On 7/31/24 8:31 AM, Nysal Jan K.A. wrote:
> From: "Nysal Jan K.A"
>
> If a core is offline then enabling SMT should not online CPUs of
> this core. By enabling SMT, what is intended is either changing the SMT
> value from "off" to "on" or setting the SMT level (threads per core) from a
> lower
On 7/31/24 8:31 AM, Nysal Jan K.A. wrote:
> From: "Nysal Jan K.A"
>
> topology_is_core_online() checks if the core a CPU belongs to
> is online. The core is online if at least one of the sibling
> CPUs is online. The first CPU of an online core is also online
> in the common case, so this shou
From: "Nysal Jan K.A"
topology_is_core_online() checks if the core a CPU belongs to
is online. The core is online if at least one of the sibling
CPUs is online. The first CPU of an online core is also online
in the common case, so this should be fairly quick.
Signed-off-by: Nysal Jan K.A
---
a
From: "Nysal Jan K.A"
After the addition of HOTPLUG_SMT support for PowerPC [1] there was a
regression reported [2] when enabling SMT. On a system with at least
one offline core, when enabling SMT, the expectation is that no CPUs
of offline cores are made online.
On a POWER9 system with 4 cores
From: "Nysal Jan K.A"
If a core is offline then enabling SMT should not online CPUs of
this core. By enabling SMT, what is intended is either changing the SMT
value from "off" to "on" or setting the SMT level (threads per core) from a
lower to higher value.
On PowerPC the ppc64_cpu utility can b
The variable savedbitclkrate is assigned and never used, so can be removed.
sound/soc/fsl/lpc3xxx-i2s.c:42:13: warning: variable ‘savedbitclkrate’ set but
not used [-Wunused-but-set-variable]
Fixes: 0959de657a10 ("ASoC: fsl: Add i2s and pcm drivers for LPC32xx CPUs")
Signed-off-by: Yue Haibing
On Tue, Jul 30, 2024, Paolo Bonzini wrote:
> An interesting evolution of the API could be to pass a struct kvm_follow_pfn
> pointer to {,__}kvm_faultin_pfn() and __gfn_to_page() (the "constructors");
> and on the other side to kvm_release_faultin_page() and
> kvm_release_page_*(). The struct kvm_f
On Tue, Jul 30, 2024, Paolo Bonzini wrote:
> On 7/27/24 01:52, Sean Christopherson wrote:
> > Now that KVM no longer relies on an ugly heuristic to find its struct page
> > references, i.e. now that KVM can't get false positives on VM_MIXEDMAP
> > pfns, remove KVM's hack to elevate the refcount for
On Tue, Jul 30, 2024, Paolo Bonzini wrote:
> On 7/27/24 01:51, Sean Christopherson wrote:
> > Add a kvm_follow_pfn() wrapper, kvm_lookup_pfn(), to allow looking up a
> > gfn=>pfn mapping without the caller getting a reference to any underlying
> > page. The API will be used in flows that want to k
On Tue, Jul 30, 2024, Paolo Bonzini wrote:
> On 7/27/24 01:51, Sean Christopherson wrote:
> > Provide the "struct page" associated with a guest_memfd pfn as an output
> > from __kvm_gmem_get_pfn() so that KVM guest page fault handlers can
>
>
> Just "kvm_gmem_get_pfn()"
On Mon, Jul 29, 2024 at 03:11:42PM -0400, Frank Li wrote:
> Convert dt-binding rcpm from txt to yaml format.
> Add fsl,ls1028a-rcpm compatible string.
>
> Signed-off-by: Frank Li
> ---
> .../bindings/rtc/fsl,ls-ftm-alarm.yaml| 2 +-
> .../devicetree/bindings/soc/fsl/fsl,rcpm.yaml | 91 +
On Mon, Jul 29, 2024 at 04:20:52PM +0200, Herve Codina wrote:
> Add support for the QMC (QUICC Multichannel Controller) available in
> some PowerQUICC SoC that uses a QUICC Engine (QE) block such as MPC8321.
>
> This QE QMC is similar to the CPM QMC except that it uses UCCs (Unified
> Communicatio
On Mon, Jul 29, 2024 at 04:20:36PM +0200, Herve Codina wrote:
> Add support for the time slot assigner (TSA) available in some
> PowerQUICC SoC that uses a QUICC Engine (QE) block such as MPC8321.
