From: "Jan Beulich" <JBeulich@suse.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Keir Fraser <keir@xen.org>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Ian Jackson <Ian.Jackson@eu.citrix.com>, Tim Deegan <tim@xen.org>,
Ian Campbell <Ian.Campbell@eu.citrix.com>,
xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: [PATCH 1/2] make fls() and ffs() consistent across architectures
Date: Fri, 23 Jan 2015 14:53:27 +0000 [thread overview]
Message-ID: <54C26E770200007800058E3D@mail.emea.novell.com> (raw)
In-Reply-To: <54C25CDD.4080200@citrix.com>
>>> On 23.01.15 at 15:38, <andrew.cooper3@citrix.com> wrote:
> As for the x86 asm itself, what about
> http://lkml.kernel.org/r/5058741E020000780009C014@nat28.tlf.novell.com ?
> It would appear that the same optimisation is relevant for Xens __ffs()
For find_first_set_bit() (and perhaps also __scanbit()) you mean?
Indeed, and I'm sure I meant to pull it over - and then forgot after
it got accepted. Will do that now.
Jan
next prev parent reply other threads:[~2015-01-23 14:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-22 13:26 [PATCH 0/2] fls() / ffs() adjustments Jan Beulich
2015-01-22 13:38 ` [PATCH 1/2] make fls() and ffs() consistent across architectures Jan Beulich
2015-01-23 14:38 ` Andrew Cooper
2015-01-23 14:53 ` Jan Beulich [this message]
2015-01-22 13:38 ` [PATCH 2/2] arm64: fix fls() Jan Beulich
2015-01-22 14:01 ` Tim Deegan
2015-01-22 14:05 ` Jan Beulich
2015-01-22 14:29 ` Tim Deegan
2015-01-22 14:59 ` [PATCH 0/2] fls() / ffs() adjustments Ian Campbell
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