* + selftests-mm-add-support-to-test-4pb-va-on-ppc64.patch added to mm-new branch
@ 2025-07-29 20:44 Andrew Morton
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Morton @ 2025-07-29 20:44 UTC (permalink / raw)
To: mm-commits, ziy, shuah, ryan.roberts, ritesh.list, npache,
lorenzo.stoakes, liam.howlett, dev.jain, david, baolin.wang,
baohua, aboorvad, donettom, akpm
The patch titled
Subject: selftests/mm: add support to test 4PB VA on PPC64
has been added to the -mm mm-new branch. Its filename is
selftests-mm-add-support-to-test-4pb-va-on-ppc64.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-add-support-to-test-4pb-va-on-ppc64.patch
This patch will later appear in the mm-new branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews. Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Donet Tom <donettom@linux.ibm.com>
Subject: selftests/mm: add support to test 4PB VA on PPC64
Date: Tue, 29 Jul 2025 11:03:58 +0530
PowerPC64 supports a 4PB virtual address space, but this test was
previously limited to 512TB. This patch extends the coverage up to the
full 4PB VA range on PowerPC64.
Memory from 0 to 128TB is allocated without an address hint, while
allocations from 128TB to 4PB use a hint address.
Link: https://lkml.kernel.org/r/20250729053403.1071807-3-aboorvad@linux.ibm.com
Co-developed-by: Aboorva Devarajan <aboorvad@linux.ibm.com>
Signed-off-by: Aboorva Devarajan <aboorvad@linux.ibm.com>
Signed-off-by: Donet Tom <donettom@linux.ibm.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mariano Pache <npache@redhat.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
tools/testing/selftests/mm/virtual_address_range.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/tools/testing/selftests/mm/virtual_address_range.c~selftests-mm-add-support-to-test-4pb-va-on-ppc64
+++ a/tools/testing/selftests/mm/virtual_address_range.c
@@ -44,12 +44,18 @@
* On Arm64 the address space is 256TB and support for
* high mappings up to 4PB virtual address space has
* been added.
+ *
+ * On PowerPC64, the address space up to 128TB can be
+ * mapped without a hint. Addresses beyond 128TB, up to
+ * 4PB, can be mapped with a hint.
+ *
*/
#define NR_CHUNKS_128TB ((128 * SZ_1TB) / MAP_CHUNK_SIZE) /* Number of chunks for 128TB */
#define NR_CHUNKS_256TB (NR_CHUNKS_128TB * 2UL)
#define NR_CHUNKS_384TB (NR_CHUNKS_128TB * 3UL)
#define NR_CHUNKS_3840TB (NR_CHUNKS_128TB * 30UL)
+#define NR_CHUNKS_3968TB (NR_CHUNKS_128TB * 31UL)
#define ADDR_MARK_128TB (1UL << 47) /* First address beyond 128TB */
#define ADDR_MARK_256TB (1UL << 48) /* First address beyond 256TB */
@@ -59,6 +65,11 @@
#define HIGH_ADDR_SHIFT 49
#define NR_CHUNKS_LOW NR_CHUNKS_256TB
#define NR_CHUNKS_HIGH NR_CHUNKS_3840TB
+#elif defined(__PPC64__)
+#define HIGH_ADDR_MARK ADDR_MARK_128TB
+#define HIGH_ADDR_SHIFT 48
+#define NR_CHUNKS_LOW NR_CHUNKS_128TB
+#define NR_CHUNKS_HIGH NR_CHUNKS_3968TB
#else
#define HIGH_ADDR_MARK ADDR_MARK_128TB
#define HIGH_ADDR_SHIFT 48
_
Patches currently in -mm which might be from donettom@linux.ibm.com are
mm-selftests-fix-incorrect-pointer-being-passed-to-mark_range.patch
selftests-mm-add-support-to-test-4pb-va-on-ppc64.patch
selftest-mm-fix-ksm_funtional_test-failures.patch
mm-selftests-fix-split_huge_page_test-failure-on-systems-with-64kb-page-size.patch
^ permalink raw reply [flat|nested] 2+ messages in thread
* + selftests-mm-add-support-to-test-4pb-va-on-ppc64.patch added to mm-new branch
@ 2025-08-16 5:26 Andrew Morton
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Morton @ 2025-08-16 5:26 UTC (permalink / raw)
To: mm-commits, ziy, shuah, ryan.roberts, ritesh.list,
richard.weiyang, npache, lorenzo.stoakes, liam.howlett, dev.jain,
david, baolin.wang, baohua, aboorvad, donettom, akpm
The patch titled
Subject: selftests/mm: add support to test 4PB VA on PPC64
has been added to the -mm mm-new branch. Its filename is
selftests-mm-add-support-to-test-4pb-va-on-ppc64.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-add-support-to-test-4pb-va-on-ppc64.patch
This patch will later appear in the mm-new branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews. Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Donet Tom <donettom@linux.ibm.com>
Subject: selftests/mm: add support to test 4PB VA on PPC64
Date: Sat, 16 Aug 2025 09:31:08 +0530
PowerPC64 supports a 4PB virtual address space, but this test was
previously limited to 512TB. This patch extends the coverage up to the
full 4PB VA range on PowerPC64.
