ups, which can only by done with
> untagged pointers.
>
> This patch untags user pointers in radeon_gem_userptr_ioctl().
>
> Suggested-by: Felix Kuehling
> Acked-by: Felix Kuehling
> Signed-off-by: Andrey Konovalov
> ---
Reviewed-by: Khalid Aziz
> drivers/gpu/drm/rade
to not be specific to
arm64.
Reviewed-by: Khalid Aziz
> drivers/media/v4l2-core/videobuf-dma-contig.c | 9 +
> 1 file changed, 5 insertions(+), 4 deletions(-)
> exact_copy_from_user
> diff --git a/drivers/media/v4l2-core/videobuf-dma-contig.c
> b/drivers/medi
before subtracting.
>
> Reviewed-by: Kees Cook
> Reviewed-by: Catalin Marinas
> Signed-off-by: Andrey Konovalov
> ---
Please update commit log to make it not arm64 specific since this change
affects other architectures as well. Other than that,
Reviewed-by: Khalid Aziz
> fs/name
e to commit log in my previous email:
Reviewed-by: Khalid Aziz
> mm/frame_vector.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/mm/frame_vector.c b/mm/frame_vector.c
> index c64dca6e27c2..c431ca81dad5 100644
> --- a/mm/frame_vector.c
> +++ b/mm/frame_vector
On 6/19/19 9:55 AM, Khalid Aziz wrote:
> On 6/12/19 5:43 AM, Andrey Konovalov wrote:
>> This patch is a part of a series that extends arm64 kernel ABI to allow to
>> pass tagged user pointers (with the top byte set to something else other
>> than 0x00) as syscall arguments.
&g
s.
>
> Reviewed-by: Kees Cook
> Reviewed-by: Catalin Marinas
> Signed-off-by: Andrey Konovalov
> ---
Reviewed-by: Khalid Aziz
> mm/gup.c | 4
> 1 file changed, 4 insertions(+)
>
> diff --git a/mm/gup.c b/mm/gup.c
> index ddde097cf9e4..c37df3d455a2 100644
> --
ur for the
> corresponding vma.
>
> Reviewed-by: Catalin Marinas
> Reviewed-by: Kees Cook
> Signed-off-by: Andrey Konovalov
> ---
Reviewed-by: Khalid Aziz
> mm/madvise.c | 2 ++
> mm/mempolicy.c | 3 +++
> mm/migrate.c | 2 +-
> mm/mincore.c | 2 ++
> mm/mloc
On 6/3/19 10:55 AM, Andrey Konovalov wrote:
> This patch is a part of a series that extends arm64 kernel ABI to allow to
> pass tagged user pointers (with the top byte set to something else other
> than 0x00) as syscall arguments.
>
> do_pages_move() is used in the implementation of the
ters to perform
> validity checks, but then uses them as is to perform user memory accesses.
>
> Reviewed-by: Catalin Marinas
> Signed-off-by: Andrey Konovalov
> ---
> lib/strncpy_from_user.c | 3 ++-
> lib/strnlen_user.c | 3 ++-
> 2 files changed, 4 insertions(
On 6/3/19 11:29 AM, Christoph Hellwig wrote:
> On Mon, Jun 03, 2019 at 11:24:35AM -0600, Khalid Aziz wrote:
>> On 6/3/19 11:06 AM, Andrey Konovalov wrote:
>>> On Mon, Jun 3, 2019 at 7:04 PM Khalid Aziz wrote:
>>>> Andrey,
>>>>
>>>> This pat
On 6/3/19 11:06 AM, Andrey Konovalov wrote:
> On Mon, Jun 3, 2019 at 7:04 PM Khalid Aziz wrote:
>> Andrey,
>>
>> This patch has now become part of the other patch series Chris Hellwig
>> has sent out -
>> <https://lore.kernel.org/lkml/20190601074959.14036-1
rchitectures.
>
> Define it as a noop for architectures other than arm64.
>
> Acked-by: Catalin Marinas
> Reviewed-by: Khalid Aziz
> Signed-off-by: Andrey Konovalov
> ---
> include/linux/mm.h | 4
> 1 file changed, 4 insertions(+)
>
> diff --git a/in
On 5/30/19 9:11 AM, Catalin Marinas wrote:
> On Wed, May 29, 2019 at 01:16:37PM -0600, Khalid Aziz wrote:
>> mmap() can return the same tagged address but I am uneasy about kernel
>> pre-coloring the pages. Database can mmap 100's of GB of memory. That is
>> lot of
On 5/29/19 8:20 AM, Catalin Marinas wrote:
> Hi Khalid,
>
> On Tue, May 28, 2019 at 05:33:04PM -0600, Khalid Aziz wrote:
>> On Tue, 2019-05-28 at 16:40 +0100, Catalin Marinas wrote:
>>> I think another aspect is how we define the ABI. Is allowing tags to
>>> mlock
ris started, there is a generic need
to untag addresses in kernel and this patch gets us ready for that.
Reviewed-by: Khalid Aziz
>
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 6b10c21630f5..44041df804a6 100644
> --- a/include/linux/mm.h
> +++ b/include/lin
On Tue, 2019-05-28 at 16:40 +0100, Catalin Marinas wrote:
> On Tue, May 28, 2019 at 03:54:11PM +0100, Andrew Murray wrote:
> > On Mon, May 27, 2019 at 03:37:20PM +0100, Catalin Marinas wrote:
> > > On Mon, May 06, 2019 at 06:30:51PM +0200, Andrey Konovalov wrote:
> > > > This patch is a part of a
On 5/24/19 4:11 AM, Catalin Marinas wrote:
> On Thu, May 23, 2019 at 03:49:05PM -0600, Khalid Aziz wrote:
>> On 5/23/19 2:11 PM, Catalin Marinas wrote:
>>> On Thu, May 23, 2019 at 11:51:40AM -0600, Khalid Aziz wrote:
>>>> On 5/21/19 6:04 PM, Kees Cook wrote:
>&g
On 5/23/19 2:11 PM, Catalin Marinas wrote:
> Hi Khalid,
>
> On Thu, May 23, 2019 at 11:51:40AM -0600, Khalid Aziz wrote:
>> On 5/21/19 6:04 PM, Kees Cook wrote:
>>> As an aside: I think Sparc ADI support in Linux actually side-stepped
>>> this[1] (i.e. chose &qu
On 5/23/19 2:11 PM, Catalin Marinas wrote:
> Hi Khalid,
>
> On Thu, May 23, 2019 at 11:51:40AM -0600, Khalid Aziz wrote:
>> On 5/21/19 6:04 PM, Kees Cook wrote:
>>> As an aside: I think Sparc ADI support in Linux actually side-stepped
>>> this[1] (i.e. chose &qu
On 5/21/19 6:04 PM, Kees Cook wrote:
> As an aside: I think Sparc ADI support in Linux actually side-stepped
> this[1] (i.e. chose "solution 1"): "All addresses passed to kernel must
> be non-ADI tagged addresses." (And sadly, "Kernel does not enable ADI
> for kernel code.") I think this was a
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