linux-kernel - Re: [PATCH v2 2/2] firmware: arm_scmi: Augment SMC/HVC to allow optional interrupt

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:   Fri, 13 Nov 2020 09:47:32 +0000
From:   Sudeep Holla <sudeep.holla@....com>
To:     Jim Quinlan <james.quinlan@...adcom.com>
Cc:     bcm-kernel-feedback-list@...adcom.com,
        Sudeep Holla <sudeep.holla@....com>,
        Cristian Marussi <cristian.marussi@....com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] firmware: arm_scmi: Augment SMC/HVC to allow
 optional interrupt

On Thu, Nov 12, 2020 at 12:56:27PM -0500, Jim Quinlan wrote:
> The SMC/HVC SCMI transport is modified to allow the completion of an SCMI
> message to be indicated by an interrupt rather than the return of the smc
> call.  This accommodates the existing behavior of the BrcmSTB SCMI
> "platform" whose SW is already out in the field and cannot be changed.
>

Sorry for missing to check with you earlier. Are these not fast smc calls ?
Can we check the SMC Function IDs for the same and expect IRQ to be present
if they are not fast calls ?

-- 
Regards,
Sudeep