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authorKhalid Aziz <khalid.aziz@oracle.com>2018-02-21 10:15:49 -0700
committerDavid S. Miller <davem@davemloft.net>2018-03-18 07:38:47 -0700
commit9035cf9a97e429e6b5291841da81c433879f5658 (patch)
treed18593bc9412efa453a2b1e24ff860bfcb70ea9f /include/linux/mman.h
parentc6202ca764ac7b3728e29bca616567beb57fbac7 (diff)
mm: Add address parameter to arch_validate_prot()
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@oracle.com> Cc: Khalid Aziz <khalid@gonehiking.org> Reviewed-by: Anthony Yznaga <anthony.yznaga@oracle.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/mman.h')
-rw-r--r--include/linux/mman.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/mman.h b/include/linux/mman.h
index 6a4d1caaff5c..4b08e9c9c538 100644
--- a/include/linux/mman.h
+++ b/include/linux/mman.h
@@ -92,7 +92,7 @@ static inline void vm_unacct_memory(long pages)
*
* Returns true if the prot flags are valid
*/
-static inline bool arch_validate_prot(unsigned long prot)
+static inline bool arch_validate_prot(unsigned long prot, unsigned long addr)
{
return (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM)) == 0;
}