linux-kernel - Re: [PATCH V7 00/41] Intel(R) Resource Director Technology Cache Pseudo-Locking enabling

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Date:   Sun, 24 Jun 2018 02:20:25 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     fenghua.yu@...el.com, Tony Luck <tony.luck@...el.com>,
        vikas.shivappa@...ux.intel.com, gavin.hindman@...el.com,
        jithu.joseph@...el.com, dave.hansen@...el.com, mingo@...hat.com,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        LKML <linux-kernel@...r.kernel.org>,
        David Howells <dhowells@...hat.com>,
        Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH V7 00/41] Intel(R) Resource Director Technology Cache
 Pseudo-Locking enabling

Hi Thomas,

On 6/23/2018 5:16 AM, Thomas Gleixner wrote:
> On Fri, 22 Jun 2018, Reinette Chatre wrote:
>> The Cache Pseudo-Locking enabling series that was recently merged to the
>> x86/cache branch of tip was found to conflict with the new kernfs support
>> for mounting with fs_context.
>>
>> In preparation for a conflict-free merge between the two repos some no-op
>> hooks are created within the RDT mount function being changed by
>> the two features. The goal is for this commit to be placed on a minimal
>> no-rebase branch to be consumed by both features.
> 
> Thanks for doing this so quick! I've picked up the lot and slightly
> modified the first patch by moving the stubs to the header file to get them
> completely out of the conflicting area.
> 
> The immutable branch for David to pull is:
> 
>     git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git for-vfs
> 
> I've also created a branch based on Davids mount-context branch, applied
> the cleanup patch below to it and merged the for-vfs branch on top.
> 
> David feel free to pull the result from
> 
>     git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git for-vfs-merged
> 
> or pick up the patch below and do the merge and conflict resolution yourself.
> 
> The x86/cache branch is rebased and merges cleanly with for-vfs-merged. The
> last two patches are dropped; I folded them back to the patches they fix.
> 
>     git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/cache

Thank you very much for setting up all the branches to support a smooth
merge.

> 
> Reinette, can you please verify that x86/cache + for-vfs-merged are doing
> the right thing?

Will do. While tracking down the bisect issue related to
copy_from_user() I managed to lose connectivity to my test system. I
will continue the testing when I am back in the office on Monday.

Reinette