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Date: Sat, 6 Jun 2020 13:50:22 +0100
From: Catalin Marinas <catalin.marinas@....com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Joerg Roedel <joro@...tes.org>, x86@...nel.org, hpa@...or.com,
Dave Hansen <dave.hansen@...ux.intel.com>,
Andy Lutomirski <luto@...nel.org>,
Peter Zijlstra <peterz@...radead.org>, rjw@...ysocki.net,
Arnd Bergmann <arnd@...db.de>,
Steven Rostedt <rostedt@...dmis.org>,
Vlastimil Babka <vbabka@...e.cz>,
Michal Hocko <mhocko@...nel.org>,
Matthew Wilcox <willy@...radead.org>,
Joerg Roedel <jroedel@...e.de>, linux-kernel@...r.kernel.org,
linux-acpi@...r.kernel.org, linux-arch@...r.kernel.org,
linux-mm@...ck.org, Will Deacon <will@...nel.org>
Subject: Re: [PATCH v3 1/7] mm: Add functions to track page directory
modifications
On Fri, Jun 05, 2020 at 06:01:16PM -0700, Andrew Morton wrote:
> On Fri, 5 Jun 2020 12:46:55 +0100 Catalin Marinas <catalin.marinas@....com> wrote:
> > On Fri, Jun 05, 2020 at 11:08:13AM +0100, Catalin Marinas wrote:
> > > This patch causes a kernel panic on arm64 (and possibly powerpc, I
> > > haven't tried). arm64 still uses the 5level-fixup.h and pud_alloc()
> > > checks for the empty p4d with pgd_none() instead of p4d_none().
> >
> > Ah, should have checked the list first
> > (https://lore.kernel.org/linux-mm/20200604074446.23944-1-joro@8bytes.org/).
>
> Can you confirm that the merge of Mike's 5level_hack zappage has fixed
> the arm64 wontboot?
Yes, it has. Mainline is booting again on arm64.
Thanks.
--
Catalin
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