With 2M PMD-level mapping, we require 32 struct pages and a single vmemmap page
can contain 1024 struct pages (PAGE_SIZE/sizeof(struct page)). Hence with 64K
page size, we don't use vmemmap deduplication for PMD-level mapping.
Signed-off-by: Aneesh Kumar K.V
---
Documentation/mm
need to do the above check even at the PAGE_SIZE granularity.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/book3s/64/radix.h | 2 +
arch/powerpc/include/asm/pgtable.h | 3 +
arch/powerpc/mm/book3s64/radix_pgtable.c | 293 +++--
arch/powerpc/mm/init_64
expected pte bit combination is _PAGE_PTE | _PAGE_DEVMAP.
Some of the helpers are never expected to get called on hash translation and
hence is marked to call BUG() in such a case.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 156 --
arch
is not enabled
for them. With this change, arm64 should be able to select DAX optimization
[1] commit 060a2c92d1b6 ("arm64: mm: hugetlb: Disable
HUGETLB_PAGE_OPTIMIZE_VMEMMAP")
Signed-off-by: Aneesh Kumar K.V
---
arch/loongarch/Kconfig | 2 +-
arch/riscv/Kconfig | 2 +-
arch/x86/Kconfig
pudp_set_wrprotect and move_huge_pud helpers are only used when
CONFIG_TRANSPARENT_HUGEPAGE is enabled. Similar to pmdp_set_wrprotect and
move_huge_pmd_helpers use architecture override only if
CONFIG_TRANSPARENT_HUGEPAGE is set
Signed-off-by: Aneesh Kumar K.V
---
include/linux/pgtable.h | 2
This helps architectures to override pmd_same and pud_same
independently.
Signed-off-by: Aneesh Kumar K.V
---
include/linux/pgtable.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 2fe19720075e..8c5174d1f9db 100644
--- a/include
Architectures like powerpc will like to use different page table allocators and
mapping mechanisms to implement vmemmap optimization. Similar to
vmemmap_populate allow architectures to implement vmemap_populate_compound_pages
Signed-off-by: Aneesh Kumar K.V
---
mm/sparse-vmemmap.c | 3 +++
1
MMU translation). Hence allow architecture
override.
Signed-off-by: Aneesh Kumar K.V
---
include/linux/mm.h | 30 ++
mm/mm_init.c | 2 +-
2 files changed, 27 insertions(+), 5 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 27ce77080c79
We will use this in a later patch to do tlb flush when clearing pud entries on
powerpc. This is similar to
commit 93a98695f2f9 ("mm: change pmdp_huge_get_and_clear_full take
vm_area_struct as arg")
Signed-off-by: Aneesh Kumar K.V
---
include/linux/pgtable.h | 4 ++--
mm/debug_vm
Architectures like powerpc would like to enable transparent huge page pud
support only with radix translation. To support that add
has_transparent_pud_hugepage() helper that architectures can override.
Signed-off-by: Aneesh Kumar K.V
---
drivers/nvdimm/pfn_devs.c | 2 +-
include/linux/pgtable.h
Without this fix, the last subsection vmemmap can end up in memory even if the
namespace is created with -M mem and has sufficient space in the altmap area.
Fixes: cf387d9644d8 ("libnvdimm/altmap: Track namespace boundaries in altmap")
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/
No functional change in this patch.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/book3s64/radix_pgtable.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c
b/arch/powerpc/mm/book3s64/radix_pgtable.c
index 15a099e53cde
: 0 kB
DirectMap64k: 0 kB
DirectMap2M:104857600 kB
DirectMap1G: 0 kB
Fixes: a2dc009afa9a ("powerpc/mm/book3s/radix: Add mapping statistics")
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/book3s64/radix_pgtable.c | 34 +++-
1 fi
This should not be within CONFIG_PPC_64S_HASHS_MMU. We use mmu_vmemmap_psize
on radix while mapping the vmemmap area.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/book3s64/radix_pgtable.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c
b
No functional change in this patch.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/book3s64/radix_pgtable.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c
b/arch/powerpc/mm/book3s64/radix_pgtable.c
index 2297aa764ecd
Split hugetlb and
d
Aneesh Kumar K.V (16):
powerpc/mm/book3s64: Use pmdp_ptep helper instead of typecasting.
powerpc/book3s64/mm: mmu_vmemmap_psize is used by radix
powerpc/book3s64/mm: Fix DirectMap stats in /proc/meminfo
powerpc/book3s64/mm: Use PAGE_KERNEL instead of opencoding
powerpc/m
g _PAGE_SOFTDIRTY to the set of bits that are able to be
> changed in radix__ptep_set_access_flags().
