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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-24 20:20:25 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-24 20:20:25 +0100 |
| commit | e22057c8599373e5caef0bc42bdb95d2a361ab0d (patch) | |
| tree | 04e9f51835f4d5c08aada38597c30de1113c03d9 /arch | |
| parent | Fix potential endless loop in kswapd when compaction is not enabled (diff) | |
| parent | xen/acpi: Fix Kconfig dependency on CPU_FREQ (diff) | |
| download | linux-e22057c8599373e5caef0bc42bdb95d2a361ab0d.tar.xz linux-e22057c8599373e5caef0bc42bdb95d2a361ab0d.zip | |
Merge tag 'stable/for-linus-3.4-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull more xen updates from Konrad Rzeszutek Wilk:
"One tiny feature that accidentally got lost in the initial git pull:
* Add fast-EOI acking of interrupts (clear a bit instead of
hypercall)
And bug-fixes:
* Fix CPU bring-up code missing a call to notify other subsystems.
* Fix reading /sys/hypervisor even if PVonHVM drivers are not loaded.
* In Xen ACPI processor driver: remove too verbose WARN messages, fix
up the Kconfig dependency to be a module by default, and add
dependency on CPU_FREQ.
* Disable CPU frequency drivers from loading when booting under Xen
(as we want the Xen ACPI processor to be used instead).
* Cleanups in tmem code."
* tag 'stable/for-linus-3.4-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/acpi: Fix Kconfig dependency on CPU_FREQ
xen: initialize platform-pci even if xen_emul_unplug=never
xen/smp: Fix bringup bug in AP code.
xen/acpi: Remove the WARN's as they just create noise.
xen/tmem: cleanup
xen: support pirq_eoi_map
xen/acpi-processor: Do not depend on CPU frequency scaling drivers.
xen/cpufreq: Disable the cpu frequency scaling drivers from loading.
provide disable_cpufreq() function to disable the API.
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/xen/setup.c | 2 | ||||
| -rw-r--r-- | arch/x86/xen/smp.c | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 12366238d07d..1ba8dff26753 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -10,6 +10,7 @@ #include <linux/pm.h> #include <linux/memblock.h> #include <linux/cpuidle.h> +#include <linux/cpufreq.h> #include <asm/elf.h> #include <asm/vdso.h> @@ -420,6 +421,7 @@ void __init xen_arch_setup(void) boot_cpu_data.hlt_works_ok = 1; #endif disable_cpuidle(); + disable_cpufreq(); WARN_ON(set_pm_idle_to_default()); fiddle_vdso(); } diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 315d8fa0c8fb..02900e8ce26c 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -75,8 +75,14 @@ static void __cpuinit cpu_bringup(void) xen_setup_cpu_clockevents(); + notify_cpu_starting(cpu); + + ipi_call_lock(); set_cpu_online(cpu, true); + ipi_call_unlock(); + this_cpu_write(cpu_state, CPU_ONLINE); + wmb(); /* We can take interrupts now: we're officially "up". */ |