On Mon, Jan 24, 2022 at 01:08:26PM +0100, Christian König wrote:
> Am 24.01.22 um 02:54 schrieb ira.we...@intel.com:
> > From: Ira Weiny
> >
> > Changes from V1:
> > Use memcpy_to_page() where appropriate
> > Rebased to latest
> >
> > The
From: Ira Weiny
The default case leaves the buffer object mapped in error.
Add amdgpu_bo_kunmap() to that case to ensure the mapping is cleaned up.
Signed-off-by: Ira Weiny
---
NOTE: It seems like this function could use a fair bit of refactoring
but this is the easiest way to fix the actual
From: Ira Weiny
Changes from V1:
Use memcpy_to_page() where appropriate
Rebased to latest
The kmap() call may cause issues with work being done with persistent memory.
For this and other reasons it is being deprecated.
This series starts by converting the last easy kmap() uses
From: Ira Weiny
The default case leaves the buffer object mapped in error.
Add radeon_bo_kunmap() to that case to ensure the mapping is cleaned up.
Signed-off-by: Ira Weiny
---
NOTE: It seems like this function could use a fair bit of refactoring
but this is the easiest way to fix the actual
From: Ira Weiny
kmap() is being deprecated. These maps are thread local and can be
replaced with kmap_local_page().
Replace kmap() with kmap_local_page()
Signed-off-by: Ira Weiny
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff
From: Ira Weiny
kmap() is being deprecated. So this comment could be misleading in the
future.
Change this comment to point to using kmap_local_page(). While here
remove 'we' from the comment.
Signed-off-by: Ira Weiny
---
drivers/gpu/drm/msm/msm_gem_submit.c | 4 ++--
1 file
From: Ira Weiny
kmap() is being deprecated and these usages are all local to the thread
so there is no reason kmap_local_page() can't be used.
Replace kmap() calls with kmap_local_page().
Signed-off-by: Ira Weiny
---
Changes for V2:
From Christoph Helwig
Prefer the u
From: Ira Weiny
kmap() is being deprecated and these instances are easy to convert to
kmap_local_page().
Furthermore, in gma_crtc_cursor_set() use the memcpy_from_page() helper
instead of an open coded use of kmap_local_page().
Signed-off-by: Ira Weiny
---
drivers/gpu/drm/gma500
From: Ira Weiny
kmap() is being deprecated and this usage is local to the thread. Use
kmap_local_page() instead.
Signed-off-by: Ira Weiny
---
drivers/gpu/drm/radeon/radeon_ttm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c
b
On Thu, Jan 20, 2022 at 04:48:50PM +0100, Daniel Vetter wrote:
> On Thu, Jan 20, 2022 at 09:16:35AM +0100, Christian König wrote:
> > Am 20.01.22 um 00:55 schrieb Ira Weiny:
> > > On Wed, Jan 19, 2022 at 06:24:22PM +0100, Daniel Vetter wrote:
> > > > On Wed, Jan 19,
On Wed, Jan 19, 2022 at 06:24:22PM +0100, Daniel Vetter wrote:
> On Wed, Jan 19, 2022 at 08:53:56AM -0800, Ira Weiny wrote:
> > On Fri, Dec 10, 2021 at 03:23:57PM -0800, 'Ira Weiny' wrote:
> > > From: Ira Weiny
> > >
> > > This series sta
On Fri, Dec 10, 2021 at 03:23:57PM -0800, 'Ira Weiny' wrote:
> From: Ira Weiny
>
> This series starts by converting the last easy kmap() uses to
> kmap_local_page().
>
> There is one more call to kmap() wrapped in ttm_bo_kmap_ttm(). Unfortunately,
> ttm_bo_kmap
From: Ira Weiny
kmap() is being deprecated and these usages are all local to the thread
so there is no reason kmap_local_page() can't be used.
Replace kmap() calls with kmap_local_page().
Signed-off-by: Ira Weiny
---
NOTE: I'm sending as a follow on to the V1 patch. Please let
On Tue, Dec 14, 2021 at 08:09:29AM +0100, Christian König wrote:
> Am 14.12.21 um 04:37 schrieb Ira Weiny:
> > On Mon, Dec 13, 2021 at 09:37:32PM +0100, Christian König wrote:
> > > Am 11.12.21 um 00:24 schrieb ira.we...@intel.com:
> > > > From: Ira Weiny
> >
On Mon, Dec 13, 2021 at 09:37:32PM +0100, Christian König wrote:
> Am 11.12.21 um 00:24 schrieb ira.we...@intel.com:
> > From: Ira Weiny
> >
> > The default case leaves the buffer object mapped in error.
