Hocko
Cc: David Rientjes
Cc: Andrea Arcangeli
Cc: Oscar Salvador
Cc: Mel Gorman
Cc: Mike Rapoport
Cc: Dan Williams
Cc: Pavel Tatashin
Cc: Matthew Wilcox
Cc: David Hildenbrand
Cc: linux-kernel@vger.kernel.org
Acked-by: David Hildenbrand
Acked-by: Michal Hocko
Signed-off-by: Anshuman
On 10/16/2019 10:18 PM, David Hildenbrand wrote:
> On 16.10.19 17:31, Anshuman Khandual wrote:
>>
>>
>> On 10/16/2019 06:11 PM, Michal Hocko wrote:
>>> On Wed 16-10-19 14:29:05, David Hildenbrand wrote:
>>>> On 16.10.19 13:51, Michal Hocko wrote
On 10/17/2019 06:20 AM, Mike Kravetz wrote:
> On 10/16/19 4:02 AM, Anshuman Khandual wrote:
>> HugeTLB helper alloc_gigantic_page() implements fairly generic allocation
>> method where it scans over various zones looking for a large contiguous pfn
>> range befo
On 10/16/2019 06:11 PM, Michal Hocko wrote:
> On Wed 16-10-19 14:29:05, David Hildenbrand wrote:
>> On 16.10.19 13:51, Michal Hocko wrote:
>>> On Wed 16-10-19 16:43:57, Anshuman Khandual wrote:
>>>>
>>>>
>>>> On 10/16/2019 04:39 PM, Davi
On 10/16/2019 04:39 PM, David Hildenbrand wrote:
> On 16.10.19 13:02, Anshuman Khandual wrote:
>> HugeTLB helper alloc_gigantic_page() implements fairly generic allocation
>> method where it scans over various zones looking for a large contiguous pfn
>> range befo
Hocko
Cc: David Rientjes
Cc: Andrea Arcangeli
Cc: Oscar Salvador
Cc: Mel Gorman
Cc: Mike Rapoport
Cc: Dan Williams
Cc: Pavel Tatashin
Cc: Matthew Wilcox
Cc: David Hildenbrand
Cc: linux-kernel@vger.kernel.org
Acked-by: Michal Hocko
Signed-off-by: Anshuman Khandual
---
This is based on https
On 10/16/2019 02:28 PM, Michal Hocko wrote:
> On Wed 16-10-19 13:04:53, Anshuman Khandual wrote:
>> HugeTLB helper alloc_gigantic_page() implements fairly generic allocation
>> method where it scans over various zones looking for a large contiguous pfn
>> range befo
On 10/15/2019 11:39 PM, Qian Cai wrote:
> On Tue, 2019-10-15 at 14:51 +0530, Anshuman Khandual wrote:
>> +static unsigned long __init get_random_vaddr(void)
>> +{
>> +unsigned long random_vaddr, random_pages, total_user_pages;
>> +
>> +total_user_pages
On 10/16/2019 12:12 AM, Qian Cai wrote:
> On Tue, 2019-10-15 at 20:51 +0530, Anshuman Khandual wrote:
>>
>> On 10/15/2019 08:11 PM, Qian Cai wrote:
>>> The x86 will crash with linux-next during boot due to this series (v5) with
>>> the
>>> config
Hocko
Cc: David Rientjes
Cc: Andrea Arcangeli
Cc: Oscar Salvador
Cc: Mel Gorman
Cc: Mike Rapoport
Cc: Dan Williams
Cc: Pavel Tatashin
Cc: Matthew Wilcox
Cc: David Hildenbrand
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
This is based on https://patchwork.kernel.org
On 10/15/2019 08:11 PM, Qian Cai wrote:
> The x86 will crash with linux-next during boot due to this series (v5) with
> the
> config below plus CONFIG_DEBUG_VM_PGTABLE=y. I am not sure if v6 would address
> it.
>
> https://raw.githubusercontent.com/cailca/linux-mm/master/x86.config
>
> [
On 10/15/2019 05:16 PM, Michal Hocko wrote:
> On Tue 15-10-19 14:51:42, Anshuman Khandual wrote:
>> This adds tests which will validate architecture page table helpers and
>> other accessors in their compliance with expected generic MM semantics.
