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openSUSE:Leap:15.0
qemu
0069-sev-i386-add-support-to-query-PLATF.patch
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File 0069-sev-i386-add-support-to-query-PLATF.patch of Package qemu
From fea1c51414bedfc61e5ee31b15e58d638acee4fe Mon Sep 17 00:00:00 2001 From: Brijesh Singh <brijesh.singh@amd.com> Date: Thu, 15 Feb 2018 09:03:24 -0600 Subject: [PATCH] sev/i386: add support to query PLATFORM_STATUS command The command is used to query the SEV API version and build id. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> [BR: FATE#322124] Signed-off-by: Bruce Rogers <brogers@suse.com> --- target/i386/sev.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/target/i386/sev.c b/target/i386/sev.c index 1fbc3beb16..e3236f5bb7 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -21,6 +21,9 @@ #include "trace.h" #include "qapi-event.h" +#include <sys/ioctl.h> +#include <linux/psp-sev.h> + #define DEFAULT_GUEST_POLICY 0x1 /* disable debug */ #define DEFAULT_SEV_DEVICE "/dev/sev" #define GUEST_POLICY_DBG_BIT 0x1 @@ -84,6 +87,22 @@ sev_ioctl(int cmd, void *data, int *error) return r; } +static int +sev_platform_ioctl(int cmd, void *data, int *error) +{ + int r; + struct sev_issue_cmd arg; + + arg.cmd = cmd; + arg.data = (unsigned long)data; + r = ioctl(sev_fd, SEV_ISSUE_CMD, &arg); + if (error) { + *error = arg.error; + } + + return r; +} + static const char * fw_error_to_str(int code) { @@ -399,6 +418,20 @@ sev_enabled(void) void sev_get_fw_version(uint8_t *major, uint8_t *minor, uint8_t *build) { + struct sev_user_data_status status = {}; + int r, err; + + r = sev_platform_ioctl(SEV_PLATFORM_STATUS, &status, &err); + if (r) { + error_report("%s: failed to get platform status ret=%d" + "fw_error='%d: %s'", __func__, r, err, + fw_error_to_str(err)); + return; + } + + *major = status.api_major; + *minor = status.api_minor; + *build = status.build; } void
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