From: Ian Campbell <ian.campbell@citrix.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: "Keir (Xen.org)" <keir@xen.org>,
Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>,
Ian Jackson <Ian.Jackson@eu.citrix.com>,
"Tim (Xen.org)" <tim@xen.org>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>,
Julien Grall <julien.grall@citrix.com>
Subject: Re: [PATCH 4/4] xen/arm: correctly handle an empty array of platform descs.
Date: Wed, 15 May 2013 10:47:34 +0100 [thread overview]
Message-ID: <1368611254.11138.6.camel@hastur.hellion.org.uk> (raw)
In-Reply-To: <5193518E02000078000D647F@nat28.tlf.novell.com>
> As Linux doesn't play with symbol visibility, we're really alone
> having this problem, and hence indeed need to go through and
> audit all places where the potential for empty ranges exists.
The comment says "Results in more efficient PIC code (no indirections
through GOT or PLT).", how much PIC code is there in the hypervisor
anyway?
> But you said "<" instead of "!=" didn't have any surprising side
> effects, so quite likely we won't need much code to change.
"<" fails because it does process the (non-existent) first entry in the
array. This happened to be "safe" in the case I saw but it wouldn't be
in general.
Ian.
next prev parent reply other threads:[~2013-05-15 9:47 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-13 16:22 [PATCH 0/4] xen/arm: fixes for 64 bit Ian Campbell
2013-05-13 16:22 ` [PATCH 1/4] xen/arm: Add emacs magic blocks to asm files Ian Campbell
2013-05-13 16:44 ` Stefano Stabellini
2013-05-13 17:35 ` Tim Deegan
2013-05-13 16:23 ` [PATCH 2/4] xen/arm64: do not clobber callee saved register in early_putch Ian Campbell
2013-05-13 16:53 ` Stefano Stabellini
2013-05-13 16:23 ` [PATCH 3/4] xen/arm: support "arm, armv8-timer" DTS compatibility Ian Campbell
2013-05-13 16:46 ` Stefano Stabellini
2013-05-13 16:23 ` [PATCH 4/4] xen/arm: correctly handle an empty array of platform descs Ian Campbell
2013-05-13 16:48 ` Stefano Stabellini
2013-05-14 9:32 ` Ian Campbell
2013-05-14 9:48 ` Jan Beulich
2013-05-14 10:21 ` Ian Campbell
2013-05-14 14:29 ` Jan Beulich
2013-05-14 14:37 ` Jan Beulich
2013-05-14 14:54 ` Ian Campbell
2013-05-14 14:56 ` Ian Campbell
2013-05-14 15:07 ` Ian Campbell
2013-05-14 15:46 ` Jan Beulich
2013-05-14 16:41 ` Ian Campbell
2013-05-15 7:12 ` Jan Beulich
2013-05-15 9:47 ` Ian Campbell [this message]
2013-05-15 12:19 ` Jan Beulich
2013-05-15 13:47 ` Ian Campbell
2013-05-16 10:17 ` Jan Beulich
2013-05-17 10:07 ` Ian Campbell
2013-05-17 10:39 ` Jan Beulich
2013-05-17 14:34 ` Ian Campbell
2013-05-17 15:34 ` Jan Beulich
2013-05-17 17:03 ` Ian Campbell
2013-05-21 7:54 ` Jan Beulich
2013-05-14 15:11 ` Jan Beulich
2013-05-14 15:14 ` Ian Campbell
2013-05-14 9:36 ` [PATCH 0/4] xen/arm: fixes for 64 bit Ian Campbell
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