>> This will help
rew Morton
Signed-off-by: Christophe Leroy
Signed-off-by: Anshuman Khandual
---
.../debug/debug-vm-pgtable/arch-support.txt | 34 ++
arch/arm64/Kconfig| 1 +
arch/x86/Kconfig | 1 +
arch/x86/include/asm/pgtable_64.h | 6
Cc: linux...@vger.kernel.org
Cc: sparcli...@vger.kernel.org
Cc: x...@kernel.org
Cc: linux-kernel@vger.kernel.org
Anshuman Khandual (2):
mm/page_alloc: Make alloc_gigantic_page() available for general use
mm/debug: Add tests validating architecture page table helpers
.../debug/debug-vm-pgtable/arch-s
architecture and user page table tear down method.
Signed-off-by: Anshuman Khandual
Reviewed-by: Catalin Marinas
---
arch/arm64/Kconfig | 3 +
arch/arm64/include/asm/memory.h | 1 +
arch/arm64/mm/mmu.c | 303 ++--
3 files changed
will be enabled by a subsequent patch. To avoid racing with
this, take the memory hotplug lock when walking the kernel page table.
Acked-by: David Hildenbrand
Acked-by: Mark Rutland
Signed-off-by: Anshuman Khandual
---
arch/arm64/mm/ptdump_debugfs.c | 4
1 file changed, 4 insertions(+)
diff --git
and updated all relevant functions
Changes in V1: (https://lkml.org/lkml/2019/4/3/28)
References:
[1] https://lkml.org/lkml/2019/5/28/584
[2] https://lkml.org/lkml/2019/6/11/709
Anshuman Khandual (2):
arm64/mm: Hold memory hotplug lock while walking for kernel page table dump
arm64/mm: E
ophe Leroy
Signed-off-by: Anshuman Khandual
---
.../debug/debug-vm-pgtable/arch-support.txt| 34 ++
arch/arm64/Kconfig | 1 +
arch/x86/Kconfig | 1 +
arch/x86/include/asm/pgtable_64.h | 6 +
i
nux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
include/linux/hugetlb.h | 9 +
mm/hugetlb.c| 24 ++--
2 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 4c5a16b..7ff1e36 100644
--- a/inc
Cc: linux...@vger.kernel.org
Cc: sparcli...@vger.kernel.org
Cc: x...@kernel.org
Cc: linux-kernel@vger.kernel.org
Anshuman Khandual (2):
mm/hugetlb: Make alloc_gigantic_page() available for general use
mm/debug: Add tests validating architecture page table helpers
.../debug/debug-vm-pgtable/arch-s
On 10/10/2019 05:04 PM, Catalin Marinas wrote:
> Hi Anshuman,
>
> On Wed, Oct 09, 2019 at 01:51:48PM +0530, Anshuman Khandual wrote:
>> +static void unmap_hotplug_pmd_range(pud_t *pudp, unsigned long addr,
>> +unsigned long
architecture and user page table tear down method.
Signed-off-by: Anshuman Khandual
---
arch/arm64/Kconfig | 3 +
arch/arm64/include/asm/memory.h | 1 +
arch/arm64/mm/mmu.c | 273 ++--
3 files changed, 268 insertions(+), 9 deletions(-)
diff
will be enabled by a subsequent patch. To avoid racing with
this, take the memory hotplug lock when walking the kernel page table.
Acked-by: David Hildenbrand
Acked-by: Mark Rutland
Signed-off-by: Anshuman Khandual
---
arch/arm64/mm/ptdump_debugfs.c | 4
1 file changed, 4 insertions(+)
diff --git
levant functions
Changes in V1: (https://lkml.org/lkml/2019/4/3/28)
References:
[1] https://lkml.org/lkml/2019/5/28/584
[2] https://lkml.org/lkml/2019/6/11/709
Anshuman Khandual (2):
arm64/mm: Hold memory hotplug lock while walking for kernel page table dump
arm64/mm: Enable memory hot rem
On 10/08/2019 04:25 PM, Catalin Marinas wrote:
> On Tue, Oct 08, 2019 at 10:06:26AM +0530, Anshuman Khandual wrote:
>> On 10/07/2019 07:47 PM, Catalin Marinas wrote:
>>> On Mon, Sep 23, 2019 at 11:13:45AM +0530, Anshuman Khandual wrote:
>>>> The arch code for hot-
On 10/07/2019 07:30 PM, Kirill A. Shutemov wrote:
> On Mon, Oct 07, 2019 at 03:51:58PM +0200, Ingo Molnar wrote:
>>
>> * Kirill A. Shutemov wrote:
>>
>>> On Mon, Oct 07, 2019 at 03:06:17PM +0200, Ingo Molnar wrote:
>>>>
>>>> * Anshuman Kha
On 10/07/2019 06:36 PM, Ingo Molnar wrote:
>
> * Anshuman Khandual wrote:
>
>> This adds a test module which will validate architecture page table helpers
>> and accessors regarding compliance with generic MM semantics expectations.