> >
> > Add amdgpu_bo_kunmap() to that case to ensure th
On Mon, Dec 13, 2021 at 01:04:07AM -0800, Christoph Hellwig wrote:
> On Fri, Dec 10, 2021 at 03:23:58PM -0800, ira.we...@intel.com wrote:
> > - vaddr = kmap(page);
> > + vaddr = kmap_local_page(page);
> > memcpy(vaddr, data, len);
> > - kunmap(page);
> > +
On Mon, Dec 13, 2021 at 02:39:59PM +0200, Ville Syrjälä wrote:
> On Fri, Dec 10, 2021 at 03:23:58PM -0800, ira.we...@intel.com wrote:
> > From: Ira Weiny
> >
> > kmap() is being deprecated and these usages are all local to the thread
> > so there is no reason kmap
From: Ira Weiny
kmap() is being deprecated. So this comment could be misleading in the
future.
Change this comment to point to using kmap_local_page(). While here
remove 'we' from the comment.
Signed-off-by: Ira Weiny
---
drivers/gpu/drm/msm/msm_gem_submit.c | 4 ++--
1 file
From: Ira Weiny
kmap() is being deprecated and these instances are easy to convert to
kmap_local_page().
Furthermore, in gma_crtc_cursor_set() use the memcpy_from_page() helper
instead of an open coded use of kmap_local_page().
Signed-off-by: Ira Weiny
---
drivers/gpu/drm/gma500
From: Ira Weiny
The default case leaves the buffer object mapped in error.
Add amdgpu_bo_kunmap() to that case to ensure the mapping is cleaned up.
Signed-off-by: Ira Weiny
---
NOTE: It seems like this function could use a fair bit of refactoring
but this is the easiest way to fix the actual
From: Ira Weiny
This series starts by converting the last easy kmap() uses to
kmap_local_page().
There is one more call to kmap() wrapped in ttm_bo_kmap_ttm(). Unfortunately,
ttm_bo_kmap_ttm() is called in a number of different ways including some which
are not thread local. I have a patch to
From: Ira Weiny
The default case leaves the buffer object mapped in error.
Add radeon_bo_kunmap() to that case to ensure the mapping is cleaned up.
Signed-off-by: Ira Weiny
---
NOTE: It seems like this function could use a fair bit of refactoring
but this is the easiest way to fix the actual
From: Ira Weiny
kmap() is being deprecated. These maps are thread local and can be
replaced with kmap_local_page().
Replace kmap() with kmap_local_page()
Signed-off-by: Ira Weiny
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff
From: Ira Weiny
kmap() is being deprecated and this usage is local to the thread. Use
kmap_local_page() instead.
Signed-off-by: Ira Weiny
---
drivers/gpu/drm/radeon/radeon_ttm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c
b
From: Ira Weiny
kmap() is being deprecated and these usages are all local to the thread
so there is no reason kmap_local_page() can't be used.
Replace kmap() calls with kmap_local_page().
