diff options
Diffstat (limited to 'arch/x86/kernel/sev.c')
-rw-r--r-- | arch/x86/kernel/sev.c | 45 |
1 files changed, 16 insertions, 29 deletions
diff --git a/arch/x86/kernel/sev.c b/arch/x86/kernel/sev.c index b59b09c2f284..995f94467101 100644 --- a/arch/x86/kernel/sev.c +++ b/arch/x86/kernel/sev.c @@ -23,6 +23,7 @@ #include <linux/platform_device.h> #include <linux/io.h> #include <linux/psp-sev.h> +#include <linux/dmi.h> #include <uapi/linux/sev-guest.h> #include <asm/init.h> @@ -795,21 +796,6 @@ void __init early_snp_set_memory_shared(unsigned long vaddr, unsigned long paddr early_set_pages_state(vaddr, paddr, npages, SNP_PAGE_STATE_SHARED); } -void __init snp_prep_memory(unsigned long paddr, unsigned int sz, enum psc_op op) -{ - unsigned long vaddr, npages; - - vaddr = (unsigned long)__va(paddr); - npages = PAGE_ALIGN(sz) >> PAGE_SHIFT; - - if (op == SNP_PAGE_STATE_PRIVATE) - early_snp_set_memory_private(vaddr, paddr, npages); - else if (op == SNP_PAGE_STATE_SHARED) - early_snp_set_memory_shared(vaddr, paddr, npages); - else - WARN(1, "invalid memory op %d\n", op); -} - static unsigned long __set_pages_state(struct snp_psc_desc *data, unsigned long vaddr, unsigned long vaddr_end, int op) { @@ -952,7 +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; @@ -964,7 +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; @@ -1033,7 +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; @@ -1355,7 +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"); @@ -2136,6 +2122,17 @@ void __head __noreturn snp_abort(void) sev_es_terminate(SEV_TERM_SET_GEN, GHCB_SNP_UNSUPPORTED); } +/* + * SEV-SNP guests should only execute dmi_setup() if EFI_CONFIG_TABLES are + * enabled, as the alternative (fallback) logic for DMI probing in the legacy + * ROM region can cause a crash since this region is not pre-validated. + */ +void __init snp_dmi_setup(void) +{ + if (efi_enabled(EFI_CONFIG_TABLES)) + dmi_setup(); +} + static void dump_cpuid_table(void) { const struct snp_cpuid_table *cpuid_table = snp_cpuid_get_table(); @@ -2287,16 +2284,6 @@ static int __init snp_init_platform_device(void) } device_initcall(snp_init_platform_device); -void kdump_sev_callback(void) -{ - /* - * Do wbinvd() on remote CPUs when SNP is enabled in order to - * safely do SNP_SHUTDOWN on the local CPU. - */ - if (cpu_feature_enabled(X86_FEATURE_SEV_SNP)) - wbinvd(); -} - void sev_show_status(void) { int i; |