UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

powerpc/power8: Fix secondary CPUs hanging on boot for HV=0 

In __restore_cpu_power8 we determine if we are HV and if not, we return
before setting HV only resources.

Unfortunately we forgot to restore the link register from r11 before
returning.

This will happen on boot and with secondary CPUs not coming online.

This adds the missing link register restore.

Signed-off-by: Michael Neuling <mikey@neuling.org>
CC: <stable@vger.kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Neuling 2013-04-24 21:00:37 +00:00 committed by Benjamin Herrenschmidt
parent 29ce3c5073
commit 8c2a381734
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/powerpc/kernel/cpu_setup_power.S
View File

@ -67,6 +67,7 @@ _GLOBAL(__restore_cpu_power8)
bl __init_FSCR
mfmsr r3
rldicl. r0,r3,4,63
mtlr r11
beqlr
li r0,0
mtspr SPRN_LPID,r0