Signed-off-by: Ira Weiny
---
drivers/gpu/drm/i915/gem/i915_gem_shmem.c | 4 ++--
driver
On Tue, Nov 10, 2020 at 02:13:56AM +0100, Thomas Gleixner wrote:
> Ira,
>
> On Fri, Oct 09 2020 at 12:49, ira weiny wrote:
> > From: Ira Weiny
> >
> > To correctly support the semantics of kmap() with Kernel protection keys
> > (PKS), kmap() may be required t
On Tue, Oct 13, 2020 at 12:25:44PM +0100, Christoph Hellwig wrote:
> > - kaddr = kmap(pp);
> > + kaddr = kmap_thread(pp);
> > memcpy(kaddr, vip->vii_immed.vi_immed + offset, PAGE_SIZE);
> > - kunmap(pp);
> > + kunmap_thread(pp);
>
> You only Cced me on this particular patch, which mean
On Tue, Oct 13, 2020 at 08:36:43PM +0100, Matthew Wilcox wrote:
> On Tue, Oct 13, 2020 at 11:44:29AM -0700, Dan Williams wrote:
> > On Fri, Oct 9, 2020 at 12:52 PM wrote:
> > >
> > > From: Ira Weiny
> > >
> > > The kmap() calls in this FS are loca
On Tue, Oct 13, 2020 at 09:01:49PM +0100, Al Viro wrote:
> On Tue, Oct 13, 2020 at 08:36:43PM +0100, Matthew Wilcox wrote:
>
> > static inline void copy_to_highpage(struct page *to, void *vfrom, unsigned
> > int size)
> > {
> > char *vto = kmap_atomic(to);
> >
> > memcpy(vto, vfrom, size
On Mon, Oct 12, 2020 at 09:02:54PM +0100, Matthew Wilcox wrote:
> On Mon, Oct 12, 2020 at 12:53:54PM -0700, Ira Weiny wrote:
> > On Mon, Oct 12, 2020 at 05:44:38PM +0100, Matthew Wilcox wrote:
> > > On Mon, Oct 12, 2020 at 09:28:29AM -0700, Dave Hansen wrote:
> > >
On Mon, Oct 12, 2020 at 05:44:38PM +0100, Matthew Wilcox wrote:
> On Mon, Oct 12, 2020 at 09:28:29AM -0700, Dave Hansen wrote:
> > kmap_atomic() is always preferred over kmap()/kmap_thread().
> > kmap_atomic() is _much_ more lightweight since its TLB invalidation is
> > always CPU-local and never b
On Fri, Oct 09, 2020 at 07:53:07PM -0700, John Hubbard wrote:
> On 10/9/20 12:50 PM, ira.we...@intel.com wrote:
> > From: Ira Weiny
> >
> > The pmem driver uses a cached virtual address to access its memory
> > directly. Because the nvdimm driver is well aware of the
On Sat, Oct 10, 2020 at 12:03:49AM +0200, Daniel Vetter wrote:
> On Fri, Oct 09, 2020 at 12:49:44PM -0700, ira.we...@intel.com wrote:
> > From: Ira Weiny
> >
> > These kmap() calls in the gpu stack are localized to a single thread.
> > To avoid the over head of glob
On Sat, Oct 10, 2020 at 10:20:34AM +0800, Coly Li wrote:
> On 2020/10/10 03:50, ira.we...@intel.com wrote:
> > From: Ira Weiny
> >
> > These kmap() calls are localized to a single thread. To avoid the over
> > head of global PKRS updates use the new kmap_thre
On Fri, Oct 09, 2020 at 06:30:36PM -0700, Eric Biggers wrote:
> On Sat, Oct 10, 2020 at 01:39:54AM +0100, Matthew Wilcox wrote:
> > On Fri, Oct 09, 2020 at 02:34:34PM -0700, Eric Biggers wrote:
> > > On Fri, Oct 09, 2020 at 12:49:57PM -0700, ira.we...@intel.com wrote:
> > > > The kmap() calls in th
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Greg Kroah-Hartman
Signed-off-by: Ira Weiny
---
drivers/misc/vmw_vmci/vmci_queue_pair.c | 12 ++--
1 file changed, 6 insertions
From: Ira Weiny
Most kmap() callers use the map within a single thread and have no need
for the protection domain to be enabled globally.
To differentiate these kmap users, new k[un]map_thread() calls were
introduced which are thread local.
To aid in debugging the new use of kmap_thread(), add
From: Ira Weiny
Some users, such as kmap(), sometimes requires PKS to be global.
However, updating all CPUs, and worse yet all threads is expensive.
Introduce a global PKRS state which is checked at critical times to
allow the state to enable access when global PKS is required. To
accomplish
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Ard Biesheuvel
Signed-off-by: Ira Weiny
---
drivers/firmware/efi/capsule-loader.c | 6 +++---
drivers/firmware/efi/capsule.c| 4
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Miklos Szeredi
Signed-off-by: Ira Weiny
---
fs/fuse/readdir.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over head of
global PKRS updates use the new kmap_thread() call.
