From: Greg KH <greg@kroah.com>
To: Steffen Eiden <seiden@linux.ibm.com>
Cc: agordeev@linux.ibm.com, borntraeger@linux.ibm.com,
david@redhat.com, frankja@linux.ibm.com, gor@linux.ibm.com,
hca@linux.ibm.com, imbrenda@linux.ibm.com, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-s390@vger.kernel.org, nrb@linux.ibm.com, shuah@kernel.org
Subject: Re: [PATCH v3 1/4] drivers/s390/char: Add Ultravisor io device'
Date: Thu, 17 Mar 2022 10:59:29 +0100 [thread overview]
Message-ID: <YjMGgSstSCZAmcVa@kroah.com> (raw)
In-Reply-To: <20220317094706.4921-1-seiden@linux.ibm.com>
On Thu, Mar 17, 2022 at 09:47:06AM +0000, Steffen Eiden wrote:
> This patch adds a new miscdevice to expose some Ultravisor functions
> to userspace. Userspace can send IOCTLs to the uvdevice that will then
> emit a corresponding Ultravisor Call and hands the result over to
> userspace. The uvdevice is available if the Ultravisor Call facility is
> present.
> Userspace can call the Retrieve Attestation Measurement
> Ultravisor Call using IOCTLs on the uvdevice.
>
> The uvdevice will do some sanity checks first.
> Then, copy the request data to kernel space, build the UVCB,
> perform the UV call, and copy the result back to userspace.
>
> Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
> Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Do you have a pointer to the userspace code that interacts with this
kernel driver? That would be good to have to verify that the api here
is sane.
thanks,
greg k-h
next prev parent reply other threads:[~2022-03-17 10:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-04 14:11 [PATCH v3 0/4] s390: Ultravisor device Steffen Eiden
2022-03-04 14:11 ` [PATCH v3 1/4] drivers/s390/char: Add Ultravisor io device Steffen Eiden
2022-03-16 8:23 ` Janosch Frank
2022-03-16 9:02 ` Janosch Frank
2022-03-17 9:47 ` [PATCH v3 1/4] drivers/s390/char: Add Ultravisor io device' Steffen Eiden
2022-03-17 9:59 ` Greg KH [this message]
2022-03-17 11:07 ` [PATCH v3 1/4] drivers/s390/char: Add Ultravisor io device Steffen Eiden
2022-03-17 11:23 ` Steffen Eiden
2022-03-17 11:59 ` Greg KH
2022-03-04 14:11 ` [PATCH v3 2/4] drivers/s390/char: Add Query Ultravisor Information to uvdevice Steffen Eiden
2022-03-16 8:56 ` Janosch Frank
2022-03-04 14:11 ` [PATCH v3 3/4] selftests: drivers/s390x: Add uvdevice tests Steffen Eiden
2022-03-04 14:11 ` [PATCH v3 4/4] selftests: drivers/s390x: Add uvdevice QUI tests Steffen Eiden
2022-03-16 9:04 ` [PATCH v3 0/4] s390: Ultravisor device 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=YjMGgSstSCZAmcVa@kroah.com \
--to=greg@kroah.com \
--cc=agordeev@linux.ibm.com \
--cc=borntraeger@linux.ibm.com \
--cc=david@redhat.com \
--cc=frankja@linux.ibm.com \
--cc=gor@linux.ibm.com \
--cc=hca@linux.ibm.com \
--cc=imbrenda@linux.ibm.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=nrb@linux.ibm.com \
--cc=seiden@linux.ibm.com \
--cc=shuah@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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.