Madhusudanan Kandasamy eeb03a6eaa powerpc: Fail remap_4k_pfn() if PFN doesn't fit inside PTE ...

remap_4k_pfn() silently truncates upper bits of input 4K PFN
if it cannot be contained in PTE. This leads invalid memory mapping and could
result in a system crash when the memory is accessed. This patch fails
remap_4k_pfn() and returns -EINVAL if the input 4K PFN cannot be contained in
PTE.

V3 : Added parentheses to protect 'pfn' and entire macro as suggested by Brian.
V2 : Rewritten to avoid helper function as suggested by Stephen Rothwell.

Signed-off-by: Madhusudanan Kandasamy <kmadhu@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

2014-08-05 16:34:06 +10:00

..

asm

powerpc: Fail remap_4k_pfn() if PFN doesn't fit inside PTE

2014-08-05 16:34:06 +10:00

uapi/asm

powerpc: Add AT_HWCAP2 to indicate V.CRYPTO category support

2014-06-11 16:31:20 +10:00