Signed-off-by: Ira Weiny
---
fs/isofs/compress.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/isofs/compress.c b/fs
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Signed-off-by: Ira Weiny
---
arch/powerpc/mm/mem.c | 4 ++--
1 file changed, 2 insertions(+), 2
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Jan Kara
Cc: "Theodore Ts'o"
Cc: Randy Dunlap
Cc: Alex Shi
Signed-off-by: Ira Weiny
---
fs/reiserfs/journal.c |
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Signed-off-by: Ira Weiny
---
fs/romfs/super.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/romfs/super.c b
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Herbert Xu
Cc: Eric Biggers
Cc: Aditya Pakki
Signed-off-by: Ira Weiny
---
fs/ecryptfs/crypto.c | 8
fs/ecryptfs
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Signed-off-by: Ira Weiny
---
fs/hfsplus/bitmap.c | 20 -
fs/hfsplus/bnode.c | 102
From: Ira Weiny
Should a stray write in the kernel occur persistent memory is affected more
than regular memory. A write to the wrong area of memory could result in
latent data corruption which will will persist after a reboot. PKS provides a
nice way to restrict access to persistent memory
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Alexander Viro
Cc: Jens Axboe
Signed-off-by: Ira Weiny
---
fs/aio.c | 4 ++--
fs/binfmt_elf.c | 4 ++--
fs
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Signed-off-by: Ira Weiny
---
fs/hfs/bnode.c | 14 +++---
fs/hfs/btree.c | 20 ++--
2 files changed, 17
From: Ira Weiny
The kmap() calls in this driver are localized to a single thread. To
avoid the over head of global PKRS updates use the new kmap_thread()
call.
Cc: Luis Chamberlain
Signed-off-by: Ira Weiny
---
drivers/base/firmware_loader/fallback.c | 4 ++--
drivers/base/firmware_loader
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Signed-off-by: Ira Weiny
---
mm/memory.c | 8
mm/swapfile.c| 4 ++--
mm/userfaultfd.c | 4 ++--
3 files changed, 8 insertions
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: David Woodhouse
Cc: Richard Weinberger
Signed-off-by: Ira Weiny
---
fs/jffs2/file.c | 4 ++--
fs/jffs2/gc.c | 4 ++--
2 files
From: Ira Weiny
The kmap() calls in these drivers are localized to a single thread. To
avoid the over head of global PKRS updates use the new kmap_thread()
call.
Cc: "David S. Miller"
Cc: Jakub Kicinski
Cc: Jesse Brandeburg
Signed-off-by: Ira Weiny
---
drivers/net/ethernet
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Chris Mason
Cc: Josef Bacik
Cc: David Sterba
Signed-off-by: Ira Weiny
---
fs/btrfs/check-integrity.c | 4 ++--
fs/btrfs
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Bob Peterson
Cc: Andreas Gruenbacher
Signed-off-by: Ira Weiny
---
fs/gfs2/bmap.c | 4 ++--
fs/gfs2/ops_fstype.c | 4 ++--
2
From: Ira Weiny
To correctly support the semantics of kmap() with Kernel protection keys
(PKS), kmap() may be required to set the protections on multiple
processors (globally). Enabling PKS globally can be very expensive
depending on the requested operation. Furthermore, enabling a domain
From: Ira Weiny
The kmap() calls in these drivers are localized to a single thread. To
avoid the over head of global PKRS updates use the new kmap_thread()
call.
Cc: Mike Marciniszyn
Cc: Dennis Dalessandro
Cc: Doug Ledford
Cc: Jason Gunthorpe
Cc: Faisal Latif
Cc: Shiraz Saleem
Cc
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Steve French
Signed-off-by: Ira Weiny
---
fs/cifs/cifsencrypt.c | 6 +++---
fs/cifs/file.c| 16
fs/cifs
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Stefano Stabellini
Signed-off-by: Ira Weiny
---
drivers/xen/gntalloc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Christoph Hellwig
Signed-off-by: Ira Weiny
---
fs/freevxfs/vxfs_immed.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Greg Kroah-Hartman
Signed-off-by: Ira Weiny
---
drivers/staging/rts5208/rtsx_transport.c | 4 ++--
1 file changed, 2 insertions(+), 2
From: Ira Weiny
The pmem driver uses a cached virtual address to access its memory
directly. Because the nvdimm driver is well aware of the special
protections it has mapped memory with, we call dev_access_[en|dis]able()
around the direct pmem->virt_addr (pmem_addr) usage instead of
From: Ira Weiny
These kmap() calls in these drivers are localized to a single thread.
To avoid the over head of global PKRS updates use the new kmap_thread()
call.