>
> This QE TSA is similar to the CPM TSA except that it uses UCCs (Unified
> Communication Controlle
On Tue, Jul 30, 2024, Paolo Bonzini wrote:
> On 7/27/24 01:51, Sean Christopherson wrote:
> > Move KVM x86's helper that "finishes" the faultin process to common KVM
> > so that the logic can be shared across all architectures. Note, not all
> > architectures implement a fast page fault path, but
Migrate tasklet APIs to the new bottom half workqueue mechanism. It
replaces all occurrences of tasklet usage with the appropriate workqueue
APIs throughout the ibmvnic driver. This transition ensures compatibility
with the latest design and enhances performance.
Signed-off-by: Allen Pais
---
dr
6.10-stable review patch. If anyone has any objections, please let me know.
--
From: Athira Rajeev
[ Upstream commit b0979f008f1352a44cd3c8877e3eb8a1e3e1c6f3 ]
Perf test for perf probe of function from different CU fails
as below:
./perf test -vv "test perf probe of f
6.1-stable review patch. If anyone has any objections, please let me know.
--
From: Spoorthy S
[ Upstream commit 1bb17b4c6c91ad4d9468247cf5f5464fa6440668 ]
Running shellcheck -S on test_arm_calligraph_fp throws warnings SC2086 and
SC3049,
$shellcheck -S warning tests/s
On Thu, Jul 25, 2024 at 02:49:01PM +0300, Baruch Siach wrote:
> Hi Catalin,
>
> On Tue, Jun 18 2024, Catalin Marinas wrote:
> > On Tue, Apr 09, 2024 at 09:17:55AM +0300, Baruch Siach wrote:
> >> of_dma_get_max_cpu_address() returns the highest CPU address that
> >> devices can use for DMA. The imp
On Mon, Jul 29, 2024 at 07:12:08PM -0700, Nathan Chancellor wrote:
> > | ~~ ^~~~
> >include/linux/dma-mapping.h:77:40: note: expanded from macro
> > 'DMA_BIT_MASK'
> > 77 | #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1UL
On 7/30/24 10:43, Jeff Johnson wrote:
Fix the 'make W=1' warning:
WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/locking/test-ww_mutex.o
Signed-off-by: Jeff Johnson
---
kernel/locking/test-ww_mutex.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/locking/test-ww_mutex
With ARCH=powerpc, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in
drivers/cpufreq/ppc-cbe-cpufreq.o
WARNING: modpost: missing MODULE_DESCRIPTION() in
drivers/cpufreq/powernv-cpufreq.o
Add the missing invocation of the MODULE_DESCRIPTION() macro to al
t-cf.c | 3 ++-
drivers/fsi/fsi-master-gpio.c | 1 +
drivers/fsi/fsi-master-hub.c | 1 +
drivers/fsi/fsi-scom.c| 1 +
kernel/locking/test-ww_mutex.c| 1 +
14 files changed, 15 insertions(+), 1 deletion(-)
---
base-commit: 94ede2a3e9135764736221c080ac7c0ad99
Fix the 'make W=1' warning:
WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/locking/test-ww_mutex.o
Signed-off-by: Jeff Johnson
---
kernel/locking/test-ww_mutex.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/locking/test-ww_mutex.c b/kernel/locking/test-ww_mutex.c
index 78
make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-core.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-master-hub.o
WARNING: modpost: missing MODULE_DESCRIPTION() in
drivers/fsi/fsi-master-aspeed.o
WARNING: modpost: mis
Fix the following 'make W=1' warning:
WARNING: modpost: missing MODULE_DESCRIPTION() in arch/x86/mm/testmmiotrace.o
Signed-off-by: Jeff Johnson
---
arch/x86/mm/testmmiotrace.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/mm/testmmiotrace.c b/arch/x86/mm/testmmiotrace.c
index bda
With ARCH=arm and CONFIG_KERNEL_MODE_NEON=y, make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in arch/arm/lib/xor-neon.o
Add the missing invocation of the MODULE_DESCRIPTION() macro.
Signed-off-by: Jeff Johnson
---
arch/arm/lib/xor-neon.c | 1 +
1 file changed, 1 insertion(+
On 7/23/24 21:32, Ian Rogers wrote:
> On Mon, Jul 22, 2024 at 10:27 PM Kajol Jain wrote:
>>
>> Update JSON/events for power10 platform with additional events.
>> Also move PM_VECTOR_LD_CMPL event from others.json to
>> frontend.json file.
>>
>> Signed-off-by: Kajol Jain
>
> Reviewed-by: Ian R
On 7/23/24 12:35, Disha Goel wrote:
> On 23/07/24 10:51 am, Kajol Jain wrote:
>
>> Update JSON/events for power10 platform with additional events.
>> Also move PM_VECTOR_LD_CMPL event from others.json to
>> frontend.json file.
