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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-25 22:59:39 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-25 22:59:39 -0700 |
| commit | 184475029a724b6b900d88fc3a5f462a6107d5af (patch) | |
| tree | 408320b46df221a2424bf94282b1b8e5b7aff7a1 /arch/powerpc/kernel/idle_e500.S | |
| parent | 3b76eefe0f970c2e19f165d4a1650abc523d10bc (diff) | |
| parent | f1f4ee01c0d3dce0e3aa7d04e4332677db7af478 (diff) | |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (99 commits)
drivers/virt: add missing linux/interrupt.h to fsl_hypervisor.c
powerpc/85xx: fix mpic configuration in CAMP mode
powerpc: Copy back TIF flags on return from softirq stack
powerpc/64: Make server perfmon only built on ppc64 server devices
powerpc/pseries: Fix hvc_vio.c build due to recent changes
powerpc: Exporting boot_cpuid_phys
powerpc: Add CFAR to oops output
hvc_console: Add kdb support
powerpc/pseries: Fix hvterm_raw_get_chars to accept < 16 chars, fixing xmon
powerpc/irq: Quieten irq mapping printks
powerpc: Enable lockup and hung task detectors in pseries and ppc64 defeconfigs
powerpc: Add mpt2sas driver to pseries and ppc64 defconfig
powerpc: Disable IRQs off tracer in ppc64 defconfig
powerpc: Sync pseries and ppc64 defconfigs
powerpc/pseries/hvconsole: Fix dropped console output
hvc_console: Improve tty/console put_chars handling
powerpc/kdump: Fix timeout in crash_kexec_wait_realmode
powerpc/mm: Fix output of total_ram.
powerpc/cpufreq: Add cpufreq driver for Momentum Maple boards
powerpc: Correct annotations of pmu registration functions
...
Fix up trivial Kconfig/Makefile conflicts in arch/powerpc, drivers, and
drivers/cpufreq
Diffstat (limited to 'arch/powerpc/kernel/idle_e500.S')
| -rw-r--r-- | arch/powerpc/kernel/idle_e500.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/idle_e500.S b/arch/powerpc/kernel/idle_e500.S index 47a1a983ff8..3e2b95c6ae6 100644 --- a/arch/powerpc/kernel/idle_e500.S +++ b/arch/powerpc/kernel/idle_e500.S @@ -26,6 +26,17 @@ _GLOBAL(e500_idle) ori r4,r4,_TLF_NAPPING /* so when we take an exception */ stw r4,TI_LOCAL_FLAGS(r3) /* it will return to our caller */ +#ifdef CONFIG_E500MC + wrteei 1 +1: wait + + /* + * Guard against spurious wakeups (e.g. from a hypervisor) -- + * any real interrupt will cause us to return to LR due to + * _TLF_NAPPING. + */ + b 1b +#else /* Check if we can nap or doze, put HID0 mask in r3 */ lis r3,0 BEGIN_FTR_SECTION @@ -72,6 +83,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_L2CSR|CPU_FTR_CAN_NAP) mtmsr r7 isync 2: b 2b +#endif /* !E500MC */ /* * Return from NAP/DOZE mode, restore some CPU specific registers, |