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| author | Will Deacon <will.deacon@arm.com> | 2013-05-02 13:52:01 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-02-05 22:35:38 -0800 |
| commit | 716669313b88cce317a83230cde7644451aea9f4 (patch) | |
| tree | ce60f3e6dcf32aa6730f15d980a17aab4035d725 /kernel/sysctl_binary.c | |
| parent | 98d1567891367f794f10b7cf907055abdb4f897b (diff) | |
ARM: lpae: fix definition of PTE_HWTABLE_PTRS
commit e38a517578d6c0f764b0d0f6e26dcdf9f70c69d7 upstream.
For 2-level page tables, PTE_HWTABLE_PTRS describes the offset between
Linux PTEs and hardware PTEs. On LPAE, there is no distinction (since
we have 64-bit descriptors with plenty of space) so PTE_HWTABLE_PTRS
should be 0. Unfortunately, it is wrongly defined as PTRS_PER_PTE,
meaning that current pte table flushing is off by a page. Luckily,
all current LPAE implementations are SMP, so the hardware walker can
snoop L1.
This patch fixes the broken definition.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Hou Pengyang <houpengyang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/sysctl_binary.c')
0 files changed, 0 insertions, 0 deletions