>> This will help various
On 10/07/2019 07:47 PM, Catalin Marinas wrote:
> On Mon, Sep 23, 2019 at 11:13:45AM +0530, Anshuman Khandual wrote:
>> The arch code for hot-remove must tear down portions of the linear map and
>> vmemmap corresponding to memory being removed. In both cases the page
&g
kernel.org
Suggested-by: Catalin Marinas
Signed-off-by: Christophe Leroy
Tested-by: Christophe Leroy#PPC32
Signed-off-by: Anshuman Khandual
---
arch/x86/include/asm/pgtable_64_types.h | 2 +
mm/Kconfig.debug| 15 +
mm/Makefile |
nux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
include/linux/hugetlb.h | 9 +
mm/hugetlb.c| 24 ++--
2 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 53fc34f930d0..cc50d5ad4
ead.org
Cc: linux-i...@vger.kernel.org
Cc: linuxppc-...@lists.ozlabs.org
Cc: linux-s...@vger.kernel.org
Cc: linux...@vger.kernel.org
Cc: sparcli...@vger.kernel.org
Cc: x...@kernel.org
Cc: linux-kernel@vger.kernel.org
Anshuman Khandual (2):
mm/hugetlb: Make alloc_gigantic_page() available for genera
On 10/04/2019 04:28 PM, Michal Hocko wrote:
> On Thu 03-10-19 13:40:57, Anshuman Khandual wrote:
>> Having unmovable pages on a given pageblock should be reported correctly
>> when required with REPORT_FAILURE flag. But there can be a scenario where a
>> reserved page in th
On 10/04/2019 03:49 PM, Steven Price wrote:
> On 04/10/2019 05:23, Anshuman Khandual wrote:
>> Platform implementation for free_initmem() should poison the memory while
>> freeing it up. Hence pass across POISON_FREE_INITMEM while calling into
>> free_reserved_area(). The s
Cc: Will Deacon
Cc: Mark Rutland
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/arm64/mm/init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 45c00a54909c..ea7d38011e83 100644
--- a/arch/arm64
On 10/03/2019 05:20 PM, Qian Cai wrote:
>
>
>> On Oct 3, 2019, at 7:31 AM, Anshuman Khandual
>> wrote:
>>
>> Ohh, never meant that the 'Reserved' bit is anything special here but it
>> is a reason to make a page unmovable unlike many other flags.
>
On 10/03/2019 04:49 PM, Qian Cai wrote:
>
>
>> On Oct 3, 2019, at 5:32 AM, Anshuman Khandual
>> wrote:
>>
>> Even though page flags does contain reserved bit information, the problem
>> is that we are explicitly printing the reason for this pag
On 10/03/2019 03:02 PM, Anshuman Khandual wrote:
>
> On 10/03/2019 02:35 PM, Qian Cai wrote:
>>
>>> On Oct 3, 2019, at 4:10 AM, Anshuman Khandual
>>> wrote:
>>>
>>> Having unmovable pages on a given pageblock should be reported corr
On 10/03/2019 02:35 PM, Qian Cai wrote:
>
>
>> On Oct 3, 2019, at 4:10 AM, Anshuman Khandual
>> wrote:
>>
>> Having unmovable pages on a given pageblock should be reported correctly
>> when required with REPORT_FAILURE flag. But there can be a scenario
ate reason
code like "Reserved page".
