linux-kernel - Re: [PATCH v5 00/10] x86/resctrl: Misc cleanup

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Message-ID: <1887b64a-dd18-25ff-a9f4-885c231c60b2@arm.com>
Date:   Thu, 23 Jul 2020 19:31:52 +0100
From:   James Morse <james.morse@....com>
To:     Reinette Chatre <reinette.chatre@...el.com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Fenghua Yu <fenghua.yu@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        H Peter Anvin <hpa@...or.com>,
        Babu Moger <Babu.Moger@....com>
Subject: Re: [PATCH v5 00/10] x86/resctrl: Misc cleanup

Hi Reinette,

On 08/07/2020 17:39, James Morse wrote:
> These are the miscellaneous cleanup patches that floated to the top of
> the MPAM tree.

Is there anything else I should do with this series?
(Does patch 10 need an ACK from anyone else?)

Would a branch or pull request make anyone's life easier?


Thanks,

James

> The only interesting thing are the patches to make the AMD/Intel
> differences something resctrl understands, instead of just 'happening'
> because of the different function pointers.
> This will become more important once MPAM support is added. parse_bw()
> and friends are what enforces resctrl's ABI. Allowing an
> architecture/platform to provide a subtly different function here would
> be bad for user-space.
> 
> MPAM would set arch_has_sparse_bitmaps and arch_has_empty_bitmap, but
> not arch_needs_linear.

> Nothing in this series should change any behaviour.