On 31/07/2019 18:05, Dave Hansen wrote:
On 7/23/19 10:58 AM, Andrey Konovalov wrote:
+long set_tagged_addr_ctrl(unsigned long arg)
+{
+ if (!tagged_addr_prctl_allowed)
+ return -EINVAL;
+ if (is_compat_task())
+ return -EINVAL;
+ if (arg &
On 31/07/2019 17:50, Dave Hansen wrote:
On 7/23/19 10:58 AM, Andrey Konovalov wrote:
The mmap and mremap (only new_addr) syscalls do not currently accept
tagged addresses. Architectures may interpret the tag as a background
colour for the corresponding vma.
What the heck is a "background
On 22/03/2019 12:04, Catalin Marinas wrote:
On Wed, Mar 20, 2019 at 03:51:23PM +0100, 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.
On 22/03/2019 16:07, Catalin Marinas wrote:
On Wed, Mar 20, 2019 at 03:51:31PM +0100, 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.
On 22/03/2019 15:59, Catalin Marinas wrote:
On Wed, Mar 20, 2019 at 03:51:28PM +0100, 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.
On 20/03/2019 14:51, 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.
prctl_set_mm() and prctl_set_mm_map() use provided user pointers for