Cc: Andrew Morton
Cc: Michal Hocko
Cc: Vlastimil Babka
Cc: Oscar Salvador
Cc: Mel Gorman
Cc: Mike Rapoport
Cc: Dan Williams
Cc: Pavel Tatashin
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
mm/page_alloc.c | 4 +++
implementation of free_initrd_mem() on arm64.
This improves free_initrd_mem() generic implementation for others to use.
>
> Signed-off-by: Mike Rapoport
Tested-by: Anshuman Khandual #arm64
Reviewed-by: Anshuman Khandual
> ---
>
> v4:
> * memblock_free() aligned area ar
On 09/25/2019 10:39 AM, Mike Rapoport wrote:
> From: Mike Rapoport
>
> arm64 calls memblock_free() for the initrd area in its implementation of
> free_initrd_mem(), but this call has no actual effect that late in the boot
> process. By the time initrd is freed, all the reserved memory is
On 09/25/2019 08:43 AM, Andrew Morton wrote:
> On Mon, 23 Sep 2019 11:16:38 +0530 Anshuman Khandual
> wrote:
>
>>
>>
>> On 09/16/2019 11:17 AM, Anshuman Khandual wrote:
>>> In add_memory_resource() the memory range to be hot added first gets into
>&g
On 09/24/2019 06:01 PM, Mike Rapoport wrote:
> On Tue, Sep 24, 2019 at 02:51:01PM +0300, Kirill A. Shutemov wrote:
>> On Fri, Sep 20, 2019 at 12:03:21PM +0530, Anshuman Khandual wrote:
>>> This series adds a test validation for architecture exported page table
>>> h
Hildenbrand
Cc: Pavel Tatashin
Cc: Dan Williams
Signed-off-by: Anshuman Khandual
---
Changes in V2:
- Changed the commit message as per Michal and David
Changed in V1: https://patchwork.kernel.org/patch/11146361/
Original patch https://lkml.org/lkml/2019/9/3/327
Memory hot remove now works
On 09/23/2019 04:47 PM, Matthew Wilcox wrote:
> On Mon, Sep 23, 2019 at 11:13:45AM +0530, Anshuman Khandual wrote:
>> +#ifdef CONFIG_MEMORY_HOTPLUG
>> +static void free_hotplug_page_range(struct page *page, size_t size)
>> +{
>> +WARN_ON(!page || PageReserved
: Jason Gunthorpe
Cc: Logan Gunthorpe
Cc: Ira Weiny
Cc: linux-kernel@vger.kernel.org
Reported-by: kbuild test robot
Signed-off-by: Anshuman Khandual
---
Build and boot tested on arm64 platform with ZONE_DEVICE enabled. But
only boot tested on arm64 and some other platforms with allmodconfig.
On 09/23/2019 04:24 PM, David Hildenbrand wrote:
> On 23.09.19 12:52, Michal Hocko wrote:
>> On Mon 16-09-19 11:17:37, Anshuman Khandual wrote:
>>> In add_memory_resource() the memory range to be hot added first gets into
>>> the memblock via memblock_add() before
On 09/16/2019 07:25 PM, Mike Rapoport wrote:
> (added linux-arch)
>
> On Mon, Sep 16, 2019 at 08:23:29AM -0400, Laura Abbott wrote:
>> On 9/16/19 8:21 AM, Mike Rapoport wrote:
>>> From: Mike Rapoport
>>>
>>> arm64 calls memblock_free() for the initrd area in its implementation of
>>>
ote to help
> improve the system. BTW, we also suggest to use '--base' option to specify the
> base tree in git format-patch, please see
> https://stackoverflow.com/a/37406982]
>
> url:
> https://github.com/0day-ci/linux/commits/Anshuman-Khandual/mm-debug-Add-tests-for-a
On 09/16/2019 11:17 AM, Anshuman Khandual wrote:
> In add_memory_resource() the memory range to be hot added first gets into
> the memblock via memblock_add() before arch_add_memory() is called on it.
> Reverse sequence should be followed during memory hot removal which already
&
Skipped calling into pgtable_page_dtor() for linear mapping page table
pages and updated all relevant functions
Changes in V1: (https://lkml.org/lkml/2019/4/3/28)
References:
[1] https://lkml.org/lkml/2019/5/28/584
[2] https://lkml.org/lkml/2019/6/11/709
Anshuman Khandual (2):
arm64/mm: Hold mem
architecture and user page table tear down method.
