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xen: regression fix for 4.8-rc3 

- Fix a regression in the xenbus device preventing userspace tools
   from working.
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Merge tag 'for-linus-4.8b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen regression fix from David Vrabel:
 "Fix a regression in the xenbus device preventing userspace tools from
  working"

* tag 'for-linus-4.8b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: change the type of xen_vcpu_id to uint32_t
  xenbus: don't look up transaction IDs for ordinary writes
This commit is contained in:
Linus Torvalds 2016-08-24 14:04:30 -04:00
parent cad9d20784 55467dea29
commit fe2dd21282
4 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/xen/enlighten.c
View File

@ -50,7 +50,7 @@ DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
static struct vcpu_info __percpu *xen_vcpu_info;
/* Linux <-> Xen vCPU id mapping */
DEFINE_PER_CPU(int, xen_vcpu_id) = -1;
DEFINE_PER_CPU(uint32_t, xen_vcpu_id);
EXPORT_PER_CPU_SYMBOL(xen_vcpu_id);
/* These are unused until we support booting "pre-ballooned" */

2
arch/x86/xen/enlighten.c
View File

@ -118,7 +118,7 @@ DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
DEFINE_PER_CPU(struct vcpu_info, xen_vcpu_info);
/* Linux <-> Xen vCPU id mapping */
DEFINE_PER_CPU(int, xen_vcpu_id) = -1;
DEFINE_PER_CPU(uint32_t, xen_vcpu_id);
EXPORT_PER_CPU_SYMBOL(xen_vcpu_id);
enum xen_domain_type xen_domain_type = XEN_NATIVE;

2
drivers/xen/xenbus/xenbus_dev_frontend.c
View File

@ -316,7 +316,7 @@ static int xenbus_write_transaction(unsigned msg_type,
rc = -ENOMEM;
goto out;
}
} else {
} else if (msg_type == XS_TRANSACTION_END) {
list_for_each_entry(trans, &u->transactions, list)
if (trans->handle.id == u->u.msg.tx_id)
break;

4
include/xen/xen-ops.h
View File

@ -9,8 +9,8 @@
DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
DECLARE_PER_CPU(int, xen_vcpu_id);
static inline int xen_vcpu_nr(int cpu)
DECLARE_PER_CPU(uint32_t, xen_vcpu_id);
static inline uint32_t xen_vcpu_nr(int cpu)
{
return per_cpu(xen_vcpu_id, cpu);
}