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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-08-22 03:38:33 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-08-22 03:38:33 +0400 |
| commit | d936d2d452ca1848cc4b397bdfb96d4278b9f934 (patch) | |
| tree | 205a6d386d363d94208a3340f911009d74d2aa29 /arch/x86/xen/smp.c | |
| parent | 0903391acbc1b509a60a6cb682344c748a69821a (diff) | |
| parent | fc78d343fa74514f6fd117b5ef4cd27e4ac30236 (diff) | |
| download | linux-d936d2d452ca1848cc4b397bdfb96d4278b9f934.tar.xz | |
Merge tag 'stable/for-linus-3.11-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull Xen bug-fixes from Konrad Rzeszutek Wilk:
- On ARM did not have balanced calls to get/put_cpu.
- Fix to make tboot + Xen + Linux correctly.
- Fix events VCPU binding issues.
- Fix a vCPU online race where IPIs are sent to not-yet-online vCPU.
* tag 'stable/for-linus-3.11-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/smp: initialize IPI vectors before marking CPU online
xen/events: mask events when changing their VCPU binding
xen/events: initialize local per-cpu mask for all possible events
x86/xen: do not identity map UNUSABLE regions in the machine E820
xen/arm: missing put_cpu in xen_percpu_init
Diffstat (limited to 'arch/x86/xen/smp.c')
| -rw-r--r-- | arch/x86/xen/smp.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index ca92754eb846..b81c88e51daa 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -694,8 +694,15 @@ static void __init xen_hvm_smp_prepare_cpus(unsigned int max_cpus) static int xen_hvm_cpu_up(unsigned int cpu, struct task_struct *tidle) { int rc; - rc = native_cpu_up(cpu, tidle); - WARN_ON (xen_smp_intr_init(cpu)); + /* + * xen_smp_intr_init() needs to run before native_cpu_up() + * so that IPI vectors are set up on the booting CPU before + * it is marked online in native_cpu_up(). + */ + rc = xen_smp_intr_init(cpu); + WARN_ON(rc); + if (!rc) + rc = native_cpu_up(cpu, tidle); return rc; } |