linux-kernel - RE: [PATCH V4] POWER: perf_event: Skip updating kernel counters if register value shrinks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <AE90C24D6B3A694183C094C60CF0A2F6D8AD03@saturn3.aculab.com>
Date:	Wed, 27 Apr 2011 13:34:58 +0100
From:	"David Laight" <David.Laight@...LAB.COM>
To:	"Eric B Munson" <emunson@...bm.net>
Cc:	<benh@...nel.crashing.org>, <a.p.zijlstra@...llo.nl>,
	<paulus@...ba.org>, <mingo@...e.hu>, <acme@...stprotocols.net>,
	<linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
	<anton@...ba.org>, <stable@...nel.org>
Subject: RE: [PATCH V4] POWER: perf_event: Skip updating kernel counters if register value shrinks

> But it isn't, and it doesn't have trouble with 2^32 - 1.  

what about:
prev = 0x00000001
val  = 0xffffffff

	David


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/