Fixes the warning:
arch/x86/kvm/vmx.c:64:32: warning: variable 'vmx_cpu_id' is not needed
and will not be emitted [-Wunneeded-internal-declaration]``
Other callers of MODULE_DEVICE_TABLE() seem to check their second
argument during driver init with the x86_match_cpu() function, if their
first argument to MODULE_DEVICE_TABLE() is x86cpu. The documentation
for x86_match_cpu() seems to agree.
Suggested-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Signed-off-by: Nick Desaulniers <nick.desaulniers@xxxxxxxxx>
---
arch/x86/kernel/cpu/match.c | 2 +-
arch/x86/kvm/vmx.c | 7 ++++++-
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/match.c b/arch/x86/kernel/cpu/match.c
index e42117d5f4d7..fb1aeafa5cc7 100644
--- a/arch/x86/kernel/cpu/match.c
+++ b/arch/x86/kernel/cpu/match.c
@@ -5,7 +5,7 @@
#include <linux/slab.h>
/**
- * x86_match_cpu - match current CPU again an array of x86_cpu_ids
+ * x86_match_cpu - match current CPU against an array of x86_cpu_ids
* @match: Pointer to array of x86_cpu_ids. Last entry terminated with
* {}.
*
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 6970249c09fc..e1a00b130935 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -12074,7 +12074,12 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
static int __init vmx_init(void)
{
- int r = kvm_init(&vmx_x86_ops, sizeof(struct vcpu_vmx),
+ int r;
+
+ if (!x86_match_cpu(vmx_cpu_id))
+ return -ENODEV;
+
+ r = kvm_init(&vmx_x86_ops, sizeof(struct vcpu_vmx),
__alignof__(struct vcpu_vmx), THIS_MODULE);
if (r)
return r;
--
2.11.0
