diff mbox series

[v2,6/6] s390/uv: Update query for secret-UVCs

Message ID 20230519093708.810957-7-seiden@linux.ibm.com (mailing list archive)
State New, archived
Headers show
Series s390/uvdevice: Expose secret UVCs | expand

Commit Message

Steffen Eiden May 19, 2023, 9:37 a.m. UTC 
Update the query struct such that secret-UVC related
information can be parsed.
Add sysfs files for these new values.

Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
---
 arch/s390/boot/uv.c        |  4 ++++
 arch/s390/include/asm/uv.h | 13 +++++++++++--
 arch/s390/kernel/uv.c      | 40 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 55 insertions(+), 2 deletions(-)

Comments

Janosch Frank June 5, 2023, 2:03 p.m. UTC | #1 
On 5/19/23 11:37, Steffen Eiden wrote:
> Update the query struct such that secret-UVC related
> information can be parsed.
> Add sysfs files for these new values.
> 
> Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>

You should add a bit of information about the fields.
Not a large amount but having no info doesn't help anyone without access 
to our design documents.

> ---

[...]

>   extern struct uv_info uv_info;
> diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c
> index d5b5d7e83c17..c0a1bfb01135 100644
> --- a/arch/s390/kernel/uv.c
> +++ b/arch/s390/kernel/uv.c
> @@ -571,6 +571,42 @@ static ssize_t uv_query_supp_att_pflags(struct kobject *kobj,
>   static struct kobj_attribute uv_query_supp_att_pflags_attr =
>   	__ATTR(supp_att_pflags, 0444, uv_query_supp_att_pflags, NULL);
>   
> +static ssize_t uv_query_supp_add_secret_req_ver(struct kobject *kobj,
> +						struct kobj_attribute *attr, char *page)

s/page/buf/ for the whole lot.

> +{
> +	return sysfs_emit(page, "%lx\n", uv_info.supp_add_secret_req_ver);
> +}
> +
> +static struct kobj_attribute uv_query_supp_add_secret_req_ver_attr =
> +	__ATTR(supp_add_secret_req_ver, 0444, uv_query_supp_add_secret_req_ver, NULL);
> +
> +static ssize_t uv_query_supp_add_secret_pcf(struct kobject *kobj,
> +					    struct kobj_attribute *attr, char *page)
> +{
> +	return sysfs_emit(page, "%lx\n", uv_info.supp_add_secret_pcf);
> +}
> +
> +static struct kobj_attribute uv_query_supp_add_secret_pcf_attr =
> +	__ATTR(supp_add_secret_pcf, 0444, uv_query_supp_add_secret_pcf, NULL);
> +
> +static ssize_t uv_query_supp_secret_types(struct kobject *kobj,
> +					  struct kobj_attribute *attr, char *page)
> +{
> +	return sysfs_emit(page, "%lx\n", uv_info.supp_secret_types);
> +}
> +
> +static struct kobj_attribute uv_query_supp_secret_types_attr =
> +	__ATTR(supp_secret_types, 0444, uv_query_supp_secret_types, NULL);
> +

> +static ssize_t uv_query_max_secrets(struct kobject *kobj,
> +				    struct kobj_attribute *attr, char *page)
> +{
> +	return sysfs_emit(page, "%d\n", uv_info.max_secrets);
> +}

uv_query_max_secrets
but then
uv_query_max_num_secrets_attr

To num or not to num. That's the question

> +
> +static struct kobj_attribute uv_query_max_num_secrets_attr =
> +	__ATTR(max_secrets, 0444, uv_query_max_secrets, NULL);

And here the num is gone again.

> +
>   static struct attribute *uv_query_attrs[] = {
>   	&uv_query_facilities_attr.attr,
>   	&uv_query_feature_indications_attr.attr,
> @@ -584,6 +620,10 @@ static struct attribute *uv_query_attrs[] = {
>   	&uv_query_dump_cpu_len_attr.attr,
>   	&uv_query_supp_att_req_hdr_ver_attr.attr,
>   	&uv_query_supp_att_pflags_attr.attr,
> +	&uv_query_supp_add_secret_req_ver_attr.attr,
> +	&uv_query_supp_add_secret_pcf_attr.attr,
> +	&uv_query_supp_secret_types_attr.attr,
> +	&uv_query_max_num_secrets_attr.attr,
>   	NULL,
>   };
>
diff mbox series

Patch

diff --git a/arch/s390/boot/uv.c b/arch/s390/boot/uv.c
index 0a077c0a2056..323b5cae3cf1 100644
--- a/arch/s390/boot/uv.c
+++ b/arch/s390/boot/uv.c
@@ -47,6 +47,10 @@  void uv_query_info(void)
 		uv_info.conf_dump_finalize_len = uvcb.conf_dump_finalize_len;
 		uv_info.supp_att_req_hdr_ver = uvcb.supp_att_req_hdr_ver;
 		uv_info.supp_att_pflags = uvcb.supp_att_pflags;
+		uv_info.supp_add_secret_req_ver = uvcb.supp_add_secret_req_ver;
+		uv_info.supp_add_secret_pcf = uvcb.supp_add_secret_pcf;
+		uv_info.supp_secret_types = uvcb.supp_secret_types;
+		uv_info.max_secrets = uvcb.max_num_secrets;
 	}
 
