linux-kernel - [PATCH 04/12] xen: use vcpu

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Message-Id: <1285676218-26218-4-git-send-email-stefano.stabellini@eu.citrix.com>
Date:	Tue, 28 Sep 2010 13:16:50 +0100
From:	stefano.stabellini@...citrix.com
To:	linux-kernel@...r.kernel.org
Cc:	xen-devel@...ts.xensource.com,
	Jeremy Fitzhardinge <Jeremy.Fitzhardinge@...rix.com>,
	Stefano Stabellini <Stefano.Stabellini@...citrix.com>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>
Subject: [PATCH 04/12] xen: use vcpu_ops to setup cpu masks

From: Stefano Stabellini <stefano.stabellini@...citrix.com>

Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com>
---
 arch/x86/xen/smp.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 25f232b..1386767 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -156,11 +156,16 @@ static void __init xen_fill_possible_map(void)
 {
 	int i, rc;
 
+	num_processors = 0;
+	disabled_cpus = 0;
 	for (i = 0; i < nr_cpu_ids; i++) {
 		rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL);
 		if (rc >= 0) {
 			num_processors++;
 			set_cpu_possible(i, true);
+		} else {
+			set_cpu_possible(i, false);
+			set_cpu_present(i, false);
 		}
 	}
 }
@@ -190,6 +195,8 @@ static void __init xen_smp_prepare_cpus(unsigned int max_cpus)
 	if (xen_smp_intr_init(0))
 		BUG();
 
+	xen_fill_possible_map();
+
 	if (!alloc_cpumask_var(&xen_cpu_initialized_map, GFP_KERNEL))
 		panic("could not allocate xen_cpu_initialized_map\n");
 
@@ -480,6 +487,5 @@ static const struct smp_ops xen_smp_ops __initdata = {
 void __init xen_smp_init(void)
 {
 	smp_ops = xen_smp_ops;
-	xen_fill_possible_map();
 	xen_init_spinlocks();
 }
-- 
1.5.6.5

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