:02 PM, Sinan Kaya wrote:
> Since there is no state restoration for FATAL errors, I am wondering
> whether
> calls to ->error_detected(), ->mmio_enabled() and ->slot_reset() are
> required?
I also would like to ask someone closer to the spec language double
check this.
When we recov
On Fri, Sep 11, 2020 at 03:51:09PM -0600, Rob Herring wrote:
> From: Raphael Gault
>
> This patch introduces a protection for the userspace processes which are
> trying to access the registers from the pmu registers on a big.LITTLE
> environment. It introduces a hook to handle undefined instructi
On Thu, Sep 24, 2020 at 03:17:53PM +0800, Zhen Lei wrote:
> Convert the Synopsys DesignWare APB interrupt controller (dw_apb_ictl)
> binding to DT schema format using json-schema.
>
> Signed-off-by: Zhen Lei
> ---
> .../interrupt-controller/snps,dw-apb-ictl.txt | 43 -
> .../int
On Mon, 21 Sep 2020 19:24:00 +0800, Gene Chen wrote:
> From: Gene Chen
>
> This change adds the binding doc for the MT6360 ADC.
>
> Signed-off-by: Gene Chen
> ---
> .../bindings/iio/adc/mediatek,mt6360-adc.yaml | 34
> ++
> 1 file changed, 34 insertions(+)
> create m
On Mon, 21 Sep 2020 17:39:36 +0300, Roger Quadros wrote:
> There are 4 lanes in each J7200 SERDES. Each SERDES lane mux can
> select upto 4 different IPs. Define all the possible functions.
>
> Cc: Peter Rosin
> Signed-off-by: Roger Quadros
> ---
> include/dt-bindings/mux/ti-serdes.h | 22 +
On 9/28/20 11:25 AM, Sinan Kaya wrote:
On 9/28/2020 2:02 PM, Sinan Kaya wrote:
Since there is no state restoration for FATAL errors, I am wondering
whether
calls to ->error_detected(), ->mmio_enabled() and ->slot_reset() are
required?
I also would like to ask someone closer to the spec lang
On 9/24/20 12:17 AM, Zhen Lei wrote:
> xxx/arc/boot/dts/axs101.dt.yaml: dw-apb-ictl@e0012000: $nodename:0: \
> 'dw-apb-ictl@e0012000' does not match '^interrupt-controller(@[0-9a-f,]+)*$'
> From schema: xxx/interrupt-controller/snps,dw-apb-ictl.yaml
>
> The node name of the interrupt controller mu
On Tue, Sep 29 2020 at 01:11, Hillf Danton wrote:
> On Mon, 28 Sep 2020 18:13:42 +0200 Thomas Gleixner wrote:
>> So the timer was armed at some point and then the expiry which does the
>> forward races with the ioctl which starts the timer. Lack of
>> serialization or such ...
>
> To make syzbot ha
If we have isolated CPUs designated to perform real-time tasks, to keep the
latency overhead to a minimum for real-time CPUs IRQ vectors are moved to
housekeeping CPUs from the userspace. Creating MSIX vectors only based on
the online CPUs could lead to exhaustion of housekeeping CPU IRQ vectors in
This is a follow-up posting for "[PATCH v3 0/4] isolation: limit msix vectors
to housekeeping CPUs".
Issue
=
With the current implementation device drivers while creating their MSIX
vectors only take num_online_cpus() into consideration which works quite well
for a non-RT environment
Extend nohz_full feature set to include isolation from managed IRQS. This
is required specifically for setups that only uses nohz_full and still
requires isolation for maintaining lower latency for the listed CPUs.
Suggested-by: Frederic Weisbecker
Signed-off-by: Nitesh Narayan Lal
---
kernel/s
If we have isolated CPUs dedicated for use by real-time tasks, we try to
move IRQs to housekeeping CPUs from the userspace to reduce latency
overhead on the isolated CPUs.