Acked-by: Steve Capper
Acked-by: David Hildenbrand
Signed-off-by: Anshuman Khandual
---
arch/arm64/Kconfig | 3 +
arch/arm64/include/asm/memory.h | 1 +
arch/arm64/mm/mmu.c | 305
will be enabled by a subsequent patch. To avoid racing with
this, take the memory hotplug lock when walking the kernel page table.
Acked-by: David Hildenbrand
Acked-by: Mark Rutland
Signed-off-by: Anshuman Khandual
---
arch/arm64/mm/ptdump_debugfs.c | 4
1 file changed, 4 insertions(+)
diff --git
memory block. In the future such methods might have other use cases
as well. So alloc_gigantic_page() has been split carving out actual memory
allocation method and made available via new alloc_gigantic_page_order().
Cc: Mike Kravetz
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman
kernel.org
Suggested-by: Catalin Marinas
Signed-off-by: Christophe Leroy
Tested-by: Christophe Leroy(PPC32)
Signed-off-by: Anshuman Khandual
---
arch/x86/include/asm/pgtable_64_types.h | 2 +
mm/Kconfig.debug| 14 +
mm/Makefile |
ead.org
Cc: linux-i...@vger.kernel.org
Cc: linuxppc-...@lists.ozlabs.org
Cc: linux-s...@vger.kernel.org
Cc: linux...@vger.kernel.org
Cc: sparcli...@vger.kernel.org
Cc: x...@kernel.org
Cc: linux-kernel@vger.kernel.org
Anshuman Khandual (2):
mm/hugetlb: Make alloc_gigantic_page() available for genera
On 09/18/2019 11:52 PM, Gerald Schaefer wrote:
> On Wed, 18 Sep 2019 18:26:03 +0200
> Christophe Leroy wrote:
>
> [..]
>> My suggestion was not to completely drop the #ifdef but to do like you
>> did in pgd_clear_tests() for instance, ie to add the following test on
>> top of the function:
On 09/18/2019 09:56 PM, Christophe Leroy wrote:
>
>
> Le 18/09/2019 à 07:04, Anshuman Khandual a écrit :
>>
>>
>> On 09/13/2019 03:31 PM, Christophe Leroy wrote:
>>>
>>>
>>> Le 13/09/2019 à 11:02, Anshuman Khandual a écrit :
>>
On 09/16/2019 07:14 AM, Balbir Singh wrote:
>
>
> On 3/9/19 7:45 pm, Anshuman Khandual wrote:
>> Memory hot remove uses get_nid_for_pfn() while tearing down linked sysfs
>
> I could not find this path in the code, the only called for get_nid_for_pfn()
> was regi
On 09/15/2019 08:05 AM, Balbir Singh wrote:
>
>
> On 3/9/19 7:45 pm, Anshuman Khandual wrote:
>> The arm64 page table dump code can race with concurrent modification of the
>> kernel page tables. When a leaf entries are modified concurrently, the dump
>> code ma
On 09/13/2019 11:53 AM, Christophe Leroy wrote:
> Fix build failure on powerpc.
>
> Fix preemption imbalance.
>
> Signed-off-by: Christophe Leroy
> ---
> mm/arch_pgtable_test.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/mm/arch_pgtable_test.c b/mm/arch_pgtable_test.c
>
On 09/13/2019 03:31 PM, Christophe Leroy wrote:
>
>
> Le 13/09/2019 à 11:02, Anshuman Khandual a écrit :
>>
>>>> +#if !defined(__PAGETABLE_PMD_FOLDED) && !defined(__ARCH_HAS_4LEVEL_HACK)
>>>
>>> #ifdefs have to be avoided as much as possibl
On 09/13/2019 03:39 PM, Catalin Marinas wrote:
> On Fri, Sep 13, 2019 at 11:28:01AM +0530, Anshuman Khandual wrote:
>> On 09/13/2019 01:45 AM, Catalin Marinas wrote:
>>> On Tue, Sep 03, 2019 at 03:15:58PM +0530, Anshuman Khandual wrote:
>>>> @@ -770,6 +1022,28 @@
On 09/16/2019 02:20 PM, Anshuman Khandual wrote:
>
>
> On 09/16/2019 12:06 PM, Mike Rapoport wrote:
>> On Mon, Sep 16, 2019 at 11:17:37AM +0530, Anshuman Khandual wrote:
>>> In add_memory_resource() the memory range to be hot added first gets into
>>> the m
On 09/16/2019 12:06 PM, Mike Rapoport wrote:
> On Mon, Sep 16, 2019 at 11:17:37AM +0530, Anshuman Khandual wrote:
>> In add_memory_resource() the memory range to be hot added first gets into
>> the memblock via memblock_add() before arch_add_memory() is called on it.
