From: Elliot Berman <quic_eberman@quicinc.com>
To: Bjorn Andersson <quic_bjorande@quicinc.com>
Cc: Elliot Berman <quic_eberman@quicinc.com>,
Murali Nalajala <quic_mnalajal@quicinc.com>,
Trilok Soni <quic_tsoni@quicinc.com>,
"Srivatsa Vaddagiri" <quic_svaddagi@quicinc.com>,
Carl van Schaik <quic_cvanscha@quicinc.com>,
Andy Gross <agross@kernel.org>,
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
Jassi Brar <jassisinghbrar@gmail.com>,
<linux-arm-kernel@lists.infradead.org>,
Mark Rutland <mark.rutland@arm.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Sudeep Holla <sudeep.holla@arm.com>,
Marc Zyngier <maz@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Jonathan Corbet <corbet@lwn.net>, "Will Deacon" <will@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
"Arnd Bergmann" <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
<devicetree@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-arm-msm@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v4 10/14] gunyah: sysfs: Add node to describe supported features
Date: Wed, 28 Sep 2022 12:56:29 -0700 [thread overview]
Message-ID: <20220928195633.2348848-11-quic_eberman@quicinc.com> (raw)
In-Reply-To: <20220928195633.2348848-1-quic_eberman@quicinc.com>
Add a sysfs node to list the features that the Gunyah hypervisor and
Linux supports. For now, Linux support cspace (capability IDs) and
message queues, so only report those..
Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>
---
Documentation/ABI/testing/sysfs-hypervisor-gunyah | 15 +++++++++++++++
drivers/virt/gunyah/sysfs.c | 15 +++++++++++++++
2 files changed, 30 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-hypervisor-gunyah b/Documentation/ABI/testing/sysfs-hypervisor-gunyah
index 7d74e74e9edd..6d0cde30355a 100644
--- a/Documentation/ABI/testing/sysfs-hypervisor-gunyah
+++ b/Documentation/ABI/testing/sysfs-hypervisor-gunyah
@@ -1,3 +1,18 @@
+What: /sys/hypervisor/gunyah/features
+Date: October 2022
+KernelVersion: 6.1
+Contact: linux-arm-msm@vger.kernel.org
+Description: If running under Gunyah:
+ Space separated list of features supported by Linux and Gunyah:
+ "cspace": Gunyah devices
+ "doorbell": Sending/receiving virtual interrupts via Gunyah doorbells
+ "message-queue": Sending/receiving messages via Gunyah message queues
+ "vic": Interrupt lending
+ "vpm": Virtual platform management
+ "vcpu": Virtual CPU management
+ "memextent": Memory lending/management
+ "trace": Gunyah hypervisor tracing
+
What: /sys/hypervisor/gunyah/api
Date: October 2022
KernelVersion: 6.1
diff --git a/drivers/virt/gunyah/sysfs.c b/drivers/virt/gunyah/sysfs.c
index ec11510cbece..f8ec0553c197 100644
--- a/drivers/virt/gunyah/sysfs.c
+++ b/drivers/virt/gunyah/sysfs.c
@@ -25,9 +25,24 @@ static ssize_t variant_show(struct kobject *kobj, struct kobj_attribute *attr, c
}
static struct kobj_attribute variant_attr = __ATTR_RO(variant);
+static ssize_t features_show(struct kobject *kobj, struct kobj_attribute *attr, char *buffer)
+{
+ int len = 0;
+
+ if (GH_IDENTIFY_PARTITION_CSPACE(gunyah_api.flags))
+ len += sysfs_emit_at(buffer, len, "cspace ");
+ if (GH_IDENTIFY_MSGQUEUE(gunyah_api.flags))
+ len += sysfs_emit_at(buffer, len, "message-queue ");
+
+ len += sysfs_emit_at(buffer, len, "\n");
+ return len;
+}
+static struct kobj_attribute features_attr = __ATTR_RO(features);
+
static struct attribute *gunyah_attrs[] = {
&api_attr.attr,
&variant_attr.attr,
+ &features_attr.attr,
NULL
};
--
2.25.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-09-28 20:03 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-28 19:56 [PATCH v4 00/14] Drivers for gunyah hypervisor Elliot Berman
