From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Will Deacon <will@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Russell King <linux@armlinux.org.uk>,
Geert Uytterhoeven <geert@linux-m68k.org>,
linux-m68k@lists.linux-m68k.org
Subject: Re: [PATCH 0/7] Record the mm_struct in the page table pages
Date: Wed, 29 Apr 2020 03:26:24 +0300 [thread overview]
Message-ID: <20200429002624.qkhb362moj6v3vtw@box> (raw)
In-Reply-To: <20200428194449.22615-1-willy@infradead.org>
On Tue, Apr 28, 2020 at 12:44:42PM -0700, Matthew Wilcox wrote:
> From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
>
> Pages which are in use as page tables have some space unused in struct
> page. It would be handy to have a pointer to the struct mm_struct that
> they belong to so that we can handle uncorrectable errors in page tables
> more gracefully. There are a few other things we could use it for too,
> such as checking that the page table entry actually belongs to the task
> we think it ought to. This patch series does none of that, but does
> lay the groundwork for it.
>
> Matthew Wilcox (Oracle) (7):
How does it work for kernel side of virtual address space?
And your employer may be interested in semantics around
CONFIG_ARCH_WANT_HUGE_PMD_SHARE :P
--
Kirill A. Shutemov
next prev parent reply other threads:[~2020-04-29 0:26 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-28 19:44 [PATCH 0/7] Record the mm_struct in the page table pages Matthew Wilcox
2020-04-28 19:44 ` [PATCH 1/7] mm: Document x86 uses a linked list of pgds Matthew Wilcox
2020-04-28 21:41 ` Ira Weiny
2020-04-28 22:52 ` Matthew Wilcox
2020-04-29 18:29 ` Ira Weiny
2020-04-28 19:44 ` [PATCH 2/7] mm: Move pt_mm within struct page Matthew Wilcox
2020-04-29 7:34 ` Geert Uytterhoeven
2020-04-29 12:53 ` Matthew Wilcox
2020-04-28 19:44 ` [PATCH 3/7] arm: Thread mm_struct throughout page table allocation Matthew Wilcox
2020-04-28 19:44 ` [PATCH 4/7] arm64: " Matthew Wilcox
2020-04-29 9:58 ` Mark Rutland
2020-04-28 19:44 ` [PATCH 5/7] m68k: " Matthew Wilcox
2020-04-29 7:44 ` Geert Uytterhoeven
2020-04-28 19:44 ` [PATCH 6/7] mm: Set pt_mm in PTE constructor Matthew Wilcox
2020-04-29 7:46 ` Geert Uytterhoeven
2020-04-28 19:44 ` [PATCH 7/7] mm: Set pt_mm in PMD constructor Matthew Wilcox
2020-04-29 0:52 ` Kirill A. Shutemov
2020-04-29 0:26 ` Kirill A. Shutemov [this message]
2020-04-29 1:51 ` [PATCH 0/7] Record the mm_struct in the page table pages Matthew Wilcox
2020-05-24 7:42 ` Mike Rapoport
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