From: Janosch Frank <frankja@linux.ibm.com>
To: kvm@vger.kernel.org
Cc: linux-s390@vger.kernel.org, imbrenda@linux.ibm.com,
david@redhat.com, borntraeger@linux.ibm.com
Subject: [PATCH 1/9] s390x: Add SE hdr query information
Date: Wed, 23 Feb 2022 09:19:59 +0000 [thread overview]
Message-ID: <20220223092007.3163-2-frankja@linux.ibm.com> (raw)
In-Reply-To: <20220223092007.3163-1-frankja@linux.ibm.com>
We have information about the supported se header version and pcf bits
so let's expose it via the sysfs files.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
---
arch/s390/boot/uv.c | 2 ++
arch/s390/include/asm/uv.h | 7 ++++++-
arch/s390/kernel/uv.c | 20 ++++++++++++++++++++
3 files changed, 28 insertions(+), 1 deletion(-)
diff --git a/arch/s390/boot/uv.c b/arch/s390/boot/uv.c
index e6be155ab2e5..b100b57cf15d 100644
--- a/arch/s390/boot/uv.c
+++ b/arch/s390/boot/uv.c
@@ -41,6 +41,8 @@ void uv_query_info(void)
uv_info.max_num_sec_conf = uvcb.max_num_sec_conf;
uv_info.max_guest_cpu_id = uvcb.max_guest_cpu_id;
uv_info.uv_feature_indications = uvcb.uv_feature_indications;
+ uv_info.supp_se_hdr_ver = uvcb.supp_se_hdr_versions;
+ uv_info.supp_se_hdr_pcf = uvcb.supp_se_hdr_pcf;
}
#ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST
diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h
index 86218382d29c..7d6c78b61bf2 100644
--- a/arch/s390/include/asm/uv.h
+++ b/arch/s390/include/asm/uv.h
@@ -107,7 +107,10 @@ struct uv_cb_qui {
u8 reserved88[158 - 136]; /* 0x0088 */
u16 max_guest_cpu_id; /* 0x009e */
u64 uv_feature_indications; /* 0x00a0 */
- u8 reserveda8[200 - 168]; /* 0x00a8 */
+ u64 reserveda8; /* 0x00a8 */
+ u64 supp_se_hdr_versions; /* 0x00b0 */
+ u64 supp_se_hdr_pcf; /* 0x00b8 */
+ u64 reservedc0; /* 0x00c0 */
} __packed __aligned(8);
/* Initialize Ultravisor */
@@ -285,6 +288,8 @@ struct uv_info {
unsigned int max_num_sec_conf;
unsigned short max_guest_cpu_id;
unsigned long uv_feature_indications;
+ unsigned long supp_se_hdr_ver;
+ unsigned long supp_se_hdr_pcf;
};
extern struct uv_info uv_info;
diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c
index a5425075dd25..852840384e75 100644
--- a/arch/s390/kernel/uv.c
+++ b/arch/s390/kernel/uv.c
@@ -392,6 +392,24 @@ static ssize_t uv_query_facilities(struct kobject *kobj,
static struct kobj_attribute uv_query_facilities_attr =
__ATTR(facilities, 0444, uv_query_facilities, NULL);
+static ssize_t uv_query_supp_se_hdr_ver(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return sysfs_emit(buf, "%lx\n", uv_info.supp_se_hdr_ver);
+}
+
+static struct kobj_attribute uv_query_supp_se_hdr_ver_attr =
+ __ATTR(supp_se_hdr_ver, 0444, uv_query_supp_se_hdr_ver, NULL);
+
+static ssize_t uv_query_supp_se_hdr_pcf(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return sysfs_emit(buf, "%lx\n", uv_info.supp_se_hdr_pcf);
+}
+
+static struct kobj_attribute uv_query_supp_se_hdr_pcf_attr =
+ __ATTR(supp_se_hdr_pcf, 0444, uv_query_supp_se_hdr_pcf, NULL);
+
static ssize_t uv_query_feature_indications(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
@@ -437,6 +455,8 @@ static struct attribute *uv_query_attrs[] = {
&uv_query_max_guest_cpus_attr.attr,
&uv_query_max_guest_vms_attr.attr,
&uv_query_max_guest_addr_attr.attr,
+ &uv_query_supp_se_hdr_ver_attr.attr,
+ &uv_query_supp_se_hdr_pcf_attr.attr,
NULL,
};
--
2.32.0
next prev parent reply other threads:[~2022-02-23 9:20 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-23 9:19 [PATCH 0/9] kvm: s390: Add PV dump support Janosch Frank
2022-02-23 9:19 ` Janosch Frank [this message]
2022-03-01 17:22 ` [PATCH 1/9] s390x: Add SE hdr query information Claudio Imbrenda
2022-02-23 9:20 ` [PATCH 2/9] s390: uv: Add dump fields to query Janosch Frank
2022-03-01 17:24 ` Claudio Imbrenda
2022-02-23 9:20 ` [PATCH 3/9] KVM: s390: pv: Add query interface Janosch Frank
2022-02-23 11:30 ` Thomas Huth
2022-02-23 12:47 ` Janosch Frank
2022-03-01 17:32 ` Claudio Imbrenda
2022-03-02 9:03 ` Janosch Frank
2022-03-02 12:04 ` Claudio Imbrenda
2022-03-02 12:41 ` Janosch Frank
2022-02-23 9:20 ` [PATCH 4/9] KVM: s390: pv: Add dump support definitions Janosch Frank
2022-02-23 9:20 ` [PATCH 5/9] KVM: s390: pv: Add query dump information Janosch Frank
2022-03-01 17:34 ` Claudio Imbrenda
2022-02-23 9:20 ` [PATCH 6/9] kvm: s390: Add configuration dump functionality Janosch Frank
2022-02-23 18:13 ` kernel test robot
2022-02-23 19:25 ` kernel test robot
2022-02-23 9:20 ` [PATCH 7/9] kvm: s390: Add CPU " Janosch Frank
2022-02-23 19:46 ` kernel test robot
2022-02-23 9:20 ` [PATCH 8/9] Documentation: virt: Protected virtual machine dumps Janosch Frank
2022-02-23 9:20 ` [PATCH 9/9] Documentation/virt/kvm/api.rst: Add protvirt dump/info api descriptions Janosch Frank
-- strict thread matches above, loose matches on Subject: below --
2022-04-28 13:00 [PATCH 0/9] kvm: s390: Add PV dump support Janosch Frank
2022-04-28 13:00 ` [PATCH 1/9] s390x: Add SE hdr query information Janosch Frank
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220223092007.3163-2-frankja@linux.ibm.com \
--to=frankja@linux.ibm.com \
--cc=borntraeger@linux.ibm.com \
--cc=david@redhat.com \
--cc=imbrenda@linux.ibm.com \
--cc=kvm@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox