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| author | Paul Mundt <lethal@linux-sh.org> | 2010-10-26 07:44:58 +0200 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-10-26 07:44:58 +0200 |
| commit | 2f98492c5375e906e48c78d88351f45bb11b6a8a (patch) | |
| tree | 13373dbdc047a2b70623dbf2cd3181865266f976 /arch/sh/kernel/setup.c | |
| parent | Merge branch 'for-next' of git://android.git.kernel.org/kernel/tegra (diff) | |
| download | linux-2f98492c5375e906e48c78d88351f45bb11b6a8a.tar.xz 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/setup.c')
| -rw-r--r-- | arch/sh/kernel/setup.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c index 4e278467f76c..82c0a0c1df0d 100644 --- a/arch/sh/kernel/setup.c +++ b/arch/sh/kernel/setup.c @@ -52,6 +52,7 @@ struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = { .type = CPU_SH_NONE, .family = CPU_FAMILY_UNKNOWN, .loops_per_jiffy = 10000000, + .phys_bits = MAX_PHYSMEM_BITS, }, }; EXPORT_SYMBOL(cpu_data); @@ -432,6 +433,8 @@ static int show_cpuinfo(struct seq_file *m, void *v) if (c->flags & CPU_HAS_L2_CACHE) show_cacheinfo(m, "scache", c->scache); + seq_printf(m, "address sizes\t: %u bits physical\n", c->phys_bits); + seq_printf(m, "bogomips\t: %lu.%02lu\n", c->loops_per_jiffy/(500000/HZ), (c->loops_per_jiffy/(5000/HZ)) % 100); |