>> Re
required re-order between memblock_[free|remove]() and arch_remove_memory()
during memory hot-remove.
Cc: Andrew Morton
Cc: Oscar Salvador
Cc: Michal Hocko
Cc: David Hildenbrand
Cc: Pavel Tatashin
Cc: Dan Williams
Signed-off-by: Anshuman Khandual
---
Original patch https://lkml.org/lkml/2019/9
On 09/12/2019 10:44 PM, Christophe Leroy wrote:
>
>
> Le 12/09/2019 à 08:02, Anshuman Khandual a écrit :
>> This adds a test module which will validate architecture page table helpers
>> and accessors regarding compliance with generic MM semantics expectations.
>
On 09/13/2019 12:41 PM, Christophe Leroy wrote:
>
>
> Le 13/09/2019 à 09:03, Christophe Leroy a écrit :
>>
>>
>> Le 13/09/2019 à 08:58, Anshuman Khandual a écrit :
>>> On 09/13/2019 11:53 AM, Christophe Leroy wrote:
>>>> Fix build failur
On 09/13/2019 11:53 AM, Christophe Leroy wrote:
> Fix build failure on powerpc.
>
> Fix preemption imbalance.
>
> Signed-off-by: Christophe Leroy
> ---
> mm/arch_pgtable_test.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/mm/arch_pgtable_test.c b/mm/arch_pgtable_test.c
> index
On 09/12/2019 08:12 PM, Christophe Leroy wrote:
> Hi,
>
> I didn't get patch 1 of this series, and it is not on linuxppc-dev patchwork
> either. Can you resend ?
Its there on linux-mm patchwork and copied on linux-kernel@vger.kernel.org
as well. The CC list for the first patch was different
On 09/13/2019 01:45 AM, Catalin Marinas wrote:
> Hi Anshuman,
>
> Thanks for the details on the need for removing the page tables and
> vmemmap backing. Some comments on the code below.
>
> On Tue, Sep 03, 2019 at 03:15:58PM +0530, Anshuman Khandual wrote:
>> --- a/arch
On 09/12/2019 04:30 PM, Kirill A. Shutemov wrote:
> On Thu, Sep 12, 2019 at 11:32:53AM +0530, Anshuman Khandual wrote:
>> +MODULE_LICENSE("GPL v2");
>> +MODULE_AUTHOR("Anshuman Khandual ");
>> +MODULE_DESCRIPTION("Test architecture page table helpe
On 09/12/2019 09:58 AM, Anshuman Khandual wrote:
>
> On 09/10/2019 09:47 PM, Catalin Marinas wrote:
>> On Tue, Sep 03, 2019 at 03:15:58PM +0530, Anshuman Khandual wrote:
>>> @@ -770,6 +1022,28 @@ int __meminit vmemmap_populate(unsigned long start,
>>> unsigned
kernel.org
Suggested-by: Catalin Marinas
Signed-off-by: Anshuman Khandual
---
arch/x86/include/asm/pgtable_64_types.h | 2 +
mm/Kconfig.debug| 14 +
mm/Makefile | 1 +
mm/arch_pgtable_test.c | 429 +++
memory block. In the future such methods might have other use cases
as well. So alloc_gigantic_page() has been split carving out actual memory
allocation method and made available via new alloc_gigantic_page_order().
