[kvm-unit-tests PATCH v4 1/5] s390x: uv-host: Add invalid command attestation check

Steffen Eiden
2022-04-21T09:45:47Z

Adds an invalid command test for attestation in the uv-host.

Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
---
lib/s390x/asm/uv.h | 23 ++++++++++++++++++++++-
s390x/uv-host.c | 1 +
2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/lib/s390x/asm/uv.h b/lib/s390x/asm/uv.h
index 70bf65c4..7c8c399d 100644
--- a/lib/s390x/asm/uv.h
+++ b/lib/s390x/asm/uv.h
@@ -1,7 +1,7 @@
/*
* s390x Ultravisor related definitions
*
- * Copyright (c) 2020 IBM Corp
+ * Copyright IBM Corp. 2020, 2022
*
* Authors:
* Janosch Frank <frankja@linux.ibm.com>
@@ -47,6 +47,7 @@
#define UVC_CMD_UNPIN_PAGE_SHARED 0x0342
#define UVC_CMD_SET_SHARED_ACCESS 0x1000
#define UVC_CMD_REMOVE_SHARED_ACCESS 0x1001
+#define UVC_CMD_ATTESTATION 0x1020

/* Bits in installed uv calls */
enum uv_cmds_inst {
@@ -71,6 +72,7 @@ enum uv_cmds_inst {
BIT_UVC_CMD_UNSHARE_ALL = 20,
BIT_UVC_CMD_PIN_PAGE_SHARED = 21,
BIT_UVC_CMD_UNPIN_PAGE_SHARED = 22,
+ BIT_UVC_CMD_ATTESTATION = 28,
};

struct uv_cb_header {
@@ -178,6 +180,25 @@ struct uv_cb_cfs {
u64 paddr;
} __attribute__((packed)) __attribute__((aligned(8)));

+/* Retrieve Attestation Measurement */
+struct uv_cb_attest {
+ struct uv_cb_header header; /* 0x0000 */
+ uint64_t reserved08[2]; /* 0x0008 */
+ uint64_t arcb_addr; /* 0x0018 */
+ uint64_t continuation_token; /* 0x0020 */
+ uint8_t reserved28[6]; /* 0x0028 */
+ uint16_t user_data_length; /* 0x002e */
+ uint8_t user_data[256]; /* 0x0030 */
+ uint32_t reserved130[3]; /* 0x0130 */
+ uint32_t measurement_length; /* 0x013c */
+ uint64_t measurement_address; /* 0x0140 */
+ uint8_t config_uid[16]; /* 0x0148 */
+ uint32_t reserved158; /* 0x0158 */
+ uint32_t add_data_length; /* 0x015c */
+ uint64_t add_data_address; /* 0x0160 */
+ uint64_t reserved168[4]; /* 0x0168 */
+} __attribute__((packed)) __attribute__((aligned(8)));
+
/* Set Secure Config Parameter */
struct uv_cb_ssc {
struct uv_cb_header header;
diff --git a/s390x/uv-host.c b/s390x/uv-host.c
index d3018e3c..726bcfa5 100644
--- a/s390x/uv-host.c
+++ b/s390x/uv-host.c
@@ -418,6 +418,7 @@ static struct cmd_list invalid_cmds[] = {
{ "bogus", 0x4242, sizeof(struct uv_cb_header), -1},
{ "share", UVC_CMD_SET_SHARED_ACCESS, sizeof(struct uv_cb_share), BIT_UVC_CMD_SET_SHARED_ACCESS },
{ "unshare", UVC_CMD_REMOVE_SHARED_ACCESS, sizeof(struct uv_cb_share), BIT_UVC_CMD_REMOVE_SHARED_ACCESS },
+ { "attest", UVC_CMD_ATTESTATION, sizeof(struct uv_cb_attest), BIT_UVC_CMD_ATTESTATION },
{ NULL, 0, 0 },
};

--
2.30.2