Cc: "David S. Miller"
Cc: Jakub Kicinski
Cc: Alexey Kuznetsov
Cc: Hideaki YOSHIFUJI
Cc: Trond Myklebust
Cc: Anna Sch
From: Ira Weiny
The kmap() calls in this driver are localized to a single thread. To
avoid the over head of global PKRS updates use the new kmap_thread()
call.
Cc: Jens Axboe
Signed-off-by: Ira Weiny
---
drivers/block/drbd/drbd_main.c | 4 ++--
drivers/block/drbd/drbd_receiver.c | 12
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: David Howells
Signed-off-by: Ira Weiny
---
fs/cachefiles/rdwr.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff
From: Ira Weiny
Protecting against stray writes is particularly important for PMEM
because, unlike writes to anonymous memory, writes to PMEM persists
across a reboot. Thus data corruption could result in permanent loss of
data.
While stray writes are more serious than reads, protection is
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Ulf Hansson
Cc: Sascha Sommer
Signed-off-by: Ira Weiny
---
drivers/mmc/host/mmc_spi.c| 4 ++--
drivers/mmc/host/sdricoh_cs.c | 4
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Kirti Wankhede
Signed-off-by: Ira Weiny
---
samples/vfio-mdev/mbochs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Greg Kroah-Hartman
Signed-off-by: Ira Weiny
---
drivers/android/binder_alloc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions
From: Ira Weiny
dax_direct_access() is a special case of accessing pmem via a page
offset and without a struct page.
Because the dax driver is well aware of the special protections it has
mapped memory with, call dev_access_[en|dis]able() directly instead of
the unnecessary overhead of trying
From: Ira Weiny
Device managed memory exposes itself to the kernel direct map which
allows stray pointers to access these device memories.
Stray pointers to normal memory may result in a crash or other
undesirable behavior which, while unfortunate, are usually recoverable
with a reboot. Stray
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Miquel Raynal
Cc: Richard Weinberger
Cc: Vignesh Raghavendra
Signed-off-by: Ira Weiny
---
drivers/mtd/mtd_blkdevs.c | 12 ++--
1
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Alexander Viro
Cc: "Jérôme Glisse"
Cc: Martin KaFai Lau
Cc: Song Liu
Cc: Yonghong Song
Cc: Andrii Nakryiko
Cc: John Fastabe
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Richard Weinberger
Signed-off-by: Ira Weiny
---
fs/ubifs/file.c | 16
1 file changed, 8 insertions(+), 8 deletions
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Coly Li (maintainer:BCACHE (BLOCK LAYER CACHE))
Cc: Kent Overstreet (maintainer:BCACHE (BLOCK LAYER
CACHE))
Signed-off-by: Ira Weiny
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Trond Myklebust
Cc: Anna Schumaker
Signed-off-by: Ira Weiny
---
fs/nfs/dir.c | 20 ++--
1 file changed, 10
From: Ira Weiny
These kmap() calls in the gpu stack are localized to a single thread.
To avoid the over head of global PKRS updates use the new kmap_thread()
call.
Cc: David Airlie
Cc: Daniel Vetter
Cc: Patrik Jakobsson
Signed-off-by: Ira Weiny
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Nicolas Pitre
Signed-off-by: Ira Weiny
---
fs/cramfs/inode.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To
avoid the over head of global PKRS updates use the new kmap_thread()
call.
Cc: David Howells
Signed-off-by: Ira Weiny
---
fs/afs/dir.c | 16
fs/afs/dir_edit.c | 16
fs/afs
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Hans de Goede
Signed-off-by: Ira Weiny
---
fs/vboxsf/file.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Ryusuke Konishi
Signed-off-by: Ira Weiny
---
fs/nilfs2/alloc.c | 34 +-
fs/nilfs2/cpfile.c | 4
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Anton Altaparmakov
Signed-off-by: Ira Weiny
---
fs/ntfs/aops.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff
From: Ira Weiny
There are 3 places in namei.c where the equivalent of ext2_put_page() is
open coded. We want to use k[un]map_thread() instead of k[un]map() in
ext2_[get|put]_page().
Move ext2_put_page() to ext2.h and use it in namei.c in prep for
converting the k[un]map() code.
Cc: Jan Kara
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Gao Xiang
Cc: Chao Yu
Signed-off-by: Ira Weiny
---
fs/erofs/super.c | 4 ++--
fs/erofs/xattr.c | 4 ++--
2 files changed, 4
From: Ira Weiny
Device managed pages may have additional protections. These protections
need to be removed prior to valid use by kernel users.