 #ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST
diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h
index 6180ac8909d5..0f3dee3fce71 100644
--- a/arch/s390/include/asm/uv.h
+++ b/arch/s390/include/asm/uv.h
@@ -123,7 +123,7 @@  struct uv_cb_qui {
 	u32 reserved70[3];			/* 0x0070 */
 	u32 max_num_sec_conf;			/* 0x007c */
 	u64 max_guest_stor_addr;		/* 0x0080 */
-	u8  reserved88[158 - 136];		/* 0x0088 */
+	u8  reserved88[0x9e - 0x88];		/* 0x0088 */
 	u16 max_guest_cpu_id;			/* 0x009e */
 	u64 uv_feature_indications;		/* 0x00a0 */
 	u64 reserveda8;				/* 0x00a8 */
@@ -135,7 +135,12 @@  struct uv_cb_qui {
 	u64 reservedd8;				/* 0x00d8 */
 	u64 supp_att_req_hdr_ver;		/* 0x00e0 */
 	u64 supp_att_pflags;			/* 0x00e8 */
-	u8 reservedf0[256 - 240];		/* 0x00f0 */
+	u64 reservedf0;				/* 0x00f0 */
+	u64 supp_add_secret_req_ver;		/* 0x00f8 */
+	u64 supp_add_secret_pcf;		/* 0x0100 */
+	u64 supp_secret_types;			/* 0x0180 */
+	u16 max_num_secrets;			/* 0x0110 */
+	u8 reserved112[0x120 - 0x112];		/* 0x0112 */
 } __packed __aligned(8);
 
 /* Initialize Ultravisor */
@@ -384,6 +389,10 @@  struct uv_info {
 	unsigned long conf_dump_finalize_len;
 	unsigned long supp_att_req_hdr_ver;
 	unsigned long supp_att_pflags;
+	unsigned long supp_add_secret_req_ver;
+	unsigned long supp_add_secret_pcf;
+	unsigned long supp_secret_types;
+	unsigned short max_secrets;
 };
 
 extern struct uv_info uv_info;
diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c
index d5b5d7e83c17..c0a1bfb01135 100644
--- a/arch/s390/kernel/uv.c
+++ b/arch/s390/kernel/uv.c
@@ -571,6 +571,42 @@  static ssize_t uv_query_supp_att_pflags(struct kobject *kobj,
 static struct kobj_attribute uv_query_supp_att_pflags_attr =
 	__ATTR(supp_att_pflags, 0444, uv_query_supp_att_pflags, NULL);
 
+static ssize_t uv_query_supp_add_secret_req_ver(struct kobject *kobj,
+						struct kobj_attribute *attr, char *page)
+{
+	return sysfs_emit(page, "%lx\n", uv_info.supp_add_secret_req_ver);
+}
+
+static struct kobj_attribute uv_query_supp_add_secret_req_ver_attr =
+	__ATTR(supp_add_secret_req_ver, 0444, uv_query_supp_add_secret_req_ver, NULL);
+
+static ssize_t uv_query_supp_add_secret_pcf(struct kobject *kobj,
+					    struct kobj_attribute *attr, char *page)
+{
+	return sysfs_emit(page, "%lx\n", uv_info.supp_add_secret_pcf);
+}
+
+static struct kobj_attribute uv_query_supp_add_secret_pcf_attr =
+	__ATTR(supp_add_secret_pcf, 0444, uv_query_supp_add_secret_pcf, NULL);
+
+static ssize_t uv_query_supp_secret_types(struct kobject *kobj,
+					  struct kobj_attribute *attr, char *page)
+{
+	return sysfs_emit(page, "%lx\n", uv_info.supp_secret_types);
+}
+
+static struct kobj_attribute uv_query_supp_secret_types_attr =
+	__ATTR(supp_secret_types, 0444, uv_query_supp_secret_types, NULL);
+
+static ssize_t uv_query_max_secrets(struct kobject *kobj,
+				    struct kobj_attribute *attr, char *page)
+{
+	return sysfs_emit(page, "%d\n", uv_info.max_secrets);
+}
+
+static struct kobj_attribute uv_query_max_num_secrets_attr =
+	__ATTR(max_secrets, 0444, uv_query_max_secrets, NULL);
+
 static struct attribute *uv_query_attrs[] = {
 	&uv_query_facilities_attr.attr,
 	&uv_query_feature_indications_attr.attr,
@@ -584,6 +620,10 @@  static struct attribute *uv_query_attrs[] = {
 	&uv_query_dump_cpu_len_attr.attr,
 	&uv_query_supp_att_req_hdr_ver_attr.attr,
 	&uv_query_supp_att_pflags_attr.attr,
+	&uv_query_supp_add_secret_req_ver_attr.attr,
+	&uv_query_supp_add_secret_pcf_attr.attr,
+	&uv_query_supp_secret_types_attr.attr,
+	&uv_query_max_num_secrets_attr.attr,
 	NULL,
 };