>
Reviewed-by: Aneesh Kumar K.V
> Fixes: b0b5e9b13047 ("powerpc/mm/radix: Add radix pte #defines")
> Cc: sta...@vger.kernel.org # v4.7+
> Reported-by: Dan Horák
> Link:
> https://lor
("powerpc/nvdimm: Pick nearby online node if the device
node is not online")
Signed-off-by: Aneesh Kumar K.V
---
Changes from v1:
* Update commit message
* Update code comment
arch/powerpc/mm/numa.c| 1 +
arch/powerpc/platforms/pseries/papr_scm.c | 7 +++
2 files
"Aneesh Kumar K.V" writes:
> platform device helper routines won't update the NUMA distance table
> while creating a platform device, even if the device is present on
> a NUMA node that doesn't have memory or CPU. This is especially true
> for pmem devices. If the target n
node is not online")
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/platforms/pseries/papr_scm.c | 4
1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/papr_scm.c
b/arch/powerpc/platforms/pseries/papr_scm.c
index 2f8385523a13..5bef75714bd5 100644
--- a/ar
ells
Cc: linux-fsde...@vger.kernel.org
Cc: Al Viro
Signed-off-by: Aneesh Kumar K.V
---
fs/buffer.c| 6 +++---
fs/dax.c | 2 +-
fs/iomap/buffered-io.c | 6 +++---
fs/iomap/direct-io.c | 2 +-
include/linux/fs.h | 4 ++--
include/linux/stat.h | 2 +-
mm/truncate.c | 2
03cde0] system_call_exception+0x250/0x600
[c0002ccb3e10] [c000c3bc] system_call_common+0xec/0x250
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/hugetlbpage.c | 6 +++---
mm/pagewalk.c | 2 +-
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/mm/hugetlb
This function does the hash page table update. Hence rename it to
indicate this better to avoid confusion with flush_pmd_tlb_range()
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/book3s/64/tlbflush-hash.h | 5 ++---
arch/powerpc/mm/book3s64/hash_pgtable.c| 2 +-
arch
age sizes supported at the P4D level.
>
> Therefore p4d_is_leaf() can never be true, so drop the definition and
> fallback to the default implementation that always returns false.
>
Reviewed-by: Aneesh Kumar K.V
> Signed-off-by: Michael Ellerman
> ---
> arch/powerpc/include/asm/book3
t; base page size.
>
> Therefore there are no longer any supported configurations where
> pgd_huge() can be true, so drop the definitions for pgd_huge(), and
> fallback to the generic definition which is always false.
>
Reviewed-by: Aneesh Kumar K.V
> Fixes: ba95b5d03596 ("po
Yury Norov writes:
> The functions are pretty thin wrappers around find_bit engine, and
> keeping them in c-file prevents compiler from small_const_nbits()
> optimization, which must take place for all systems with MAX_NUMNODES
> less than BITS_PER_LONG (default is 16 for me).
>
> Moving them to
No functional change in this patch. This was done so that
the previous change (commit ac790d09885d ("powerpc/memhotplug:
Add add_pages override for PPC")) can be easily backported.
Cc: Michal Hocko
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/Kconfig | 5 +
arch/x86/Kconf
Instead of high_memory use is_vmalloc_addr to validate that the address is
not in the vmalloc range.
Cc: Kefeng Wang
Cc: Christophe Leroy
Signed-off-by: Aneesh Kumar K.V
-
---
arch/powerpc/include/asm/page.h | 10 --
arch/powerpc/mm/mem.c | 11 +++
2 files changed
For both CONFIG_NUMA enabled/disabled use mem_topology_setup to
update max/min_low_pfn.
