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x86/sev: Take NUMA node into account when allocating memory for per-CPU SEV data
per-CPU SEV data is dominantly accessed from their own local CPUs, so allocate them node-local to improve performance. Signed-off-by: Li RongQing <lirongqing@baidu.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Nikunj A Dadhania <nikunj@amd.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Link: https://lore.kernel.org/r/20240412030130.49704-1-lirongqing@baidu.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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21f546a43a
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1 changed files with 4 additions and 4 deletions
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@ -938,7 +938,7 @@ static int snp_set_vmsa(void *va, bool vmsa)
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#define INIT_LDTR_ATTRIBS (SVM_SELECTOR_P_MASK | 2)
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#define INIT_TR_ATTRIBS (SVM_SELECTOR_P_MASK | 3)
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static void *snp_alloc_vmsa_page(void)
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static void *snp_alloc_vmsa_page(int cpu)
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{
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struct page *p;
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@ -950,7 +950,7 @@ static void *snp_alloc_vmsa_page(void)
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*
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* Allocate an 8k page which is also 8k-aligned.
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*/
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p = alloc_pages(GFP_KERNEL_ACCOUNT | __GFP_ZERO, 1);
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p = alloc_pages_node(cpu_to_node(cpu), GFP_KERNEL_ACCOUNT | __GFP_ZERO, 1);
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if (!p)
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return NULL;
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@ -1019,7 +1019,7 @@ static int wakeup_cpu_via_vmgexit(u32 apic_id, unsigned long start_ip)
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* #VMEXIT of that vCPU would wipe out all of the settings being done
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* here.
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*/
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vmsa = (struct sev_es_save_area *)snp_alloc_vmsa_page();
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vmsa = (struct sev_es_save_area *)snp_alloc_vmsa_page(cpu);
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if (!vmsa)
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return -ENOMEM;
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@ -1341,7 +1341,7 @@ static void __init alloc_runtime_data(int cpu)
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{
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struct sev_es_runtime_data *data;
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data = memblock_alloc(sizeof(*data), PAGE_SIZE);
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data = memblock_alloc_node(sizeof(*data), PAGE_SIZE, cpu_to_node(cpu));
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if (!data)
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panic("Can't allocate SEV-ES runtime data");
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