Re: [PATCH for-4.9] livepatch: Declare live patching as a supported feature

From: Ian Jackson <ian.jackson@eu.citrix.com>
To: Julien Grall <julien.grall@arm.com>
Cc: Lars Kurth <lars.kurth@citrix.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	George Dunlap <George.Dunlap@eu.citrix.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	Wei Liu <liuw@liuw.name>,
	xen-devel@lists.xen.org,
	Ross Lagerwall <ross.lagerwall@citrix.com>,
	Jan Beulich <jbeulich@suse.com>
Subject: Re: [PATCH for-4.9] livepatch: Declare live patching as a supported feature
Date: Tue, 27 Jun 2017 11:46:27 +0100	[thread overview]
Message-ID: <22866.14211.126404.876374@mariner.uk.xensource.com> (raw)
In-Reply-To: <6eb72057-ec8e-b248-f659-f4291e33b981@arm.com>

Julien Grall writes ("Re: [PATCH for-4.9] livepatch: Declare live patching as a supported feature"):
> On 06/26/2017 10:07 PM, Konrad Rzeszutek Wilk wrote:
> > On Mon, Jun 26, 2017 at 07:29:22PM +0100, Julien Grall wrote:
> >> enabled for all architectures by default.
> > 
> > And the OSSTest can test all of those.
> 
> Can we enable them by default? I know that we limited the number of 
> tests for ARM64 due to limited bandwidth. But I don't think we have 
> anything preventing it on ARM32.

We're slightly short of armhf bandwidth too and are about to become
more so, with the expansion of the facility (and our difficulty
getting more armhf hardware).

> > OK. Perhaps then only for x86 until ARM operational users pipe up?
> 
> That would be my preference. My main concern is to handle security issue 
> afterwards because we didn't give any kick at the code.

SGTM

Ian.

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