linux

iv/linux

History

Michael Ellerman de9ddf8140 selftests/powerpc: Skip the subpage_prot tests if the syscall is unavailable

[ Upstream commit cd4a6f3ab4d80cb919d15897eb3cbc85c2009d4b ]

The subpage_prot syscall is only functional when the system is using
the Hash MMU. Since commit 5b2b80714796 ("powerpc/mm: Invalidate
subpage_prot() system call on radix platforms") it returns ENOENT when
the Radix MMU is active. Currently this just makes the test fail.

Additionally the syscall is not available if the kernel is built with
4K pages, or if CONFIG_PPC_SUBPAGE_PROT=n, in which case it returns
ENOSYS because the syscall is missing entirely.

So check explicitly for ENOENT and ENOSYS and skip if we see either of
those.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-05-30 07:49:03 +02:00

arch

tools include: Add basic atomic.h implementation from the kernel sources

2015-05-08 16:11:05 -03:00

build

tools build: Add tools tree support for 'make -s'

2018-02-25 11:03:43 +01:00

cgroup

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firewire

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hv: kvp: Avoid reading past allocated blocks from KVP file