This also add min_low_pfn update to CONFIG_NUMA which was initialized
to zero before.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/numa.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions
() for 64-bit Book3E &
32-bit")
Cc: Kefeng Wang
Cc: Christophe Leroy
Signed-off-by: Aneesh Kumar K.V
---
Changes from v2:
* drop WARN_ON_ONCE
* check for error from __add_pages
arch/powerpc/Kconfig | 4
arch/powerpc/mm/mem.c | 33 -
2 files changed,
Srikar Dronamraju writes:
> * Aneesh Kumar K.V [2022-06-23 18:24:41]:
>
>> If early cpu to node mapping finds an invalid node id, return
>> the first online node instead of node 0.
>>
>> With commit e75130f20b1f ("powerpc/numa: Offline memoryless cpuless
() for 64-bit Book3E &
32-bit")
Cc: Kefeng Wang
Cc: Christophe Leroy
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/Kconfig | 4
arch/powerpc/mm/mem.c | 32 +++-
2 files changed, 35 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/Kconf
Christophe Leroy writes:
> Le 23/06/2022 à 14:29, Aneesh Kumar K.V a écrit :
>> Instead of high_memory use VMALLOC_START to validate that the address is
>> not in the vmalloc range.
>>
>> Cc: Kefeng Wang
>> Cc: Christophe Leroy
>> Signed-off-by: Ane
Srikar Dronamraju writes:
> * Aneesh Kumar K.V [2022-06-23 18:24:42]:
>
>> While building the cpu_to_node map make sure we always use the online node
>> to build the mapping table. In general this should not be an issue
>> because the kernel use similar lookup mechanism
Christophe Leroy writes:
> Le 23/06/2022 à 14:29, Aneesh Kumar K.V a écrit :
>> Instead of high_memory use VMALLOC_START to validate that the address is
>> not in the vmalloc range.
>
> What's the reason for using VMALLOC_START instead ?
> The gap between high_memory
Michael Ellerman writes:
> "Aneesh Kumar K.V" writes:
>> Instead of high_memory use VMALLOC_START to validate that the address is
>> not in the vmalloc range.
>>
>> Cc: Kefeng Wang
>> Cc: Christophe Leroy
>> Signed-off-by: Aneesh Kumar K.
in numa_setup_cpu() will always be found online.
To keep logic simpler/correct, make sure that if the hypervisor
or device tree returned a not online node, don't use that to build
the map table. Instead, use the first_online_node.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/numa.c | 2 +-
1 file
If early cpu to node mapping finds an invalid node id, return
the first online node instead of node 0.
With commit e75130f20b1f ("powerpc/numa: Offline memoryless cpuless node 0")
the kernel marks node 0 offline in certain scenarios.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/i
Instead of high_memory use VMALLOC_START to validate that the address is
not in the vmalloc range.
Cc: Kefeng Wang
Cc: Christophe Leroy
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/page.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/include
() for 64-bit Book3E &
32-bit")
Cc: Kefeng Wang
Cc: Christophe Leroy
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/Kconfig | 1 +
arch/powerpc/mm/mem.c | 32 +++-
arch/x86/Kconfig | 5 +
mm/Kconfig| 3 +++
4 files changed, 36 inse
For both CONFIG_NUMA enabled/disabled use mem_topology_setup to
update max/min_low_pfn.
This also add min_low_pfn update to CONFIG_NUMA which was initialized
to zero before.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/numa.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions
> CMA_MIN_ALIGNMENT_PAGES to fail.
>
> Fix it by moving the call to kvm_cma_reserve() after initmem_init(). The
> pageblock_order is initialised in sparse_init() which is called from
> initmem_init().
>
> Also move the hugetlb CMA reservation.
>
Reviewed-by: Aneesh Kumar K.V
>
If early cpu to node mapping finds an invalid node id, return
the first online node instead of node 0. On ppc, we can find node 0
not present.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/topology.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc
numa_setup_cpu can return nodes that are not online. But setup_node_data()
only initialize NODE_DATA for only online numa nodes. Hence avoid returning
nodes that are not online.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/numa.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion
Vaibhav Jain writes:
> Right now 'char *' elements allocated individual 'stat_id' in
> 'papr_scm_priv.nvdimm_events_map' during papr_scm_pmu_check_events() leak in
> papr_scm_remove() and papr_scm_pmu_register(), papr_scm_pmu_check_events()
> error
> paths.
