linux-kernel - Re: ARC Assembler: bundle_align

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 for Android: free password hash cracker in your pocket

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

Message-ID: <C2D7FE5348E1B147BCA15975FBA2307501A2526536@us01wembx1.internal.synopsys.com>
Date:   Thu, 13 Jun 2019 20:35:26 +0000
From:   Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:     Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
        "Cupertino.Miranda@...opsys.com" <Cupertino.Miranda@...opsys.com>
CC:     Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>,
        "Claudiu.Zissulescu@...opsys.com" <Claudiu.Zissulescu@...opsys.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: ARC Assembler: bundle_align_mode directive support

On 6/13/19 11:14 AM, Eugeniy Paltsev wrote:
> BTW:
> there is discussion in Linux ML about implementation of static calls.
> The idea is to patch immediate operand in jump instruction instead of using function pointers to optimize hot code.
> @vineet I bet you'll like this :)
>
> Current v3 patch revision is for x86 only and it's not applied yet. However I expect (based on comments to last patches)
> it'll be applied after several respins. 

Indeed when researching on jump labels I saw that and indeed like that approach a lot.


> It would be nice to implement it for ARC too.

Absolutely.

> And x86 static calls implementation uses '.bundle_align_mode' directive too.

Ok then we have a case for pushing for this feature in tools !