>>
>> Signed-off-by: Kajol Jain
>
> I have tested the patch on pow
On 7/27/24 01:51, Sean Christopherson wrote:
arm64 folks, the first two patches are bug fixes, but I have very low
confidence that they are correct and/or desirable. If they are more or
less correct, I can post them separately if that'd make life easier. I
included them here to avoid conflicts,
On 7/27/24 01:52, Sean Christopherson wrote:
Now that KVM no longer relies on an ugly heuristic to find its struct page
references, i.e. now that KVM can't get false positives on VM_MIXEDMAP
pfns, remove KVM's hack to elevate the refcount for pfns that happen to
have a valid struct page. In addi
On 7/27/24 01:51, Sean Christopherson wrote:
Add a kvm_follow_pfn() wrapper, kvm_lookup_pfn(), to allow looking up a
gfn=>pfn mapping without the caller getting a reference to any underlying
page. The API will be used in flows that want to know if a gfn points at
a valid pfn, but don't actually
BTW, the patchset based on the latest
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm mm-unstable branch.
On 7/30/24 2:46 PM, al...@kernel.org wrote:
> From: Alex Shi
>
> We have struct ptdesc for page table descriptor a year ago, but it
> has no much usages in kernel, while pgtable_t is
From: Alex Shi
pass ptdesc in pte_free_defer() and use ptdesc in collapse_huge_page().
This patch is immature, there is a issue from pmd_pgtable() conversion
in few archs. The problem need a fix.
Signed-off-by: Alex Shi
Cc: linux...@kvack.org
Cc: linux-s...@vger.kernel.org
Cc: linux-ker...@vge
From: Alex Shi
vmfs.prealloc_pte is a pointer to page table memory, so converter it to
struct ptdesc pointer.
Signed-off-by: Alex Shi
Cc: linux-fsde...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Cc: linux...@kvack.org
Cc: Matthew Wilcox
Cc: Andrew Morton
---
include/linux/mm.h | 2 +-
From: Alex Shi
A new step to replace pgtable_t by ptdesc, also a preparation to change
vmf.prealloc_pte to ptdesc too.
Signed-off-by: Alex Shi
Cc: linux-ker...@vger.kernel.org
Cc: linux...@kvack.org
Cc: linux-fsde...@vger.kernel.org
Cc: Andrew Morton
Cc: Matthew Wilcox
---
mm/filemap.c | 2
From: Alex Shi
Pass struct ptdesc to pmd_populate to further replace pgtable_t.
We use type casting instead of page_ptdesc() helper since different arch
has different type of pgtable_t.
Helper ptdesc_pfn used for arch openrisc and hexagon.
Signed-off-by: Alex Shi
Cc: linux...@kvack.org
Cc: lin
From: Alex Shi
A step to replace pgtable_t to struct ptdesc.
Signed-off-by: Alex Shi
Cc: linux...@kvack.org
Cc: nvd...@lists.linux.dev
Cc: linux-fsde...@vger.kernel.org
Cc: sparcli...@vger.kernel.org
Cc: linux-s...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.o
From: Alex Shi
Way to replace pgtable_t aka struct page in most of archs.
Signed-off-by: Alex Shi
Cc: linux...@kvack.org
Cc: sparcli...@vger.kernel.org
Cc: linux-s...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Barry Song
Cc: Lance Yang
Cc: Kinsey Ho
From: Alex Shi
Aim is still replace struct page to ptdesc.
Signed-off-by: Alex Shi
Cc: linux-ker...@vger.kernel.org
Cc: linux...@kvack.org
Cc: Andrew Morton
---
mm/huge_memory.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index
From: Alex Shi
Replace pgtable_t by ptdesc in free_pte_range and it's callee pte_free_tlb
series functions. And save some converters now. We have to use type
casting for pmd_pgtable() instead of page_ptdesc() helper since
different arch has different type of pgtable_t.
btw, we can not simplify p
From: Alex Shi
Now we could remove couple of page<->ptdesc converters now.
Signed-off-by: Alex Shi
Cc: linux...@kvack.org
Cc: linux-a...@vger.kernel.org
Cc: nvd...@lists.linux.dev
Cc: linux-fsde...@vger.kernel.org
Cc: sparcli...@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-m...@l
From: Alex Shi
Replace pgtable_t and struct page by ptdesc in pte_alloc_one series
functions.
Signed-off-by: Alex Shi
Cc: linux...@kvack.org
Cc: linux-a...@vger.kernel.org
Cc: nvd...@lists.linux.dev
Cc: linux-fsde...@vger.kernel.org
Cc: sparcli...@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.o
From: Alex Shi
Replace pgtable_t by ptdesc in function __pte_alloc.
