lkml.org 
[lkml]   [2014]   [Dec]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subjectarm64 hitting BUG in arch_timer.h
From
Date
Using Linus' tree from this morning, I am hitting:

[ 0.000000] BUG: failure at ./arch/arm64/include/asm/arch_timer.h:112/arch_counter_get_cntpct!

This is triggered by commit 0b46b8a718 ("clocksource: arch_timer: Fix
code to use physical timers when requested") which addresses an armv7
problem. Arm64 wants to always use a virtual timer. I used this to avoid
the BUG and get a booting kernel:

diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch
index 71846f9..4d8a01e 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -468,7 +468,7 @@ static void __init arch_counter_register(unsigned type)

/* Register the CP15 based counter if we have one */
if (type & ARCH_CP15_TIMER) {
- if (arch_timer_use_virtual)
+ if (IS_ENABLED(CONFIG_ARM64) || arch_timer_use_virtual)
arch_timer_read_counter = arch_counter_get_cntvct;
else
arch_timer_read_counter = arch_counter_get_cntpct;



\
 
 \ /
  Last update: 2014-12-10 22:21    [W:0.210 / U:0.560 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site