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Subject[PATCH linux v2] xen: change the type of xen_vcpu_id to uint32_t
Date
We pass xen_vcpu_id mapping information to hypercalls which require
uint32_t type so it would be cleaner to have it as uint32_t. The
initializer to -1 can be dropped as we always do the mapping before using
it and we never check the 'not set' value anyway.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
Changes since v2:
- Change the return value type of xen_vcpu_nr to uint32_t [David Vrabel]
---
arch/arm/xen/enlighten.c | 2 +-
arch/x86/xen/enlighten.c | 2 +-
include/xen/xen-ops.h | 4 ++--
3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 6d3a171..1752116 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -47,7 +47,7 @@ DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
static struct vcpu_info __percpu *xen_vcpu_info;

/* Linux <-> Xen vCPU id mapping */
-DEFINE_PER_CPU(int, xen_vcpu_id) = -1;
+DEFINE_PER_CPU(uint32_t, xen_vcpu_id);
EXPORT_PER_CPU_SYMBOL(xen_vcpu_id);

/* These are unused until we support booting "pre-ballooned" */
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 54eef1a..78a14a0 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -120,7 +120,7 @@ DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
DEFINE_PER_CPU(struct vcpu_info, xen_vcpu_info);

/* Linux <-> Xen vCPU id mapping */
-DEFINE_PER_CPU(int, xen_vcpu_id) = -1;
+DEFINE_PER_CPU(uint32_t, xen_vcpu_id);
EXPORT_PER_CPU_SYMBOL(xen_vcpu_id);

enum xen_domain_type xen_domain_type = XEN_NATIVE;
diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h
index a4926f1..aac1be8 100644
--- a/include/xen/xen-ops.h
+++ b/include/xen/xen-ops.h
@@ -9,8 +9,8 @@

DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);

-DECLARE_PER_CPU(int, xen_vcpu_id);
-static inline int xen_vcpu_nr(int cpu)
+DECLARE_PER_CPU(uint32_t, xen_vcpu_id);
+static inline uint32_t xen_vcpu_nr(int cpu)
{
return per_cpu(xen_vcpu_id, cpu);
}
--
2.7.4
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