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| author | Michael Neuling <mikey@neuling.org> | 2016-05-02 15:26:19 +1000 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2016-05-10 16:04:51 +1000 |
| commit | 4e62374cd3a124b792e3e1befbeaadc0985e4df3 (patch) | |
| tree | 4ec7272a5dc447c7c1b3ece749d0554435be0eef /include | |
| parent | 6b50ff75b5194972a00ba662767c65d70c90a938 (diff) | |
| download | skiboot-4e62374cd3a124b792e3e1befbeaadc0985e4df3.zip skiboot-4e62374cd3a124b792e3e1befbeaadc0985e4df3.tar.gz skiboot-4e62374cd3a124b792e3e1befbeaadc0985e4df3.tar.bz2 | |
Disable attn instruction on boot
Currently we don't touch the attn enable bit in HID0 on boot.
When attn is enabled, it's available everywhere including HV=0. This
is very dangerous for the host kernel.
This explicitly disables the attn instruction on all CPUs on boot.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/cpu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/cpu.h b/include/cpu.h index 9eaf59c..587cd52 100644 --- a/include/cpu.h +++ b/include/cpu.h @@ -120,6 +120,7 @@ static inline void __nomcount cpu_relax(void) void pre_init_boot_cpu(void); void init_boot_cpu(void); void init_all_cpus(void); +void init_hid(void); /* This brings up our secondaries */ extern void cpu_bringup(void); |