From: Peter Xu <peterx@redhat.com>
To: Markus Armbruster <armbru@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>,
pbonzini@redhat.com, qemu-devel@nongnu.org,
Luiz Capitulino <lcapitulino@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 1/8] qdict: fix unbounded stack for qdict_array_entries
Date: Thu, 10 Mar 2016 09:30:07 +0800 [thread overview]
Message-ID: <20160310013007.GC4091@pxdev.xzpeter.org> (raw)
In-Reply-To: <878u1r1hzc.fsf@blackfin.pond.sub.org>
On Wed, Mar 09, 2016 at 10:03:51PM +0100, Markus Armbruster wrote:
> Kevin Wolf <kwolf@redhat.com> writes:
> > I think it's unnecessary, but fine with me. I'm just trying to say that
> > making it a fixed 128 byte array on the stack certainly doesn't improve
> > anything.
>
> It trades a few bytes of stack for a fixed stack frame. A fixed stack
> frame is a bit more efficient (not that it matters here), and lets us
> scratch the function permanently from the list of stack fram size false
> positives. I think that's a reasonable trade.
Yes, that's what I want to do. I did fix nothing, but tried to avoid
the warning. Sorry that I made it a wrong title (also in the
following splitted patch). I should say:
"Fix unbounded stack warning for qdict_array_entries"
Rather than:
"Fix unbounded stack for qdict_array_entries"
Thanks.
Peter
next prev parent reply other threads:[~2016-03-10 1:30 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-08 7:00 [Qemu-devel] [PATCH 0/8] Fix several unbounded stack usage Peter Xu
2016-03-08 7:00 ` [Qemu-devel] [PATCH 1/8] qdict: fix unbounded stack for qdict_array_entries Peter Xu
2016-03-08 8:22 ` Markus Armbruster
2016-03-08 10:19 ` Kevin Wolf
2016-03-08 16:21 ` Eric Blake
2016-03-08 16:30 ` Kevin Wolf
2016-03-08 16:50 ` Daniel P. Berrange
2016-03-09 2:57 ` Peter Xu
2016-03-09 3:04 ` Eric Blake
2016-03-09 3:27 ` Peter Xu
2016-03-09 9:48 ` Kevin Wolf
2016-03-09 13:23 ` Markus Armbruster
2016-03-09 13:57 ` Kevin Wolf
2016-03-09 21:03 ` Markus Armbruster
2016-03-10 1:30 ` Peter Xu [this message]
2016-03-08 7:00 ` [Qemu-devel] [PATCH 2/8] block: fix unbounded stack for dump_qdict Peter Xu
2016-03-08 8:12 ` Markus Armbruster
2016-03-08 8:53 ` Fam Zheng
2016-03-08 13:47 ` Markus Armbruster
2016-03-09 3:00 ` Peter Xu
2016-03-08 9:31 ` Peter Xu
2016-03-08 13:50 ` Markus Armbruster
2016-03-08 12:17 ` Paolo Bonzini
2016-03-09 3:18 ` Peter Xu
2016-03-08 7:00 ` [Qemu-devel] [PATCH 3/8] usb: fix unbounded stack for ohci_td_pkt Peter Xu
2016-03-08 12:20 ` Paolo Bonzini
2016-03-09 4:59 ` Peter Xu
2016-03-08 7:00 ` [Qemu-devel] [PATCH 4/8] usb: fix unbounded stack for xhci_dma_write_u32s Peter Xu
2016-03-08 7:26 ` Peter Maydell
2016-03-09 5:12 ` Peter Xu
2016-03-08 12:21 ` Paolo Bonzini
2016-03-09 5:08 ` Peter Xu
2016-03-09 7:53 ` Paolo Bonzini
2016-03-09 8:07 ` Peter Xu
2016-03-09 8:34 ` Markus Armbruster
2016-03-09 9:19 ` Peter Xu
2016-03-09 12:52 ` Markus Armbruster
2016-03-09 12:59 ` Paolo Bonzini
2016-03-10 2:07 ` Peter Xu
2016-03-08 7:00 ` [Qemu-devel] [PATCH 5/8] usb: fix unbounded stack for inotify_watchfn Peter Xu
2016-03-08 7:20 ` Peter Maydell
2016-03-08 12:22 ` Paolo Bonzini
2016-03-09 5:22 ` Peter Xu
2016-03-08 12:22 ` Paolo Bonzini
2016-03-09 5:23 ` Peter Xu
2016-03-08 7:00 ` [Qemu-devel] [PATCH 6/8] usb: fix unbounded stack for usb_mtp_add_str Peter Xu
2016-03-08 8:10 ` Gerd Hoffmann
2016-03-09 5:29 ` Peter Xu
2016-03-08 7:00 ` [Qemu-devel] [PATCH 7/8] migration: fix unbounded stack for source_return_path_thread Peter Xu
2016-03-08 9:48 ` Juan Quintela
2016-03-08 12:27 ` Paolo Bonzini
2016-03-08 12:26 ` Paolo Bonzini
2016-03-09 5:27 ` Peter Xu
2016-03-08 7:00 ` [Qemu-devel] [PATCH 8/8] hw/i386: fix unbounded stack for load_multiboot Peter Xu
2016-03-08 7:17 ` Peter Maydell
2016-03-08 12:29 ` Paolo Bonzini
2016-03-09 5:39 ` Peter Xu
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