diff options
Diffstat (limited to 'arch/x86/boot')
| -rw-r--r-- | arch/x86/boot/compressed/sev.c | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/arch/x86/boot/compressed/sev.c b/arch/x86/boot/compressed/sev.c index 82079ce7be06..52f989f6acc2 100644 --- a/arch/x86/boot/compressed/sev.c +++ b/arch/x86/boot/compressed/sev.c @@ -382,43 +382,6 @@ found_cc_info: } /* - * Initialize the kernel's copy of the SNP CPUID table, and set up the - * pointer that will be used to access it. - * - * Maintaining a direct mapping of the SNP CPUID table used by firmware would - * be possible as an alternative, but the approach is brittle since the - * mapping needs to be updated in sync with all the changes to virtual memory - * layout and related mapping facilities throughout the boot process. - */ -static void setup_cpuid_table(const struct cc_blob_sev_info *cc_info) -{ - const struct snp_cpuid_table *cpuid_table_fw, *cpuid_table; - int i; - - if (!cc_info || !cc_info->cpuid_phys || cc_info->cpuid_len < PAGE_SIZE) - sev_es_terminate(SEV_TERM_SET_LINUX, GHCB_TERM_CPUID); - - cpuid_table_fw = (const struct snp_cpuid_table *)cc_info->cpuid_phys; - if (!cpuid_table_fw->count || cpuid_table_fw->count > SNP_CPUID_COUNT_MAX) - sev_es_terminate(SEV_TERM_SET_LINUX, GHCB_TERM_CPUID); - - cpuid_table = snp_cpuid_get_table(); - memcpy((void *)cpuid_table, cpuid_table_fw, sizeof(*cpuid_table)); - - /* Initialize CPUID ranges for range-checking. */ - for (i = 0; i < cpuid_table->count; i++) { - const struct snp_cpuid_fn *fn = &cpuid_table->fn[i]; - - if (fn->eax_in == 0x0) - cpuid_std_range_max = fn->eax; - else if (fn->eax_in == 0x40000000) - cpuid_hyp_range_max = fn->eax; - else if (fn->eax_in == 0x80000000) - cpuid_ext_range_max = fn->eax; - } -} - -/* * Indicate SNP based on presence of SNP-specific CC blob. Subsequent checks * will verify the SNP CPUID/MSR bits. */ |