linux-kernel - Re: x86/smp: adding new trace points

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]

Date:   Wed, 13 May 2020 15:42:07 +0100
From:   Wojciech Kudla <wk.kernel@...il.com>
To:     Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org
Cc:     mingo@...hat.com, hpa@...or.com, x86@...nel.org
Subject: Re: x86/smp: adding new trace points

On 13/05/2020 13:24, Thomas Gleixner wrote:

> Why would the SMP call function single interrupt go through the
> PLATFORM_IPI_VECTOR? It goes as the name says through the
> CALL_FUNCTION_SINGLE_VECTOR.
> 

Wrong vector, my bad.

However 2) still stands in my opinion. We don't have "ipi raise" trace point for x86.
RESCHEDULE_VECTOR, CALL_FUNCTION_SINGLE_VECTOR, as well as TLB invalidation vectors are essentially inter-processor-interrupts if I'm not mistaken.
Would a patch adding such trace point be considered here?

Thanks,
Wojtek