Check for special treatment of device managed pages in kmap and take
action if needed. We use kmap as an interface for generic kernel code
because
From: Ira Weiny
These kmap() calls in this driver are localized to a single thread. To
avoid the over head of global PKRS updates use the new kmap_thread()
call.
Signed-off-by: Ira Weiny
---
drivers/target/target_core_iblock.c| 4 ++--
drivers/target/target_core_rd.c| 4
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: "James E.J. Bottomley"
Cc: "Martin K. Petersen"
Signed-off-by: Ira Weiny
---
drivers/scsi/ipr.c | 8
dr
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Damien Le Moal
Cc: Naohiro Aota
Signed-off-by: Ira Weiny
---
fs/zonefs/super.c | 4 ++--
1 file changed, 2 insertions(+), 2
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over
head of global PKRS update use the new kmap_thread() call instead.
Cc: Jan Kara
Signed-off-by: Ira Weiny
---
fs/ext2/dir.c | 2 +-
fs/ext2/ext2.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Jaegeuk Kim
Cc: Chao Yu
Signed-off-by: Ira Weiny
---
fs/f2fs/f2fs.h | 8
1 file changed, 4 insertions(+), 4 deletions
From: Ira Weiny
Now that PKS can be enabled globaly (for all threads) add a test which
spawns a thread and tests the same PKS functionality.
The test enables/disables PKS in 1 thread while attempting to access the
page in another thread. We use the same test array as in the 'local'
P
From: Ira Weiny
The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.
Cc: Jeff Dike
Cc: Richard Weinberger
Cc: Anton Ivanov
Signed-off-by: Ira Weiny
---
fs/hostfs/hostfs_kern.c | 12 ++--
1 file
From: Ira Weiny
This kmap() call is localized to a single thread. To avoid the over
head of global PKRS updates use the new kmap_thread() call.
Cc: Eric Biederman
Signed-off-by: Ira Weiny
---
kernel/kexec_core.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a
From: Ira Weiny
These kmap() calls are localized to a single thread. To avoid the over head of
global PKRS updates use the new kmap_thread() call.
Signed-off-by: Ira Weiny
---
fs/jffs2/file.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/jffs2/file.c b/fs/jffs2
On Wed, Aug 07, 2019 at 10:46:49AM +0200, Michal Hocko wrote:
> On Wed 07-08-19 10:37:26, Jan Kara wrote:
> > On Fri 02-08-19 12:14:09, John Hubbard wrote:
> > > On 8/2/19 7:52 AM, Jan Kara wrote:
> > > > On Fri 02-08-19 07:24:43, Matthew Wilcox wrote:
> > > > > On Fri, Aug 02, 2019 at 02:41:46PM +
t; required.
>
> Reviewed-by: Christoph Hellwig
> Cc: Matthew Wilcox
> Cc: Jan Kara
> Cc: Ira Weiny
> Cc: Jason Gunthorpe
> Signed-off-by: John Hubbard
> ---
> drivers/infiniband/core/umem.c | 5 +-
> drivers/infiniband/hw/hfi1/user_
LL;
> +
> + /* The range is now invalid, leave it poisoned. */
> + range->valid = false;
No need to set valid false again as you just did this 5 lines above.
Reviewed-by: Ira Weiny
> + memset(&range->hmm, POISON_INUSE, sizeof(range->hmm));
> }
>
th.
> - A valid hmm has a valid hmm->mm.
>
> Allowing the return value of wait_event_timeout() (along with its internal
> barriers) to compute the result of the function.
>
> Signed-off-by: Jason Gunthorpe
Reviewed-by: Ira Weiny
> ---
> v3
> - Simplify the wait_
xchange pattern.
>
> Also make the locking very easy to understand by only ever reading or
> writing mm->hmm while holding the write side of the mmap_sem.
>
> Signed-off-by: Jason Gunthorpe
Reviewed-by: Ira Weiny
> ---
> v2:
> - Fix error unwind of mmgrab (Jerome)
>
custom structure is a
good simplification IMO. So...
Reviewed-by: Ira Weiny
> ---
>
> I'm sending this out now since we are updating many of the HMM APIs
> and I think it will be useful.
>
>
> drivers/gpu/drm/nouveau/nouveau_svm.c | 4 ++--
> include
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