[PATCH RESEND v2 2/2] xen: enable vnuma for PV guest

From: Elena Ufimtseva <ufimtseva@gmail.com>
To: xen-devel@lists.xenproject.org
Cc: akpm@linux-foundation.org, wency@cn.fujitsu.com, x86@kernel.org,
	linux-kernel@vger.kernel.org, tangchen@cn.fujitsu.com,
	mingo@redhat.com, david.vrabel@citrix.com,
	Elena Ufimtseva <ufimtseva@gmail.com>,
	hpa@zytor.com, boris.ostrovsky@oracle.com, tglx@linutronix.de,
	stefano.stabellini@eu.citrix.com, ian.campbell@citrix.com
Subject: [PATCH RESEND v2 2/2] xen: enable vnuma for PV guest
Date: Mon, 18 Nov 2013 16:58:42 -0500	[thread overview]
Message-ID: <1384811922-14642-3-git-send-email-ufimtseva__38305.6149505593$1384812378$gmane$org@gmail.com> (raw)
In-Reply-To: <1384811922-14642-1-git-send-email-ufimtseva@gmail.com>

Enables numa if vnuma topology hypercall is supported and it is domU.

Signed-off-by: Elena Ufimtseva <ufimtseva@gmail.com>
---
 arch/x86/xen/setup.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index 68c054f..0aab799 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -20,6 +20,7 @@
 #include <asm/numa.h>
 #include <asm/xen/hypervisor.h>
 #include <asm/xen/hypercall.h>
+#include <asm/xen/vnuma.h>
 
 #include <xen/xen.h>
 #include <xen/page.h>
@@ -598,6 +599,9 @@ void __init xen_arch_setup(void)
 	WARN_ON(xen_set_default_idle());
 	fiddle_vdso();
 #ifdef CONFIG_NUMA
-	numa_off = 1;
+	if (!xen_initial_domain() && xen_vnuma_supported())
+		numa_off = 0;
+	else
+		numa_off = 1;
 #endif
 }
-- 
1.7.10.4
