From: Marc Zyngier <maz@kernel.org>
To: Michael Kelley <mikelley@microsoft.com>
Cc: mark.rutland@arm.com, linux-hyperv@vger.kernel.org,
"boqun.feng" <boqun.feng@gmail.com>,
catalin.marinas@arm.com, jasowang@redhat.com,
linux-kernel@vger.kernel.org, marcelo.cerri@canonical.com,
olaf@aepfle.de, gregkh@linuxfoundation.org, apw@canonical.com,
devel@linuxdriverproject.org, vkuznets <vkuznets@redhat.com>,
will@kernel.org, Sunil Muthuswamy <sunilmut@microsoft.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v5 2/8] arm64: hyperv: Add hypercall and register access functions
Date: Wed, 06 Nov 2019 11:28:30 +0109 [thread overview]
Message-ID: <8cdc86e5bcf861c74069e0d349910c94@www.loen.fr> (raw)
In-Reply-To: <1570129355-16005-3-git-send-email-mikelley@microsoft.com>
On 2019-10-03 20:12, Michael Kelley wrote:
> Add ARM64-specific code to make Hyper-V hypercalls and to
> access virtual processor synthetic registers via hypercalls.
> Hypercalls use a Hyper-V specific calling sequence with a non-zero
> immediate value per Section 2.9 of the SMC Calling Convention
> spec.
I find this "following the spec by actively sidestepping it" counter
productive. You (or rather the Hyper-V people) are reinventing the
wheel (of the slightly square variety) instead of using the standard
that the whole of the ARM ecosystem seems happy to take advantage
of.
I wonder what is the rational for this. If something doesn't quite
work for Hyper-V, I think we'd all like to know.
Thanks,
M.
--
Jazz is not dead. It just smells funny...
_______________________________________________
devel mailing list
devel@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
next prev parent reply other threads:[~2019-11-06 11:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1570129355-16005-1-git-send-email-mikelley@microsoft.com>
[not found] ` <1570129355-16005-3-git-send-email-mikelley@microsoft.com>
[not found] ` <20191104043632.GB182@boqun-laptop.fareast.corp.microsoft.com>
2019-11-06 0:40 ` [PATCH v5 2/8] arm64: hyperv: Add hypercall and register access functions Michael Kelley
2019-11-06 1:58 ` Boqun Feng
2019-11-06 10:19 ` Marc Zyngier [this message]
2019-11-06 17:59 ` Michael Kelley
2019-11-07 9:10 ` Marc Zyngier
2019-11-11 17:16 ` Michael Kelley
[not found] ` <1570129355-16005-4-git-send-email-mikelley@microsoft.com>
2019-11-07 14:19 ` [PATCH v5 3/8] arm64: hyperv: Add memory alloc/free functions for Hyper-V size pages Marc Zyngier
2019-11-08 19:00 ` Michael Kelley
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=8cdc86e5bcf861c74069e0d349910c94@www.loen.fr \
--to=maz@kernel.org \
--cc=apw@canonical.com \
--cc=boqun.feng@gmail.com \
--cc=catalin.marinas@arm.com \
--cc=devel@linuxdriverproject.org \
--cc=gregkh@linuxfoundation.org \
--cc=jasowang@redhat.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-hyperv@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=marcelo.cerri@canonical.com \
--cc=mark.rutland@arm.com \
--cc=mikelley@microsoft.com \
--cc=olaf@aepfle.de \
--cc=sunilmut@microsoft.com \
--cc=vkuznets@redhat.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).