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| author | Li RongQing <lirongqing@baidu.com> | 2024-04-12 11:01:30 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2024-04-12 12:12:11 +0200 |
| commit | 90167e96588df747c9b47a04ebac59b71e3b413f (patch) | |
| tree | 4309ad01f40ef6094aa54c64d8fe302892cf759b /arch | |
| parent | 21f546a43a918ed1cc3bf99ac094107139cf3f33 (diff) | |
| download | linux-stable-90167e96588df747c9b47a04ebac59b71e3b413f.tar.gz linux-stable-90167e96588df747c9b47a04ebac59b71e3b413f.tar.bz2 linux-stable-90167e96588df747c9b47a04ebac59b71e3b413f.zip | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/sev.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/kernel/sev.c b/arch/x86/kernel/sev.c index 38ad066179d8..995f94467101 100644 --- a/arch/x86/kernel/sev.c +++ b/arch/x86/kernel/sev.c @@ -938,7 +938,7 @@ static int snp_set_vmsa(void *va, bool vmsa) #define INIT_LDTR_ATTRIBS (SVM_SELECTOR_P_MASK | 2) #define INIT_TR_ATTRIBS (SVM_SELECTOR_P_MASK | 3) -static void *snp_alloc_vmsa_page(void) +static void *snp_alloc_vmsa_page(int cpu) { struct page *p; @@ -950,7 +950,7 @@ static void *snp_alloc_vmsa_page(void) * * Allocate an 8k page which is also 8k-aligned. */ - p = alloc_pages(GFP_KERNEL_ACCOUNT | __GFP_ZERO, 1); + p = alloc_pages_node(cpu_to_node(cpu), GFP_KERNEL_ACCOUNT | __GFP_ZERO, 1); if (!p) return NULL; @@ -1019,7 +1019,7 @@ static int wakeup_cpu_via_vmgexit(u32 apic_id, unsigned long start_ip) * #VMEXIT of that vCPU would wipe out all of the settings being done * here. */ - vmsa = (struct sev_es_save_area *)snp_alloc_vmsa_page(); + vmsa = (struct sev_es_save_area *)snp_alloc_vmsa_page(cpu); if (!vmsa) return -ENOMEM; @@ -1341,7 +1341,7 @@ static void __init alloc_runtime_data(int cpu) { struct sev_es_runtime_data *data; - data = memblock_alloc(sizeof(*data), PAGE_SIZE); + data = memblock_alloc_node(sizeof(*data), PAGE_SIZE, cpu_to_node(cpu)); if (!data) panic("Can't allocate SEV-ES runtime data"); |