We will remove pgtable_t from all place.
Signed-off-by: Alex Shi
Cc: linux-ker...@vger.kernel.org
Cc: linux...@kvack.org
Cc: Andrew Morton
---
mm/memory.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff
From: Alex Shi
Since we have ptdesc struct now, better to use replace pgtable_t, aka
'struct page *'. It's alaos a preparation for return ptdesc pointer
in pte_alloc_one series function.
Signed-off-by: Alex Shi
Cc: linux-ker...@vger.kernel.org
Cc: linux...@kvack.org
Cc: Andrew Morton
---
mm/h
From: Alex Shi
Since we have ptdesc struct now, better to use replace pgtable_t, aka
'struct page *'. It's alaos a preparation for return ptdesc pointer
in pte_alloc_one series function.
Signed-off-by: Alex Shi
Cc: linux-ker...@vger.kernel.org
Cc: linux...@kvack.org
Cc: Andrew Morton
---
mm/h
From: Alex Shi
ince we have ptdesc struct now, better to use replace pgtable_t, aka
'struct page *'. It's alaos a preparation for return ptdesc pointer
in pte_alloc_one series function.
Signed-off-by: Alex Shi
Cc: linux-ker...@vger.kernel.org
Cc: linux...@kvack.org
Cc: Andrew Morton
---
mm/hu
From: Alex Shi
Since we have ptdesc struct now, better to use replace pgtable_t, aka
'struct page *'. It's alaos a preparation for return ptdesc pointer
in pte_alloc_one series function.
Signed-off-by: Alex Shi
Cc: linux-ker...@vger.kernel.org
Cc: linux...@kvack.org
Cc: Andrew Morton
---
mm/h
From: Alex Shi
Since we have ptdesc struct now, better to use replace pgtable_t, aka
'struct page *'.
It's a prepare for return ptdesc pointer in pte_alloc_one series
function.
Signed-off-by: Alex Shi
Cc: linux-ker...@vger.kernel.org
Cc: nvd...@lists.linux.dev
Cc: linux-fsde...@vger.kernel.org
From: Alex Shi
folio/page.pmd_huge_pte is a pointer to pagetable descriptor: pgtable_t.
In most arch, it is a typedef of 'struct page *'. But we have ptdesc now,
tt's better to convert it to right one: struct ptdesc pointer.
Different from others, s390/sparc use typedef 'pte_t *' as pgtable_t, s
From: Alex Shi
page table descriptor is splited from struct page, use it to replace struct
page in right place.
Signed-off-by: Alex Shi
Cc: linux-ker...@vger.kernel.org
Cc: linux...@kvack.org
Cc: Andrew Morton
Cc: Matthew Wilcox
Cc: David Hildenbrand
---
mm/pgtable-generic.c | 13 ++---
From: Alex Shi
We have struct ptdesc for page table descriptor a year ago, but it
has no much usages in kernel, while pgtable_t is used widely.
The pgtable_t is typedefed as 'pte_t *' in sparc, s390, powerpc and m68k
except SUN3, others archs are all same as 'struct page *'.
These blocks the co
…
> +++ b/drivers/soc/fsl/qe/tsa.c
…
> +static int tsa_qe_serial_connect(struct tsa_serial *tsa_serial, bool connect)
> +{
…
> + spin_lock_irqsave(&tsa->lock, flags);
> + ret = ucc_set_qe_mux_tsa(ucc_num, connect);
> + spin_unlock_irqrestore(&tsa->lock, flags);
…
Under which circumstan
On 7/27/24 01:51, Sean Christopherson wrote:
Provide the "struct page" associated with a guest_memfd pfn as an output
from __kvm_gmem_get_pfn() so that KVM guest page fault handlers can
Just "kvm_gmem_get_pfn()".
directly put the page instead of having to rely on
k
On 7/27/24 01:51, Sean Christopherson wrote:
Use __kvm_faultin_page() get the APIC access page so that KVM can
precisely release the refcounted page, i.e. to remove yet another user
of kvm_pfn_to_refcounted_page(). While the path isn't handling a guest
page fault, the semantics are effectively t
On 7/27/24 01:51, Sean Christopherson wrote:
Move KVM x86's helper that "finishes" the faultin process to common KVM
so that the logic can be shared across all architectures. Note, not all
architectures implement a fast page fault path, but the gist of the
comment applies to all architectures.
On 7/27/24 01:51, Sean Christopherson wrote:
Move the marking of folios dirty from make_spte() out to its callers,
which have access to the _struct page_, not just the underlying pfn.
Once all architectures follow suit, this will allow removing KVM's ugly
hack where KVM elevates the refcount of V
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