On Thu, Mar 06, 2025 at 12:24:21AM +, Benno Lossin wrote:
> On Thu Mar 6, 2025 at 12:57 AM CET, Danilo Krummrich wrote:
> > On Wed, Mar 05, 2025 at 11:36:54PM +, Benno Lossin wrote:
> >> On Wed Mar 5, 2025 at 11:38 PM CET, Danilo Krummrich wrote:
> >> > On Wed, Mar 05, 2025 at 10:30:31PM +0
On Thu, Mar 06, 2025 at 01:27:19AM +, Benno Lossin wrote:
> On Thu Mar 6, 2025 at 2:04 AM CET, Danilo Krummrich wrote:
> > On Thu, Mar 06, 2025 at 12:31:14AM +, Benno Lossin wrote:
> >> On Tue Mar 4, 2025 at 6:34 PM CET, Danilo Krummrich wrote:
> >>
> >> > +#[macro_export]
> >> > +macro_rul
This patch series adds support for THP migration of zone device pages.
To do so, the patches implement support for folio zone device pages
by adding support for setting up larger order pages.
These patches build on the earlier posts by Ralph Campbell [1]
Two new flags are added in vma_migration t
Add flags to mark zone device migration pages.
MIGRATE_VMA_SELECT_COMPOUND will be used to select THP pages during
migrate_vma_setup() and MIGRATE_PFN_COMPOUND will make migrating
device pages as compound pages during device pfn migration.
Signed-off-by: Balbir Singh
---
include/linux/migrate.h
On Thu, Mar 06, 2025 at 01:35:52AM +, Benno Lossin wrote:
> On Thu Mar 6, 2025 at 2:29 AM CET, Danilo Krummrich wrote:
> > On Thu, Mar 06, 2025 at 12:24:21AM +, Benno Lossin wrote:
> >> On Thu Mar 6, 2025 at 12:57 AM CET, Danilo Krummrich wrote:
> >> > On Wed, Mar 05, 2025 at 11:36:54PM +00
Enhance the hmm test driver (lib/test_hmm) with support for
THP pages.
A new pool of free_folios() has now been added to the dmirror
device, which can be allocated when a request for a THP zone
device private page is made.
Add compound page awareness to the allocation function during
normal migra
When a zone device page is split (via huge pmd folio split). The
driver callback for folio_split is invoked to let the device driver
know that the folio size has been split into a smaller order.
The HMM test driver has been updated to handle the split, since the
test driver uses backing pages, it
Support splitting pages during THP zone device migration as needed.
The common case that arises is that after setup, during migrate
the destination might not be able to allocate MIGRATE_PFN_COMPOUND
pages.
Add a new routine migrate_vma_split_pages() to support the splitting
of already isolated pag
When the CPU touches a zone device THP entry, the data needs to
be migrated back to the CPU, call migrate_to_ram() on these pages
via do_huge_pmd_device_private() fault handling helper.
Signed-off-by: Balbir Singh
---
include/linux/huge_mm.h | 7 +++
mm/huge_memory.c| 35 +++
migrate_device code paths go through the collect, setup
and finalize phases of migration. Support for MIGRATE_PFN_COMPOUND
was added earlier in the series to mark THP pages as
MIGRATE_PFN_COMPOUND.
The entries in src and dst arrays passed to these functions still
remain at a PAGE_SIZE granularity.
Change the code to add support for MIGRATE_VMA_SELECT_COMPOUND
and appropriately handling page sizes in the migrate/evict
code paths.
Signed-off-by: Balbir Singh
---
drivers/gpu/drm/nouveau/nouveau_dmem.c | 244 +
drivers/gpu/drm/nouveau/nouveau_svm.c | 6 +-
drivers/g
Add a new flag HMM_DMIRROR_FLAG_FAIL_ALLOC to emulate
failure of allocating a large page. This tests the code paths
involving split migration.
Signed-off-by: Balbir Singh
---
lib/test_hmm.c | 12 +++-
lib/test_hmm_uapi.h | 3 +++
2 files changed, 14 insertions(+), 1 deletion(-)
di
Add new tests for migrating anon THP pages, including anon_huge,
anon_huge_zero and error cases involving forced splitting of pages
during migration.
Signed-off-by: Balbir Singh
---
tools/testing/selftests/mm/hmm-tests.c | 407 +
1 file changed, 407 insertions(+)
diff --
Add routines to support allocation of large order zone device folios
and helper functions for zone device folios, to check if a folio is
device private and helpers for setting zone device data.
When large folios are used, the existing page_free() callback in
pgmap is called when the folio is freed
On Thu, Mar 06, 2025 at 12:31:14AM +, Benno Lossin wrote:
> On Tue Mar 4, 2025 at 6:34 PM CET, Danilo Krummrich wrote:
>
> > +#[macro_export]
> > +macro_rules! module_firmware {
> > +($($builder:tt)*) => {
>
> This should probably be `$builder:expr` instead.
That doesn't work, the compil
On Wed, Mar 05, 2025 at 08:30:34AM +0100, Simona Vetter wrote:
> - developers who want to quickly test new driver versions without full
> reboot. They're often preferring convenience over correctness, like with
> the removal of module refcounting that's strictly needed but means they
> first
On Tue, Mar 04, 2025 at 06:34:47PM +0100, Danilo Krummrich wrote:
> Danilo Krummrich (5):
> rust: module: add type `LocalModule`
> rust: firmware: introduce `firmware::ModInfoBuilder`
> rust: firmware: add `module_firmware!` macro
Greg, Luis, Russ, any objections on me taking the two firmwar
On Wed, Mar 05, 2025 at 10:30:31PM +, Benno Lossin wrote:
> On Tue Mar 4, 2025 at 6:34 PM CET, Danilo Krummrich wrote:
> > The `firmware` field of the `module!` only accepts literal strings,
> > which is due to the fact that it is implemented as a proc macro.
> >
> > Some drivers require a lot
On Wed, Mar 05, 2025 at 08:56:42PM +0100, Danilo Krummrich wrote:
> On Tue, Mar 04, 2025 at 06:34:47PM +0100, Danilo Krummrich wrote:
> > Danilo Krummrich (5):
> > rust: module: add type `LocalModule`
> > rust: firmware: introduce `firmware::ModInfoBuilder`
> > rust: firmware: add `module_fir
On Wed, Mar 05, 2025 at 03:27:13PM -0800, Luis Chamberlain wrote:
> On Wed, Mar 05, 2025 at 08:56:42PM +0100, Danilo Krummrich wrote:
> > On Tue, Mar 04, 2025 at 06:34:47PM +0100, Danilo Krummrich wrote:
> > > Danilo Krummrich (5):
> > > rust: module: add type `LocalModule`
> > > rust: firmware
On Wed, Mar 05, 2025 at 11:36:54PM +, Benno Lossin wrote:
> On Wed Mar 5, 2025 at 11:38 PM CET, Danilo Krummrich wrote:
> > On Wed, Mar 05, 2025 at 10:30:31PM +, Benno Lossin wrote:
> >> On Tue Mar 4, 2025 at 6:34 PM CET, Danilo Krummrich wrote:
> >> > +/// Push an additional path compo
On Thu, Mar 06, 2025 at 12:40:44AM +0100, Danilo Krummrich wrote:
> On Wed, Mar 05, 2025 at 03:27:13PM -0800, Luis Chamberlain wrote:
> > On Wed, Mar 05, 2025 at 08:56:42PM +0100, Danilo Krummrich wrote:
> > > On Tue, Mar 04, 2025 at 06:34:47PM +0100, Danilo Krummrich wrote:
> > > > Danilo Krummric
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