linux-kernel - Re: [PATCH] ARC: Explicitly set ARCH_SLAB

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] [day] [month] [year] [list]

Date:   Tue, 19 Feb 2019 15:30:19 -0800
From:   Vineet Gupta <vineet.gupta1@...opsys.com>
To:     Alexey Brodkin <alexey.brodkin@...opsys.com>
CC:     David Laight <David.Laight@...LAB.COM>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>,
        Arnd Bergmann <arnd.bergmann@...aro.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        Mark Rutland <mark.rutland@....com>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH] ARC: Explicitly set ARCH_SLAB_MINALIGN = 8

On 2/18/19 12:53 AM, Alexey Brodkin wrote:
> So are you OK with this patch or something should be done before applying?

Or your original patch was

+#ifdef CONFIG_ARC_HAS_LL64
+#define ARCH_SLAB_MINALIGN     8
+#endif

I don't think this issue is related to LL64 at all. A long long on ARC could be 4
byte aligned (as mandated by the ABI). It could use LDD or 2 separate LDs. This
has no bearing on the fact that LLOCKD have to use a 64-bit aligned addresses. So
I think we should just do this unconditionally. Agree ?