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Date: Fri, 27 Apr 2018 13:46:19 +0200 From: "joro@...tes.org" <joro@...tes.org> To: Michal Hocko <mhocko@...nel.org> Cc: "Kani, Toshi" <toshi.kani@....com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "bp@...e.de" <bp@...e.de>, "tglx@...utronix.de" <tglx@...utronix.de>, "linux-mm@...ck.org" <linux-mm@...ck.org>, "guohanjun@...wei.com" <guohanjun@...wei.com>, "wxf.wang@...ilicon.com" <wxf.wang@...ilicon.com>, "stable@...r.kernel.org" <stable@...r.kernel.org>, "x86@...nel.org" <x86@...nel.org>, "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>, "willy@...radead.org" <willy@...radead.org>, "hpa@...or.com" <hpa@...or.com>, "catalin.marinas@....com" <catalin.marinas@....com>, "mingo@...hat.com" <mingo@...hat.com>, "will.deacon@....com" <will.deacon@....com>, "cpandya@...eaurora.org" <cpandya@...eaurora.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org> Subject: Re: [PATCH v2 2/2] x86/mm: implement free pmd/pte page interfaces On Fri, Apr 27, 2018 at 01:39:23PM +0200, Michal Hocko wrote: > On Fri 27-04-18 09:37:20, joro@...tes.org wrote: > [...] > > So until we make the generic ioremap code in lib/ioremap.c smarter about > > unmapping/remapping ranges the best solution is making my fix work again > > by reverting your patch. > > Could you reuse the same mmu_gather mechanism as we use in the > zap_*_range? Yeah, maybe, I havn't looked into the details yet. At least something similar is needed. Joerg
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