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| author |   Paul Mundt <lethal@linux-sh.org> | 2010-10-26 14:44:58 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-10-26 14:44:58 +0900 |
| commit | 2f98492c5375e906e48c78d88351f45bb11b6a8a (patch) | |
| tree | 13373dbdc047a2b70623dbf2cd3181865266f976 /arch/sh/kernel/cpu/init.c | |
| parent | Merge branch 'for-next' of git://android.git.kernel.org/kernel/tegra (diff) | |
| download | wireguard-linux-2f98492c5375e906e48c78d88351f45bb11b6a8a.tar.xz wireguard-linux-2f98492c5375e906e48c78d88351f45bb11b6a8a.zip | |
sh: Expose physical addressing mode through cpuinfo.
CPUs can be in either the legacy 29-bit or 32-bit physical addressing
modes. This follows the x86 approach of tracking the phys bits in cpuinfo
and exposing it to userspace through procfs.
This change was requested to permit kexec-tools to detect the physical
addressing mode in order to determine the appropriate address mangling.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/cpu/init.c')
| -rw-r--r-- | arch/sh/kernel/cpu/init.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/sh/kernel/cpu/init.c b/arch/sh/kernel/cpu/init.c index 97661061ff20..fac742e514ee 100644 --- a/arch/sh/kernel/cpu/init.c +++ b/arch/sh/kernel/cpu/init.c @@ -340,6 +340,8 @@ asmlinkage void __cpuinit cpu_init(void) */ current_cpu_data.asid_cache = NO_CONTEXT; + current_cpu_data.phys_bits = __in_29bit_mode() ? 29 : 32; + speculative_execution_init(); expmask_init(); |