From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Sudeep Holla <sudeep.holla@arm.com>
Cc: Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
kirill.shutemov@linux.intel.com,
Peter Zijlstra <peterz@infradead.org>,
hpa@zytor.com, Andrew Morton <akpm@linux-foundation.org>,
gorcunov@openvz.org, luto@amacapital.net, bp@suse.de,
open list <linux-kernel@vger.kernel.org>,
torvalds@linux-foundation.org, Will Deacon <Will.Deacon@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>
Subject: Re: [tip:x86/mm] mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y
Date: Thu, 2 Nov 2017 16:34:33 +0300 [thread overview]
Message-ID: <20171102133433.hisnvz5iwmwdzjlz@node.shutemov.name> (raw)
In-Reply-To: <CAPKp9uZSFnzyzU647PajU6L6T38J--B+80FMW_0uwfhkxoveEA@mail.gmail.com>
On Thu, Nov 02, 2017 at 12:31:54PM +0000, Sudeep Holla wrote:
> (+Will, Catalin)
>
> On Fri, Oct 20, 2017 at 1:27 PM, tip-bot for Kirill A. Shutemov
> <tipbot@zytor.com> wrote:
> > Commit-ID: 83e3c48729d9ebb7af5a31a504f3fd6aff0348c4
> > Gitweb: https://git.kernel.org/tip/83e3c48729d9ebb7af5a31a504f3fd6aff0348c4
> > Author: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> > AuthorDate: Fri, 29 Sep 2017 17:08:16 +0300
> > Committer: Ingo Molnar <mingo@kernel.org>
> > CommitDate: Fri, 20 Oct 2017 13:07:09 +0200
> >
> > mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y
> >
> > Size of the mem_section[] array depends on the size of the physical address space.
> >
> > In preparation for boot-time switching between paging modes on x86-64
> > we need to make the allocation of mem_section[] dynamic, because otherwise
> > we waste a lot of RAM: with CONFIG_NODE_SHIFT=10, mem_section[] size is 32kB
> > for 4-level paging and 2MB for 5-level paging mode.
> >
> > The patch allocates the array on the first call to sparse_memory_present_with_active_regions().
> >
>
> I am seeing a boot failure with this patch in linux-next today(20171102)
Could you share the kernel config?
Have you bisected the failure to the commit?
--
Kirill A. Shutemov
next prev parent reply other threads:[~2017-11-02 13:34 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-29 14:08 [PATCH 0/6] Boot-time switching between 4- and 5-level paging for 4.15, Part 1 Kirill A. Shutemov
2017-09-29 14:08 ` [PATCH 1/6] mm/sparsemem: Allocate mem_section at runtime for SPARSEMEM_EXTREME Kirill A. Shutemov
2017-10-20 12:27 ` [tip:x86/mm] mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y tip-bot for Kirill A. Shutemov
2017-11-02 12:31 ` Sudeep Holla
2017-11-02 13:34 ` Kirill A. Shutemov [this message]
2017-11-02 13:42 ` Sudeep Holla
2017-11-02 14:12 ` Kirill A. Shutemov
2017-11-02 15:07 ` Sudeep Holla
2017-11-02 15:37 ` Thierry Reding
2017-11-06 19:00 ` Bjorn Andersson
2017-11-07 1:15 ` Will Deacon
2017-09-29 14:08 ` [PATCH 2/6] mm/zsmalloc: Prepare to variable MAX_PHYSMEM_BITS Kirill A. Shutemov
2017-10-14 0:00 ` Nitin Gupta
2017-10-16 14:44 ` Kirill A. Shutemov
2017-10-18 23:39 ` Nitin Gupta
2017-09-29 14:08 ` [PATCH 3/6] x86/kasan: Use the same shadow offset for 4- and 5-level paging Kirill A. Shutemov
2017-10-20 12:28 ` [tip:x86/mm] " tip-bot for Andrey Ryabinin
2017-09-29 14:08 ` [PATCH 4/6] x86/xen: Provide pre-built page tables only for XEN_PV and XEN_PVH Kirill A. Shutemov
2017-10-20 12:28 ` [tip:x86/mm] x86/xen: Provide pre-built page tables only for CONFIG_XEN_PV=y and CONFIG_XEN_PVH=y tip-bot for Kirill A. Shutemov
2017-09-29 14:08 ` [PATCH 5/6] x86/xen: Drop 5-level paging support code from XEN_PV code Kirill A. Shutemov
2017-10-20 12:29 ` [tip:x86/mm] x86/xen: Drop 5-level paging support code from the " tip-bot for Kirill A. Shutemov
2017-09-29 14:08 ` [PATCH 6/6] x86/boot/compressed/64: Detect and handle 5-level paging at boot-time Kirill A. Shutemov
2017-10-03 8:27 ` [PATCH 0/6] Boot-time switching between 4- and 5-level paging for 4.15, Part 1 Kirill A. Shutemov
2017-10-17 15:42 ` Kirill A. Shutemov
2017-10-20 8:18 ` Ingo Molnar
2017-10-20 9:41 ` Kirill A. Shutemov
2017-10-20 15:23 ` Ingo Molnar
2017-10-20 16:23 ` Kirill A. Shutemov
2017-10-23 11:56 ` Ingo Molnar
2017-10-23 12:21 ` Kirill A. Shutemov
2017-10-23 12:40 ` Ingo Molnar
2017-10-23 12:48 ` Kirill A. Shutemov
2017-10-24 9:40 ` Ingo Molnar
2017-10-24 11:38 ` Kirill A. Shutemov
2017-10-24 12:47 ` Ingo Molnar
2017-10-24 13:12 ` Kirill A. Shutemov
2017-10-26 7:37 ` Ingo Molnar
2017-10-26 14:40 ` Kirill A. Shutemov
2017-10-31 9:47 ` Ingo Molnar
2017-10-31 12:04 ` Kirill A. Shutemov
2017-10-20 9:49 ` Minchan Kim
2017-10-20 12:18 ` Kirill A. Shutemov
2017-10-24 11:32 ` hpa
2017-10-24 11:43 ` Kirill A. Shutemov
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