Cc: Mike Kravetz
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman
nel.org
Cc: linux-kernel@vger.kernel.org
Anshuman Khandual (2):
mm/hugetlb: Make alloc_gigantic_page() available for general use
mm/pgtable/debug: Add test validating architecture page table helpers
arch/x86/include/asm/pgtable_64_types.h | 2 +
include/linux/hugetlb.h |
On 09/10/2019 09:47 PM, Catalin Marinas wrote:
> On Tue, Sep 03, 2019 at 03:15:58PM +0530, Anshuman Khandual wrote:
>> @@ -770,6 +1022,28 @@ int __meminit vmemmap_populate(unsigned long start,
>> unsigned long end, int node,
>> void vmemmap_free(unsigned long sta
On 09/10/2019 10:15 AM, Christophe Leroy wrote:
>
>
> On 09/10/2019 03:56 AM, Anshuman Khandual wrote:
>>
>>
>> On 09/09/2019 08:43 PM, Kirill A. Shutemov wrote:
>>> On Mon, Sep 09, 2019 at 11:56:50AM +0530, Anshuman Khandual wrote:
>>>>
>>
On 09/09/2019 08:43 PM, Kirill A. Shutemov wrote:
> On Mon, Sep 09, 2019 at 11:56:50AM +0530, Anshuman Khandual wrote:
>>
>>
>> On 09/07/2019 12:33 AM, Gerald Schaefer wrote:
>>> On Fri, 6 Sep 2019 11:58:59 +0530
>>> Anshuman Khandual wrote:
>>&
On 09/07/2019 12:33 AM, Gerald Schaefer wrote:
> On Fri, 6 Sep 2019 11:58:59 +0530
> Anshuman Khandual wrote:
>
>> On 09/05/2019 10:36 PM, Gerald Schaefer wrote:
>>> On Thu, 5 Sep 2019 14:48:14 +0530
>>> Anshuman Khandual wrote:
>>>
>
On 09/05/2019 02:29 PM, Kirill A. Shutemov wrote:
> On Thu, Sep 05, 2019 at 01:48:27PM +0530, Anshuman Khandual wrote:
>>>> +#define VADDR_TEST(PGDIR_SIZE + PUD_SIZE + PMD_SIZE + PAGE_SIZE)
>>>
>>> What is special about this address? How do you k
On 09/05/2019 10:36 PM, Gerald Schaefer wrote:
> On Thu, 5 Sep 2019 14:48:14 +0530
> Anshuman Khandual wrote:
>
>>> [...]
>>>> +
>>>> +#if !defined(__PAGETABLE_PMD_FOLDED) && !defined(__ARCH_HAS_4LEVEL_HACK)
>>>> +static
On 09/05/2019 01:46 AM, Gerald Schaefer wrote:
> On Tue, 3 Sep 2019 13:31:46 +0530
> Anshuman Khandual wrote:
>
>> This adds a test module which will validate architecture page table helpers
>> and accessors regarding compliance with generic MM semantics expectatio
On 09/04/2019 07:49 PM, Kirill A. Shutemov wrote:
> On Tue, Sep 03, 2019 at 01:31:46PM +0530, Anshuman Khandual wrote:
>> This adds a test module which will validate architecture page table helpers
>> and accessors regarding compliance with generic MM semantics expectations.
&g
On 09/04/2019 01:46 PM, David Hildenbrand wrote:
> On 03.09.19 11:45, Anshuman Khandual wrote:
>> Memory hot remove uses get_nid_for_pfn() while tearing down linked sysfs
>> entries between memory block and node. It first checks pfn validity with
>> pfn_valid_within(
us a note to
> help improve the system]
>
> url:
> https://github.com/0day-ci/linux/commits/Anshuman-Khandual/mm-debug-Add-tests-for-architecture-exported-page-table-helpers/20190903-162959
> config: m68k-allmodconfig (attached as .config)
> compiler: m68k-linux-gcc (GCC) 7.4
On 09/04/2019 10:27 AM, Justin He (Arm Technology China) wrote:
> Hi Anshuman, thanks for the comments, see below please
>
>> -Original Message-----
>> From: Anshuman Khandual
>> Sent: 2019年9月4日 12:38
>> To: Justin He (Arm Technology China) ; Andrew
>>
On 09/04/2019 08:49 AM, Anshuman Khandual wrote:
> /*
>* This really shouldn't fail, because the page is there
>* in the page tables. But it might just be unreadable,
>* in which case we just give up and fil
On 09/04/2019 06:28 AM, Jia He wrote:
> When we tested pmdk unit test [1] vmmalloc_fork TEST1 in arm64 guest, there
> will be a double page fault in __copy_from_user_inatomic of cow_user_page.
