From: Christoph Egger <Christoph.Egger@amd.com>
To: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
Tim Deegan <Tim.Deegan@citrix.com>
Subject: [PATCH] p2m: no need to send IPIs within p2m_alloc_table()
Date: Mon, 22 Aug 2011 13:54:16 +0200 [thread overview]
Message-ID: <4E524368.4010809@amd.com> (raw)
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There is no need to send IPIs within p2m_alloc_table() via
set_p2m_entry().
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
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[-- Attachment #2: xen_nh_ipi.diff --]
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diff -r 3f660d0e12f7 xen/arch/x86/mm/p2m.c
--- a/xen/arch/x86/mm/p2m.c Fri Aug 19 15:26:03 2011 +0200
+++ b/xen/arch/x86/mm/p2m.c Mon Aug 22 13:52:51 2011 +0200
@@ -247,6 +247,7 @@ int p2m_alloc_table(struct p2m_domain *p
P2M_PRINTK("populating p2m table\n");
/* Initialise physmap tables for slot zero. Other code assumes this. */
+ p2m->defer_nested_flush = 1;
if ( !set_p2m_entry(p2m, 0, _mfn(INVALID_MFN), 0,
p2m_invalid, p2m->default_access) )
{
@@ -277,6 +278,7 @@ int p2m_alloc_table(struct p2m_domain *p
}
spin_unlock(&p2m->domain->page_alloc_lock);
}
+ p2m->defer_nested_flush = 0;
P2M_PRINTK("p2m table initialised (%u pages)\n", page_count);
p2m_unlock(p2m);
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next reply other threads:[~2011-08-22 11:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-22 11:54 Christoph Egger [this message]
2011-08-22 13:43 ` [PATCH] p2m: no need to send IPIs within p2m_alloc_table() Tim Deegan
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