>
> Also individual 'stat_id' arent
(u16 pkey)
>
> Change the type of the pkey passed to arch_set_user_pkey_access() to u8.
>
> To: Dave Hansen
> To: Michael Ellerman
> Cc: Aneesh Kumar K.V
> Signed-off-by: Ira Weiny
> ---
> arch/powerpc/include/asm/pkeys.h | 4 ++--
> arch/powerpc/mm/book3s64/pkey
Fabiano Rosas writes:
> We're currently getting a Program Interrupt inside the nested guest
> kernel when running with GTSE disabled in the nested hypervisor. We
> allow any guest a cmdline override of GTSE for migration purposes. The
> nested guest does not know it needs to use the option and
Avoid code duplication by adding util.h. No functional change
in this patch.
Cc: Shuah Khan
Cc: linux-kselft...@vger.kernel.org
Signed-off-by: Aneesh Kumar K.V
---
Changes from v3:
* rebased to linux-next-20220302
tools/testing/selftests/vm/ksm_tests.c| 38 +--
tools
),
(uintptr_t)ptr >> (PAGE_SHIFT - 3)) != sizeof(ent))
err(2, "read pagemap");
Cc: Shuah Khan
Cc: linux-kselft...@vger.kernel.org
Signed-off-by: Mike Rapoport
Signed-off-by: Aneesh Kumar K.V
---
tools/testing/selftests/vm/gup_test.c | 3 ++-
tools/test
),
(uintptr_t)ptr >> (PAGE_SHIFT - 3)) != sizeof(ent))
err(2, "read pagemap");
Cc: Shuah Khan
Cc: linux-kselft...@vger.kernel.org
Signed-off-by: Mike Rapoport
Signed-off-by: Aneesh Kumar K.V
---
tools/testing/selftests/vm/gup_test.c | 3 ++-
tools/test
Avoid code duplication by adding util.h. No functional change
in this patch.
Cc: Shuah Khan
Cc: linux-kselft...@vger.kernel.org
Signed-off-by: Aneesh Kumar K.V
---
tools/testing/selftests/vm/ksm_tests.c| 38 +--
tools/testing/selftests/vm/transhuge-stress.c | 42
: Jann Horn
Cc: Shuah Khan
Cc: linux-kselft...@vger.kernel.org
Signed-off-by: Aneesh Kumar K.V
---
.../selftests/vm/map_fixed_noreplace.c| 49 ++-
1 file changed, 37 insertions(+), 12 deletions(-)
diff --git a/tools/testing/selftests/vm/map_fixed_noreplace.c
b/tools
Aneesh Kumar K.V writes:
> David Hildenbrand writes:
>
>> On 11.02.22 10:16, Aneesh Kumar K V wrote:
>>> On 2/11/22 14:00, David Hildenbrand wrote:
>>>> On 11.02.22 07:52, Aneesh Kumar K.V wrote:
>>>>> commit: d9c234005227 ("Do not depen
David Hildenbrand writes:
> On 11.02.22 10:16, Aneesh Kumar K V wrote:
>> On 2/11/22 14:00, David Hildenbrand wrote:
>>> On 11.02.22 07:52, Aneesh Kumar K.V wrote:
>>>> commit: d9c234005227 ("Do not depend on MAX_ORDER when grouping pages by
>>>> m
hould be
5 instead of 8.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/hugetlb.h | 5 -
arch/powerpc/mm/book3s64/hugetlbpage.c | 2 +-
arch/powerpc/mm/hugetlbpage.c | 5 +
arch/powerpc/mm/init_64.c | 4
4 files changed, 10 insertions(+), 6
Avoid code duplication by adding util.h
Cc: Shuah Khan
Cc: linux-kselft...@vger.kernel.org
Signed-off-by: Aneesh Kumar K.V
---
tools/testing/selftests/vm/ksm_tests.c| 45 +---
tools/testing/selftests/vm/transhuge-stress.c | 49 ++---
tools/testing/selftests/vm
),
(uintptr_t)ptr >> (PAGE_SHIFT - 3)) != sizeof(ent))
err(2, "read pagemap");
Cc: Shuah Khan
Cc: linux-kselft...@vger.kernel.org
Signed-off-by: Aneesh Kumar K.V
---
tools/testing/selftests/vm/ksm_tests.c| 9 -
tools/testing/selftests/vm/transh
a huge_pte_alloc.
