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| author | John A. Williams <john.williams@petalogix.com> | 2011-05-24 12:57:11 +0400 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2011-07-25 11:13:42 +0400 |
| commit | 8904976e8ca45be3ec75acc71f5d855ef671a079 (patch) | |
| tree | 9c76c35266329312ace36ab009d686d5e2cd77f8 /arch/microblaze/kernel/cpu/mb.c | |
| parent | 5db34eb92f5699361de355dcd7958fdd2a9fb98a (diff) | |
| download | linux-8904976e8ca45be3ec75acc71f5d855ef671a079.tar.xz | |
microblaze: Unprivileged stream instruction awareness
Add cpuinfo support for the new MicroBlaze option permitting userspace
(unprivileged) access to the streaming instructions (FSL / AXI-stream).
Emit a noisy warning at bootup if this is enabled, because bad user code
can potentially lockup the CPU.
Signed-off-by: John A. Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze/kernel/cpu/mb.c')
| -rw-r--r-- | arch/microblaze/kernel/cpu/mb.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c index b4048af02615..0afebaebb5b5 100644 --- a/arch/microblaze/kernel/cpu/mb.c +++ b/arch/microblaze/kernel/cpu/mb.c @@ -97,6 +97,10 @@ static int show_cpuinfo(struct seq_file *m, void *v) (cpuinfo.use_exc & PVR2_FPU_EXC_MASK) ? "fpu " : "", (cpuinfo.use_exc & PVR2_USE_FSL_EXC) ? "fsl " : ""); + count += seq_printf(m, + "Stream-insns:\t%sprivileged\n", + cpuinfo.mmu_privins ? "un" : ""); + if (cpuinfo.use_icache) count += seq_printf(m, "Icache:\t\t%ukB\tline length:\t%dB\n", |