>
> Below call trace is from arm64 do_page_fault for debugging purpose
> [ 110.016195] Call trace:
> [
with ARCH_ENABLE_MEMORY_HOTREMOVE.
This implementation is overall inspired from kernel page table tear down
procedure on X86 architecture.
Acked-by: Steve Capper
Acked-by: David Hildenbrand
Signed-off-by: Anshuman Khandual
---
arch/arm64/Kconfig | 3 +
arch/arm64/include/asm/memory.h | 1 +
arch/arm64
will be enabled by a subsequent patch. To avoid racing with
this, take the memory hotplug lock when walking the kernel page table.
Acked-by: David Hildenbrand
Acked-by: Mark Rutland
Signed-off-by: Anshuman Khandual
---
arch/arm64/mm/ptdump_debugfs.c | 4
1 file changed, 4 insertions(+)
diff --git
nbrand
Reviewed-by: Oscar Salvador
Acked-by: Mark Rutland
Acked-by: Michal Hocko
Signed-off-by: Anshuman Khandual
---
mm/memory_hotplug.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index c73f09913165..355c466e0621 100644
--
gtable_page_dtor() for linear mapping page table
pages and updated all relevant functions
Changes in V1: (https://lkml.org/lkml/2019/4/3/28)
References:
[1] https://lkml.org/lkml/2019/5/28/584
[2] https://lkml.org/lkml/2019/6/11/709
Anshuman Khandual (3):
mm/hotplug: Reorder memblock_[free
ux-arm-ker...@lists.infradead.org
Cc: linux-i...@vger.kernel.org
Cc: linuxppc-...@lists.ozlabs.org
Cc: linux-s...@vger.kernel.org
Cc: linux...@vger.kernel.org
Cc: sparcli...@vger.kernel.org
Cc: x...@kernel.org
Cc: linux-kernel@vger.kernel.org
Suggested-by: Catalin Marinas
Signed-off-by: Anshuma
nel.org
Cc: linux...@vger.kernel.org
Cc: sparcli...@vger.kernel.org
Cc: x...@kernel.org
Cc: linux-kernel@vger.kernel.org
Anshuman Khandual (1):
mm/pgtable/debug: Add test validating architecture page table helpers
mm/Kconfig.debug | 14 ++
mm/Makefile| 1 +
mm/arch_pgtable_te
On 08/26/2019 06:43 PM, Matthew Wilcox wrote:
> On Mon, Aug 26, 2019 at 08:07:13AM +0530, Anshuman Khandual wrote:
>> On 08/09/2019 07:22 PM, Matthew Wilcox wrote:
>>> On Fri, Aug 09, 2019 at 04:05:07PM +0530, Anshuman Khandual wrote:
>>>> On 08/09/2019
On 08/09/2019 03:46 PM, Matthew Wilcox wrote:
> On Fri, Aug 09, 2019 at 01:03:17PM +0530, Anshuman Khandual wrote:
>> Should alloc_gigantic_page() be made available as an interface for general
>> use in the kernel. The test module here uses very similar implementation
d-off-by: Wei Yang
Looks right.
With this applied, memory hot add still works on arm64.
Reviewed-by: Anshuman Khandual
> ---
> mm/sparse.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/sparse.c b/mm/sparse.c
> index 72f010d9bff5..95158a148cd1 1
y: Catalin Marinas
Signed-off-by: Anshuman Khandual
---
mm/Kconfig.debug | 14 ++
mm/Makefile| 1 +
mm/arch_pgtable_test.c | 400 +
3 files changed, 415 insertions(+)
create mode 100644 mm/arch_pgtable_test.c
diff --git a/mm/Kconfig.
.org
Cc: x...@kernel.org
Cc: linux-kernel@vger.kernel.org
Anshuman Khandual (1):
mm/pgtable/debug: Add test validating architecture page table helpers
mm/Kconfig.debug | 14 ++
mm/Makefile| 1 +
mm/arch_pgtable_test.c | 400 +
3 files ch
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