Memory from 0 to 128TB is allocated without an address hint, while
allocations from 128TB to 4PB use a hint address.
Link: https://lkml.kernel.org/r/20250816040113.760010-3-aboorvad@linux.ibm.com
Co-developed-by: Aboorva Devarajan <aboorvad@linux.ibm.com>
Signed-off-by: Aboorva Devarajan <aboorvad@linux.ibm.com>
Signed-off-by: Donet Tom <donettom@linux.ibm.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mariano Pache <npache@redhat.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
tools/testing/selftests/mm/virtual_address_range.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/tools/testing/selftests/mm/virtual_address_range.c~selftests-mm-add-support-to-test-4pb-va-on-ppc64
+++ a/tools/testing/selftests/mm/virtual_address_range.c
@@ -44,12 +44,18 @@
* On Arm64 the address space is 256TB and support for
* high mappings up to 4PB virtual address space has
* been added.
+ *
+ * On PowerPC64, the address space up to 128TB can be
+ * mapped without a hint. Addresses beyond 128TB, up to
+ * 4PB, can be mapped with a hint.
+ *
*/
#define NR_CHUNKS_128TB ((128 * SZ_1TB) / MAP_CHUNK_SIZE) /* Number of chunks for 128TB */
#define NR_CHUNKS_256TB (NR_CHUNKS_128TB * 2UL)
#define NR_CHUNKS_384TB (NR_CHUNKS_128TB * 3UL)
#define NR_CHUNKS_3840TB (NR_CHUNKS_128TB * 30UL)
+#define NR_CHUNKS_3968TB (NR_CHUNKS_128TB * 31UL)
#define ADDR_MARK_128TB (1UL << 47) /* First address beyond 128TB */
#define ADDR_MARK_256TB (1UL << 48) /* First address beyond 256TB */
@@ -59,6 +65,11 @@
#define HIGH_ADDR_SHIFT 49
#define NR_CHUNKS_LOW NR_CHUNKS_256TB
#define NR_CHUNKS_HIGH NR_CHUNKS_3840TB
+#elif defined(__PPC64__)
+#define HIGH_ADDR_MARK ADDR_MARK_128TB
+#define HIGH_ADDR_SHIFT 48
+#define NR_CHUNKS_LOW NR_CHUNKS_128TB
+#define NR_CHUNKS_HIGH NR_CHUNKS_3968TB
#else
#define HIGH_ADDR_MARK ADDR_MARK_128TB
#define HIGH_ADDR_SHIFT 48
_
Patches currently in -mm which might be from donettom@linux.ibm.com are
mm-selftests-fix-incorrect-pointer-being-passed-to-mark_range.patch
selftests-mm-add-support-to-test-4pb-va-on-ppc64.patch
selftest-mm-fix-ksm_funtional_test-failures.patch
mm-selftests-fix-split_huge_page_test-failure-on-systems-with-64kb-page-size.patch
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2025-08-16 5:26 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-07-29 20:44 + selftests-mm-add-support-to-test-4pb-va-on-ppc64.patch added to mm-new branch Andrew Morton
-- strict thread matches above, loose matches on Subject: below --
2025-08-16 5:26 Andrew Morton
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.