diff options
| author | Steffen Eiden <seiden@linux.ibm.com> | 2022-05-18 13:59:08 +0000 |
|---|---|---|
| committer | Janosch Frank <frankja@linux.ibm.com> | 2022-07-11 11:29:51 +0200 |
| commit | 1b6abe95b522b313569469498c8c648a5ee535ba (patch) | |
| tree | a45c46d74168024142d61a9f312f490fac0e0c4d /arch/s390/kernel/uv.c | |
| parent | b9df116cb7656c7e7f869cf9d05b54b3fb3f944b (diff) | |
s390: Add attestation query information
We have information about the supported attestation header version
and plaintext attestation flag bits.
Let's expose it via the sysfs files.
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/lkml/20220601100245.3189993-1-seiden@linux.ibm.com/
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/uv.c')
| -rw-r--r-- | arch/s390/kernel/uv.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c index 84fe33b6af4d..c13d5a7b71f0 100644 --- a/arch/s390/kernel/uv.c +++ b/arch/s390/kernel/uv.c @@ -479,6 +479,24 @@ static ssize_t uv_query_max_guest_addr(struct kobject *kobj, static struct kobj_attribute uv_query_max_guest_addr_attr = __ATTR(max_address, 0444, uv_query_max_guest_addr, NULL); +static ssize_t uv_query_supp_att_req_hdr_ver(struct kobject *kobj, + struct kobj_attribute *attr, char *page) +{ + return scnprintf(page, PAGE_SIZE, "%lx\n", uv_info.supp_att_req_hdr_ver); +} + +static struct kobj_attribute uv_query_supp_att_req_hdr_ver_attr = + __ATTR(supp_att_req_hdr_ver, 0444, uv_query_supp_att_req_hdr_ver, NULL); + +static ssize_t uv_query_supp_att_pflags(struct kobject *kobj, + struct kobj_attribute *attr, char *page) +{ + return scnprintf(page, PAGE_SIZE, "%lx\n", uv_info.supp_att_pflags); +} + +static struct kobj_attribute uv_query_supp_att_pflags_attr = + __ATTR(supp_att_pflags, 0444, uv_query_supp_att_pflags, NULL); + static struct attribute *uv_query_attrs[] = { &uv_query_facilities_attr.attr, &uv_query_feature_indications_attr.attr, @@ -490,6 +508,8 @@ static struct attribute *uv_query_attrs[] = { &uv_query_dump_storage_state_len_attr.attr, &uv_query_dump_finalize_len_attr.attr, &uv_query_dump_cpu_len_attr.attr, + &uv_query_supp_att_req_hdr_ver_attr.attr, + &uv_query_supp_att_pflags_attr.attr, NULL, }; |