[PATCH v12 07/11] mm: Add address parameter to arch_validate_prot()

Andrew Morton akpm at linux-foundation.org
Wed Mar 7 09:48:07 AEDT 2018

On Wed, 21 Feb 2018 10:15:49 -0700 Khalid Aziz <khalid.aziz at oracle.com> wrote:

> A protection flag may not be valid across entire address space and
> hence arch_validate_prot() might need the address a protection bit is
> being set on to ensure it is a valid protection flag. For example, sparc
> processors support memory corruption detection (as part of ADI feature)
> flag on memory addresses mapped on to physical RAM but not on PFN mapped
> pages or addresses mapped on to devices. This patch adds address to the
> parameters being passed to arch_validate_prot() so protection bits can
> be validated in the relevant context.
> Signed-off-by: Khalid Aziz <khalid.aziz at oracle.com>
> Cc: Khalid Aziz <khalid at gonehiking.org>
> Reviewed-by: Anthony Yznaga <anthony.yznaga at oracle.com>

Acked-by: Andrew Morton <akpm at linux-foundation.org>

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