If we allocate too many IRQ vectors, moving them all to housekeeping CPUs
may exceed per-CPU vector limits.
When we have isol
Introduce a new API housekeeping_num_online_cpus(), that can be used to
retrieve the number of online housekeeping CPUs based on the housekeeping
flag passed by the caller.
Some of the consumers for this API are the device drivers that were
previously relying only on num_online_cpus() to determine
On Mon, Sep 28, 2020 at 10:54:28AM -0700, Linus Torvalds wrote:
> On Mon, Sep 28, 2020 at 10:23 AM Peter Xu wrote:
> >
> > Yes... Actually I am also thinking about the complete solution to cover
> > read-only fast-gups too, but now I start to doubt this, at least for the
> > fork()
> > path. E.
Map the address to my private mail, because my Marvell account has been
suspended.
Signed-off-by: Mark Starovoytov
---
.mailmap | 1 +
1 file changed, 1 insertion(+)
diff --git a/.mailmap b/.mailmap
index a780211468e4..f7bd4ee8c4b9 100644
--- a/.mailmap
+++ b/.mailmap
@@ -195,6 +195,7 @@ Macie
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any
issue:
Reported-and-tested-by: syzbot+81b3883093f772add...@syzkaller.appspotmail.com
Tested on:
commit: fad8e0de io_uring: fix potential ABBA deadlock in ->show_f..
git tree: git://git.kernel.dk/li
On Wed, Sep 23, 2020 at 08:50:51PM +0800, Gene Chen wrote:
> From: Gene Chen
>
> Add bindings document for LED support on MT6360 PMIC
>
> Signed-off-by: Gene Chen
> ---
> .../devicetree/bindings/leds/leds-mt6360.yaml | 107
> +
> 1 file changed, 107 insertions(+)
> c
The convention for node names is to use hyphens, not underscores.
dtschema expects GPIO hogs to end with 'hog' suffix. Adjust the example
DTS in the binding. No changes to binding itself.
Reported-by: Rob Herring
Signed-off-by: Krzysztof Kozlowski
---
Documentation/devicetree/bindings/pinctrl
On Wed, 23 Sep 2020 17:21:26 +0200, Krzysztof Kozlowski wrote:
> Add bindings for the IMX258 camera sensor. The bindings, just like the
> driver, are quite limited, e.g. do not support regulator supplies.
>
> Signed-off-by: Krzysztof Kozlowski
>
> ---
>
> Changes since v3:
> 1. Document also t
On Wed, 23 Sep 2020 10:24:15 -0500, Ricardo Rivera-Matos wrote:
> Add the bindings for the bq256xx series of battery charging ICs.
>
> Datasheets:
> - https://www.ti.com/lit/ds/symlink/bq25600.pdf
> - https://www.ti.com/lit/ds/symlink/bq25601.pdf
> - https://www.ti.com/lit/ds/symlink/bq25600d.pdf
On Mon 28 Sep 00:15 CDT 2020, Varadarajan Narayanan wrote:
> diff --git a/drivers/pinctrl/qcom/pinctrl-ipq5018.c
> b/drivers/pinctrl/qcom/pinctrl-ipq5018.c
[..]
> +static const struct msm_function ipq5018_functions[] = {
[..]
> + FUNCTION(qspi_clk),
> + FUNCTION(qspi_cs),
> + FUNCTION(
On Mon, Sep 28, 2020 at 10:13:55AM -0700, Matthias Kaehlcke wrote:
> The main issue this driver addresses is that a USB hub needs to be
> powered before it can be discovered. For discrete onboard hubs (an
> example for such a hub is the Realtek RTS5411) this is often solved
> by supplying the hub w
On 9/25/20 6:28 PM, Anchal Agarwal wrote:
> On Fri, Sep 25, 2020 at 04:02:58PM -0400, boris.ostrov...@oracle.com wrote:
>> CAUTION: This email originated from outside of the organization. Do not
>> click links or open attachments unless you can confirm the sender and know
>> the content is safe
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