Fixes: 550a7d60bd5e ("mm, hugepages: add mremap() support for hugepage backed
vma")
Cc: sta...@vger.kernel.org
Reviewed-by: Mike Kravetz
Reviewed-by: Mina Almasry
Signed-off-by: Aneesh Kumar K.V
---
mm/hugetlb.c | 7 +++
1 file changed, 3 insertions(+), 4
Aneesh Kumar K.V writes:
> Shuah Khan writes:
>
>> On 2/9/22 8:43 AM, Aneesh Kumar K.V wrote:
>> --- a/tools/testing/selftests/vm/transhuge-stress.c
>>> +++ b/tools/testing/selftests/vm/transhuge-stress.c
>>> @@ -16,8 +16,16 @@
>>> #include
>
Shuah Khan writes:
> On 2/9/22 8:43 AM, Aneesh Kumar K.V wrote:
>> Keep it simple by using a #define and limiting hugepage size to 2M.
>> This keeps the test simpler instead of dynamically finding the page size
>> and huge page size.
>>
>> Without this tests ar
),
(uintptr_t)ptr >> (PAGE_SHIFT - 3)) != sizeof(ent))
err(2, "read pagemap");
Cc: Shuah Khan
Signed-off-by: Aneesh Kumar K.V
---
tools/testing/selftests/vm/ksm_tests.c| 8
tools/testing/selftests/vm/transhuge-stress.c | 8
2 files change
as HUGETLB_PAGE_ORDER (8) in the case of hash
(16MB).
With radix, HUGETLB_PAGE_ORDER will be 5 (2M size) and hence we would
want pageblock_order to be 5 instead of 8.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/hugetlb.h | 5 -
arch/powerpc/mm/book3s64/hugetlbpage.c | 2 +-
arch/powerpc
low perf interrupts here but always do the
> slowpath stack walk if we are in nmi context, but that slows down all
> perf interrupt stack walking on hash though and it does not remove as
> much tricky code.
>
Reviewed-by: Aneesh Kumar K.V
> Cc: Aneesh Kumar K.V
> Reported-by: L
the PDSM 'SMART_INJECT', papr_pdsm_smart_inject()
> constructs a pair or 'inject_mask' and 'clear_mask' bitmaps from the payload
> and bit-blt it to the 'health_bitmap_inject_mask'. This ensures the after
> being
> fetched from the hypervisor, the health_bitmap reflects requested smart-error
> s
Michal Suchánek writes:
> Hello,
>
> On Wed, Jul 01, 2020 at 12:52:29PM +0530, Aneesh Kumar K.V wrote:
>> The PAPR based virtualized persistent memory devices are only supported on
>> POWER9 and above. In the followup patch, the kernel will switch the
>> persi
Christophe Leroy writes:
> Le 01/07/2020 à 09:22, Aneesh Kumar K.V a écrit :
>> Start using dcbstps; phwsync; sequence for flushing persistent memory range.
>> The new instructions are implemented as a variant of dcbf and hwsync and on
>> P8 and P9 they will be executed as t
Vaibhav Jain writes:
> Presently PAPR doesn't support injecting smart errors on an
> NVDIMM. This makes testing the NVDIMM health reporting functionality
> difficult as simulating NVDIMM health related events need a hacked up
> qemu version.
>
> To solve this problem this patch proposes
Nicholas Piggin writes:
> In case the FORM2 distance table from firmware is not the expected size,
> there is fallback code that just populates the lookup table as local vs
> remote.
>
> However it then continues on to use the distance table. Fix.
>
Reviewed-by: Aneesh Kumar
On 10/4/21 20:41, Sourabh Jain wrote:
On large config LPARs (having 192 and more cores), Linux fails to boot
due to insufficient memory in the first memory block. It is due to the
reserve crashkernel area starts at 128MB offset by default and which
doesn't leave enough space in the first memory
On 10/4/21 20:41, Sourabh Jain wrote:
From: Mahesh Salgaonkar
On system with radix support available, early_radix_enabled() starts
returning true for a small window (until mmu_early_init_devtree() is
called) even when radix mode disabled on kernel command line. This causes
ppc64_bolted_size()
Fix make htmldocs related errors with the newly added associativity.rst
doc file.