2022-09-28 19:56 ` [PATCH v4 01/14] docs: gunyah: Introduce Gunyah Hypervisor Elliot Berman
2022-09-29 3:43 ` Bagas Sanjaya
2022-09-29 4:02 ` Elliot Berman
2022-09-28 19:56 ` [PATCH v4 02/14] dt-bindings: Add binding for gunyah hypervisor Elliot Berman
2022-09-28 19:56 ` [PATCH v4 03/14] gunyah: Common types and error codes for Gunyah hypercalls Elliot Berman
2022-09-28 19:56 ` [PATCH v4 04/14] arm64: smccc: Include alternative-macros.h Elliot Berman
2022-09-28 19:56 ` [PATCH v4 05/14] virt: gunyah: Add hypercalls to identify Gunyah Elliot Berman
2022-09-28 19:56 ` [PATCH v4 06/14] virt: gunyah: Add sysfs nodes Elliot Berman
2022-09-30 12:09 ` Greg Kroah-Hartman
2022-10-04 23:50 ` Elliot Berman
2022-10-05 6:23 ` Greg Kroah-Hartman
2022-09-28 19:56 ` [PATCH v4 07/14] mailbox: Allow direct registration to a channel Elliot Berman
2022-09-28 19:56 ` [PATCH v4 08/14] virt: gunyah: msgq: Add hypercalls to send and receive messages Elliot Berman
2022-09-28 19:56 ` [PATCH v4 09/14] mailbox: Add Gunyah message queue mailbox Elliot Berman
2022-09-29 16:59 ` Bjorn Andersson
2022-09-29 17:37 ` Jassi Brar
2022-09-28 19:56 ` Elliot Berman [this message]
2022-09-29 7:36 ` [PATCH v4 10/14] gunyah: sysfs: Add node to describe supported features Joe Perches
2022-09-29 20:47 ` Elliot Berman
2022-10-02 23:30 ` Jeff Johnson
2022-10-02 23:58 ` Joe Perches
2022-09-30 12:06 ` Greg Kroah-Hartman
2022-10-04 23:53 ` Elliot Berman
2022-09-28 19:56 ` [PATCH v4 11/14] gunyah: rsc_mgr: Add resource manager RPC core Elliot Berman
2022-09-28 19:56 ` [PATCH v4 12/14] gunyah: rsc_mgr: Add RPC for console services Elliot Berman
2022-09-30 12:22 ` Greg Kroah-Hartman
2022-10-03 1:46 ` new checkpatch flexible array test ? (was Re: [PATCH v4 12/14] gunyah: rsc_mgr: Add RPC for console services) Joe Perches
2022-10-03 5:29 ` Greg Kroah-Hartman
2022-10-03 5:38 ` Joe Perches
2022-10-31 18:23 ` Gustavo A. R. Silva
2022-09-28 19:56 ` [PATCH v4 13/14] gunyah: rsc_mgr: Add auxiliary devices for console Elliot Berman
2022-09-30 12:19 ` Greg Kroah-Hartman
2022-10-04 23:49 ` Elliot Berman
2022-10-05 6:21 ` Greg Kroah-Hartman
2022-10-05 21:47 ` Elliot Berman
2022-10-06 6:28 ` Greg Kroah-Hartman
2022-09-28 19:56 ` [PATCH v4 14/14] tty: gunyah: Add tty console driver for RM Console Services Elliot Berman
2022-09-30 12:17 ` Greg Kroah-Hartman
2022-10-07 5:59 ` Elliot Berman
2022-10-07 7:40 ` Greg Kroah-Hartman
2022-10-09 20:59 ` Elliot Berman
2022-10-10 20:23 ` Greg Kroah-Hartman
2022-10-10 20:58 ` Elliot Berman
2022-10-11 6:22 ` Greg Kroah-Hartman
2022-10-11 22:04 ` Elliot Berman
2022-10-12 6:53 ` Greg Kroah-Hartman
2022-10-08 7:41 ` Zhou Furong
2022-10-08 9:52 ` Greg Kroah-Hartman
2022-10-03 7:01 ` Jiri Slaby
2022-10-10 18:06 ` Elliot Berman
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=20220928195633.2348848-11-quic_eberman@quicinc.com \
--to=quic_eberman@quicinc.com \
--cc=agross@kernel.org \
--cc=arnd@arndb.de \
--cc=catalin.marinas@arm.com \
--cc=corbet@lwn.net \
--cc=devicetree@vger.kernel.org \
--cc=dmitry.baryshkov@linaro.org \
--cc=gregkh@linuxfoundation.org \
--cc=jassisinghbrar@gmail.com \
--cc=krzysztof.kozlowski+dt@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=lorenzo.pieralisi@arm.com \
--cc=mark.rutland@arm.com \
--cc=maz@kernel.org \
--cc=quic_bjorande@quicinc.com \
--cc=quic_cvanscha@quicinc.com \
--cc=quic_mnalajal@quicinc.com \
--cc=quic_svaddagi@quicinc.com \
--cc=quic_tsoni@quicinc.com \
--cc=robh+dt@kernel.org \
--cc=sudeep.holla@arm.com \
--cc=will@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;
as well as URLs for NNTP newsgroup(s).