The class function and implementations for updating launch data return a code in case of error. In some cases an error message is generated and in other cases, just the error return value is used.
This small refactor adds an 'Error **errp' parameter to all functions which consistently set an error condition if a non-zero value is returned. Signed-off-by: Roy Hopkins <roy.hopk...@suse.com> --- target/i386/sev.c | 59 +++++++++++++++++++++++++---------------------- 1 file changed, 31 insertions(+), 28 deletions(-) diff --git a/target/i386/sev.c b/target/i386/sev.c index 491ca5369e..5eabeadda6 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -121,7 +121,8 @@ struct SevCommonStateClass { Error **errp); int (*launch_start)(SevCommonState *sev_common); void (*launch_finish)(SevCommonState *sev_common); - int (*launch_update_data)(SevCommonState *sev_common, hwaddr gpa, uint8_t *ptr, size_t len); + int (*launch_update_data)(SevCommonState *sev_common, hwaddr gpa, + uint8_t *ptr, size_t len, Error **errp); int (*kvm_init)(ConfidentialGuestSupport *cgs, Error **errp); }; @@ -945,14 +946,16 @@ out: return ret; } -static int -sev_launch_update_data(SevCommonState *sev_common, hwaddr gpa, - uint8_t *addr, size_t len) +static int sev_launch_update_data(SevCommonState *sev_common, hwaddr gpa, + uint8_t *addr, size_t len, Error **errp) { int ret, fw_error; struct kvm_sev_launch_update_data update; if (!addr || !len) { + error_setg(errp, + "%s: Invalid parameters provided for updating launch data.", + __func__); return 1; } @@ -962,8 +965,8 @@ sev_launch_update_data(SevCommonState *sev_common, hwaddr gpa, ret = sev_ioctl(sev_common->sev_fd, KVM_SEV_LAUNCH_UPDATE_DATA, &update, &fw_error); if (ret) { - error_report("%s: LAUNCH_UPDATE ret=%d fw_error=%d '%s'", - __func__, ret, fw_error, fw_error_to_str(fw_error)); + error_setg(errp, "%s: LAUNCH_UPDATE ret=%d fw_error=%d '%s'", __func__, + ret, fw_error, fw_error_to_str(fw_error)); } return ret; @@ -1091,8 +1094,8 @@ sev_launch_finish(SevCommonState *sev_common) migrate_add_blocker(&sev_mig_blocker, &error_fatal); } -static int -snp_launch_update_data(uint64_t gpa, void *hva, size_t len, int type) +static int snp_launch_update_data(uint64_t gpa, void *hva, size_t len, + int type, Error **errp) { SevLaunchUpdateData *data; @@ -1107,13 +1110,11 @@ snp_launch_update_data(uint64_t gpa, void *hva, size_t len, int type) return 0; } -static int -sev_snp_launch_update_data(SevCommonState *sev_common, hwaddr gpa, - uint8_t *ptr, size_t len) +static int sev_snp_launch_update_data(SevCommonState *sev_common, hwaddr gpa, + uint8_t *ptr, size_t len, Error **errp) { - int ret = snp_launch_update_data(gpa, ptr, len, - KVM_SEV_SNP_PAGE_TYPE_NORMAL); - return ret; + return snp_launch_update_data(gpa, ptr, len, + KVM_SEV_SNP_PAGE_TYPE_NORMAL, errp); } static int @@ -1165,8 +1166,8 @@ sev_snp_cpuid_info_fill(SnpCpuidInfo *snp_cpuid_info, return 0; } -static int -snp_launch_update_cpuid(uint32_t cpuid_addr, void *hva, size_t cpuid_len) +static int snp_launch_update_cpuid(uint32_t cpuid_addr, void *hva, + size_t cpuid_len, Error **errp) { KvmCpuidInfo kvm_cpuid_info = {0}; SnpCpuidInfo snp_cpuid_info; @@ -1183,26 +1184,26 @@ snp_launch_update_cpuid(uint32_t cpuid_addr, void *hva, size_t cpuid_len) } while (ret == -E2BIG); if (ret) { - error_report("SEV-SNP: unable to query CPUID values for CPU: '%s'", - strerror(-ret)); + error_setg(errp, "SEV-SNP: unable to query CPUID values for CPU: '%s'", + strerror(-ret)); return 1; } ret = sev_snp_cpuid_info_fill(&snp_cpuid_info, &kvm_cpuid_info); if (ret) { - error_report("SEV-SNP: failed to generate CPUID table information"); + error_setg(errp, "SEV-SNP: failed to generate CPUID table information"); return 1; } memcpy(hva, &snp_cpuid_info, sizeof(snp_cpuid_info)); return snp_launch_update_data(cpuid_addr, hva, cpuid_len, - KVM_SEV_SNP_PAGE_TYPE_CPUID); + KVM_SEV_SNP_PAGE_TYPE_CPUID, errp); } -static int -snp_launch_update_kernel_hashes(SevSnpGuestState *sev_snp, uint32_t addr, - void *hva, uint32_t len) +static int snp_launch_update_kernel_hashes(SevSnpGuestState *sev_snp, + uint32_t addr, void *hva, + uint32_t len, Error **errp) { int type = KVM_SEV_SNP_PAGE_TYPE_ZERO; if (sev_snp->parent_obj.kernel_hashes) { @@ -1214,7 +1215,7 @@ snp_launch_update_kernel_hashes(SevSnpGuestState *sev_snp, uint32_t addr, sizeof(*sev_snp->kernel_hashes_data)); type = KVM_SEV_SNP_PAGE_TYPE_NORMAL; } - return snp_launch_update_data(addr, hva, len, type); + return snp_launch_update_data(addr, hva, len, type, errp); } static int @@ -1252,12 +1253,14 @@ snp_populate_metadata_pages(SevSnpGuestState *sev_snp, } if (type == KVM_SEV_SNP_PAGE_TYPE_CPUID) { - ret = snp_launch_update_cpuid(desc->base, hva, desc->len); + ret = snp_launch_update_cpuid(desc->base, hva, desc->len, + &error_fatal); } else if (desc->type == SEV_DESC_TYPE_SNP_KERNEL_HASHES) { ret = snp_launch_update_kernel_hashes(sev_snp, desc->base, hva, - desc->len); + desc->len, &error_fatal); } else { - ret = snp_launch_update_data(desc->base, hva, desc->len, type); + ret = snp_launch_update_data(desc->base, hva, desc->len, type, + &error_fatal); } if (ret) { @@ -1542,7 +1545,7 @@ sev_encrypt_flash(hwaddr gpa, uint8_t *ptr, uint64_t len, Error **errp) /* if SEV is in update state then encrypt the data else do nothing */ if (sev_check_state(sev_common, SEV_STATE_LAUNCH_UPDATE)) { - if (klass->launch_update_data(sev_common, gpa, ptr, len)) { + if (klass->launch_update_data(sev_common, gpa, ptr, len, errp)) { error_setg(errp, "SEV: Failed to encrypt flash"); return -1; } -- 2.43.0