Reported-by: Stephen Rothwell
Signed-off-by: Aneesh Kumar K.V
---
Documentation/powerpc/associativity.rst | 29 +
Documentation/powerpc/index.rst | 1 +
2 files changed, 16
Stephen Rothwell writes:
> Hi all,
>
> [cc'ing Jon in case he can fix the sphix hang - or knows anything about it]
>
> On Mon, 23 Aug 2021 19:55:40 +1000 Stephen Rothwell
> wrote:
>>
>> After merging the powerpc tree, today's linux-next build (htmldocs)
>> produced this warning:
>>
>
> I
Similar to x86/s390 add a debugfs file to tune tlb_single_page_flush_ceiling.
Also add a debugfs entry for tlb_local_single_page_flush_ceiling.
Signed-off-by: Aneesh Kumar K.V
---
Changes from v1:
* switch to debugfs_create_u32
arch/powerpc/mm/book3s64/radix_tlb.c | 16 ++--
1 file
No functional change in this patch. arch_debugfs_dir is the generic kernel
name declared in linux/debugfs.h for arch-specific debugfs directory.
Architectures like x86/s390 already use the name. Rename powerpc
specific powerpc_debugfs_root to arch_debugfs_dir.
Signed-off-by: Aneesh Kumar K.V
-off-by: Daniel Henrique Barboza
Signed-off-by: Aneesh Kumar K.V
---
Documentation/powerpc/associativity.rst | 104
arch/powerpc/include/asm/firmware.h | 3 +-
arch/powerpc/include/asm/prom.h | 1 +
arch/powerpc/kernel/prom_init.c | 3 +-
arch/powerpc
This helper is only used with the dispatch trace log collection.
A later patch will add Form2 affinity support and this change helps
in keeping that simpler. Also add a comment explaining we don't expect
the code to be called with FORM0
Reviewed-by: David Gibson
Signed-off-by: Aneesh Kumar K.V
y provided
by these device tree properties are very similar and hence can use
a helper to parse the node id and numa distance details.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/topology.h | 2 +
arch/powerpc/mm/numa.c| 212 +-
arch/powerpc
Also make related code cleanup that will allow adding FORM2_AFFINITY in
later patches. No functional change in this patch.
Reviewed-by: David Gibson
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/firmware.h | 4 +--
arch/powerpc/include/asm/prom.h | 2 +-
arch
No functional change in this patch.
Reviewed-by: David Gibson
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/numa.c | 38 +++---
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index
evice tree property for now because both Qemu nor PowerVM
will provide the distance details of all possible NUMA nodes during boot.
* Rework numa distance code based on review feedback.
Changes from v3:
* Drop PAPR SCM specific changes and depend completely on NUMA distance
information.
Ch
mmu()' into tlb flushing and memory
freeing parts")
This results in the kernel issuing a high number of TLB flushes even for a large
range. This can be improved by making sure the kernel switch to pid based flush
if the
kernel is unmapping a 2M range.
Signed-off-by: Aneesh Kumar K.V
---
arch
On 8/12/21 12:58 PM, Michael Ellerman wrote:
Christophe Leroy writes:
Le 10/08/2021 à 06:53, Aneesh Kumar K.V a écrit :
Similar to x86/s390 add a debugfs file to tune tlb_single_page_flush_ceiling.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/book3s64/radix_tlb.c | 48
On 8/12/21 7:11 AM, David Gibson wrote:
On Wed, Aug 11, 2021 at 09:39:32AM +0530, Aneesh Kumar K.V wrote:
David Gibson writes:
On Mon, Aug 09, 2021 at 10:54:33AM +0530, Aneesh Kumar K.V wrote:
PAPR interface currently supports two different ways of communicating resource
grouping details
David Gibson writes:
> On Mon, Aug 09, 2021 at 10:54:33AM +0530, Aneesh Kumar K.V wrote:
>> PAPR interface currently supports two different ways of communicating
>> resource
>> grouping details to the OS. These are referred to as Form 0 and Form 1
>> associativity gr
No functional change in this patch. arch_debugfs_dir is the generic kernel
name declared in linux/debugfs.h for arch-specific debugfs directory.
