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sev: add sev-inject-launch-secret

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AMD SEV allows a guest owner to inject a secret blob
into the memory of a virtual machine. The secret is
encrypted with the SEV Transport Encryption Key and
integrity is guaranteed with the Transport Integrity
Key. Although QEMU facilitates the injection of the
launch secret, it cannot access the secret.

Signed-off-by: Tobin Feldman-Fitzthum <tobin@linux.ibm.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Message-Id: <20201027170303.47550-1-tobin@linux.ibm.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Tobin Feldman-Fitzthum 2020-10-27 13:03:03 -04:00 • committed by Eduardo Habkost
parent 1bf8b88f14
commit c7f7e6970d
8 changed files with 114 additions and 4 deletions
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17
monitor/misc.c
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@ -667,10 +667,11 @@ static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict)
memory_dump(mon, count, format, size, addr, 1);
}
static void *gpa2hva(MemoryRegion **p_mr, hwaddr addr, Error **errp)
void *gpa2hva(MemoryRegion **p_mr, hwaddr addr, uint64_t size, Error **errp)
{
Int128 gpa_region_size;
MemoryRegionSection mrs = memory_region_find(get_system_memory(),
addr, 1);
addr, size);
if (!mrs.mr) {
error_setg(errp, "No memory is mapped at address 0x%" HWADDR_PRIx, addr);
@ -683,6 +684,14 @@ static void *gpa2hva(MemoryRegion **p_mr, hwaddr addr, Error **errp)
return NULL;
}
gpa_region_size = int128_make64(size);
if (int128_lt(mrs.size, gpa_region_size)) {
error_setg(errp, "Size of memory region at 0x%" HWADDR_PRIx
" exceeded.", addr);
memory_region_unref(mrs.mr);
return NULL;
}
*p_mr = mrs.mr;
return qemu_map_ram_ptr(mrs.mr->ram_block, mrs.offset_within_region);
}
@ -694,7 +703,7 @@ static void hmp_gpa2hva(Monitor *mon, const QDict *qdict)
MemoryRegion *mr = NULL;
void *ptr;
ptr = gpa2hva(&mr, addr, &local_err);
ptr = gpa2hva(&mr, addr, 1, &local_err);
if (local_err) {
error_report_err(local_err);
return;
@ -770,7 +779,7 @@ static void hmp_gpa2hpa(Monitor *mon, const QDict *qdict)
void *ptr;
uint64_t physaddr;
ptr = gpa2hva(&mr, addr, &local_err);
ptr = gpa2hva(&mr, addr, 1, &local_err);
if (local_err) {
error_report_err(local_err);
return;