linux-kernel - Re: [PATCH v1 0/4] Fix issues with huge mapping in ioremap

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Message-ID: <1521038277.2693.131.camel@hpe.com>
Date:   Wed, 14 Mar 2018 14:38:00 +0000
From:   "Kani, Toshi" <toshi.kani@....com>
To:     "cpandya@...eaurora.org" <cpandya@...eaurora.org>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "will.deacon@....com" <will.deacon@....com>,
        "arnd@...db.de" <arnd@...db.de>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "ard.biesheuvel@...aro.org" <ard.biesheuvel@...aro.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "takahiro.akashi@...aro.org" <takahiro.akashi@...aro.org>,
        "james.morse@....com" <james.morse@....com>,
        "kristina.martsenko@....com" <kristina.martsenko@....com>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "marc.zyngier@....com" <marc.zyngier@....com>,
        "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>
Subject: Re: [PATCH v1 0/4] Fix issues with huge mapping in ioremap

On Wed, 2018-03-14 at 14:18 +0530, Chintan Pandya wrote:
> Note: I was working on these patches for quite sometime
> and realized that Toshi Kani has shared some patches
> addressing the same isssue with subject
> "[PATCH 0/2] fix memory leak / panic in ioremap huge pages".
> I've taken slightly different approach here, so sending
> to the list, finally.

Hi Chintan,

Do you have any issue in my patchset?  If so, can you please comment on
them?  It complicates the thing when you send a different approach
without telling why a different approach is needed.  Your approach
purges TLB after updating pmd/pud, which I think is broken.  Can you
work on top of my patchset and properly implement pXd_free_pte_page()
for arm64?  I will send out my v2 today.
  
Thanks,
-Toshi