diff options
| author | Li RongQing <lirongqing@baidu.com> | 2024-05-20 20:08:58 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2024-06-03 16:14:11 -0700 |
| commit | 99a49093ce92d6116a1635802f9c16d0db6e805a (patch) | |
| tree | 9efb8da910363a8ec40e7ab9bece1eb6cf023571 /arch/x86/kvm/svm/svm.c | |
| parent | 9f44286d77ac72a15692c56d0fcbf7d2534e1f1e (diff) | |
KVM: SVM: Consider NUMA affinity when allocating per-CPU save_area
save_area of per-CPU svm_data are dominantly accessed from their
own local CPUs, so allocate them node-local for performance reason
so rename __snp_safe_alloc_page as snp_safe_alloc_page_node which
accepts numa node id as input parameter, svm_cpu_init call it with
node id switched from cpu id
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lore.kernel.org/r/20240520120858.13117-4-lirongqing@baidu.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/kvm/svm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index adbd676708f6..da5cddec97a6 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -703,7 +703,7 @@ static int svm_cpu_init(int cpu) int ret = -ENOMEM; memset(sd, 0, sizeof(struct svm_cpu_data)); - sd->save_area = __snp_safe_alloc_page(GFP_KERNEL); + sd->save_area = snp_safe_alloc_page_node(cpu_to_node(cpu), GFP_KERNEL); if (!sd->save_area) return ret; |