Re: 4.0-testing c/s 21405 incomplete?

[George Dunlap <george.dunlap@citrix.com>]

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On Mon, 2011-02-07 at 07:45 +0000, Jan Beulich wrote:
> > The xen-unstable and xen-4.0-testing patches are merely plucked by me from
> > postings by George from the following xen-devel thread:
> > 
> > http://lists.xensource.com/archives/html/xen-devel/2010-12/msg00830.html 
> 
> Ah, okay - I think the patch there wasn't against 4.0-testing, but
> against plain 4.0.x, so it's missing the revert of 4.0-testing c/s
> 21334.

Right -- I'm not exactly sure why that bit was left off my 4.0 patch,
but it certainly shouldn't have been.

Keir, can you please apply the attached patch to 4.0-testing.

 -George


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diff -r f7f6fa8665e7 xen/arch/x86/mm/hap/p2m-ept.c
--- a/xen/arch/x86/mm/hap/p2m-ept.c	Thu Feb 03 11:56:05 2011 +0000
+++ b/xen/arch/x86/mm/hap/p2m-ept.c	Mon Feb 07 14:34:20 2011 +0000
@@ -395,10 +395,6 @@
     int i;
     int ret = 0;
     mfn_t mfn = _mfn(INVALID_MFN);
-    int do_locking = !p2m_locked_by_me(d->arch.p2m);
-
-    if ( do_locking )
-        p2m_lock(d->arch.p2m);
 
     *t = p2m_mmio_dm;
 
@@ -476,8 +472,6 @@
     }
 
 out:
-    if ( do_locking )
-        p2m_unlock(d->arch.p2m);
     unmap_domain_page(table);
     return mfn;
 }

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