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Revert the PVonHVM kexec. The patch introduces a regression

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with older hypervisor stacks, such as Xen 4.1.
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Merge tag 'stable/for-linus-3.8-rc7-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull xen fixes from Konrad Rzeszutek Wilk:
 "Two fixes:

   - A simple bug-fix for redundant NULL check.

   - CVE-2013-0228/XSA-42: x86/xen: don't assume %ds is usable in
     xen_iret for 32-bit PVOPS

  and two reverts:

   - Revert the PVonHVM kexec.  The patch introduces a regression with
     older hypervisor stacks, such as Xen 4.1."

* tag 'stable/for-linus-3.8-rc7-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  Revert "xen PVonHVM: use E820_Reserved area for shared_info"
  Revert "xen/PVonHVM: fix compile warning in init_hvm_pv_info"
  xen: remove redundant NULL check before unregister_and_remove_pcpu().
  x86/xen: don't assume %ds is usable in xen_iret for 32-bit PVOPS.
This commit is contained in:
Linus Torvalds 2013-02-15 12:12:55 -08:00
commit f741656d64
5 changed files with 33 additions and 65 deletions
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3
drivers/xen/pcpu.c
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@ -278,8 +278,7 @@ static int sync_pcpu(uint32_t cpu, uint32_t *max_cpu)
* Only those at cpu present map has its sys interface.
*/
if (info->flags & XEN_PCPU_FLAGS_INVALID) {
if (pcpu)
unregister_and_remove_pcpu(pcpu);
unregister_and_remove_pcpu(pcpu);
return 0;
}