Architectures like x86/s390 already use the name. Rename powerpc
specific powerpc_debugfs_root to arch_debugfs_dir.
Signed-off-by: Aneesh Kumar K.V
Similar to x86/s390 add a debugfs file to tune tlb_single_page_flush_ceiling.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/book3s64/radix_tlb.c | 48
1 file changed, 48 insertions(+)
diff --git a/arch/powerpc/mm/book3s64/radix_tlb.c
b/arch/powerpc/mm
Currently, we duplicate parsing code for ibm,associativity and
ibm,associativity-lookup-arrays in the kernel. The associativity array provided
by these device tree properties are very similar and hence can use
a helper to parse the node id and numa distance details.
Signed-off-by: Aneesh Kumar
-off-by: Daniel Henrique Barboza
Signed-off-by: Aneesh Kumar K.V
---
Documentation/powerpc/associativity.rst | 103 +
arch/powerpc/include/asm/firmware.h | 3 +-
arch/powerpc/include/asm/prom.h | 1 +
arch/powerpc/kernel/prom_init.c | 3 +-
arch
This helper is only used with the dispatch trace log collection.
A later patch will add Form2 affinity support and this change helps
in keeping that simpler. Also add a comment explaining we don't expect
the code to be called with FORM0
Reviewed-by: David Gibson
Signed-off-by: Aneesh Kumar K.V
de id
from the associativity property, add helpers that can be used
during boot which does this only once. Also remove the distance
update from node id lookup helpers.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/topology.h | 2 +
arch/powerpc/mm/numa.c
Also make related code cleanup that will allow adding FORM2_AFFINITY in
later patches. No functional change in this patch.
Reviewed-by: David Gibson
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/firmware.h | 4 +--
arch/powerpc/include/asm/prom.h | 2 +-
arch
No functional change in this patch.
Reviewed-by: David Gibson
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/numa.c | 38 +++---
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index
istance details of all possible NUMA nodes during boot.
* Rework numa distance code based on review feedback.
Changes from v3:
* Drop PAPR SCM specific changes and depend completely on NUMA distance
information.
Changes from v2:
* Add nvdimm list to Cc:
* update PATCH 8 commit message.
Changes
On 8/6/21 12:17 PM, David Gibson wrote:
On Tue, Jul 27, 2021 at 03:33:11PM +0530, Aneesh Kumar K.V wrote:
Currently, we duplicate parsing code for ibm,associativity and
ibm,associativity-lookup-arrays in the kernel. The associativity array provided
by these device tree properties are very
igh number of TLB flushes even for a large
range. This can be improved by making sure the kernel switch to pid based flush
if the
kernel is unmapping a 2M range.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/book3s64/radix_tlb.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
This helper is only used with the dispatch trace log collection.
A later patch will add Form2 affinity support and this change helps
in keeping that simpler. Also add a comment explaining we don't expect
the code to be called with FORM0
Reviewed-by: David Gibson
Signed-off-by: Aneesh Kumar K.V
-off-by: Daniel Henrique Barboza
Signed-off-by: Aneesh Kumar K.V
---
Documentation/powerpc/associativity.rst | 103 +
arch/powerpc/include/asm/firmware.h | 3 +-
arch/powerpc/include/asm/prom.h | 1 +
arch/powerpc/kernel/prom_init.c | 3 +-
arch
Also make related code cleanup that will allow adding FORM2_AFFINITY in
later patches. No functional change in this patch.
Reviewed-by: David Gibson
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/firmware.h | 4 +--
arch/powerpc/include/asm/prom.h | 2 +-
arch
Currently, we duplicate parsing code for ibm,associativity and
ibm,associativity-lookup-arrays in the kernel. The associativity array provided
by these device tree properties are very similar and hence can use
a helper to parse the node id and numa distance details.
Signed-off-by: Aneesh Kumar
de id
from the associativity property, add helpers that can be used
during boot which does this only once. Also remove the distance
update from node id lookup helpers.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/topology.h | 2 +
arch/powerpc/mm/numa.c
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