From: Marek Szyprowski <m.szyprowski@samsung.com>
To: Mike Rapoport <rppt@linux.ibm.com>
Cc: "Rich Felker" <dalias@libc.org>,
linux-ia64@vger.kernel.org,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Fenghua Yu" <fenghua.yu@intel.com>,
"Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
linux-mm@kvack.org, "Paul Mackerras" <paulus@samba.org>,
"Michael Ellerman" <mpe@ellerman.id.au>,
"Will Deacon" <will@kernel.org>,
kvmarm@lists.cs.columbia.edu, "Jonas Bonn" <jonas@southpole.se>,
"Brian Cain" <bcain@codeaurora.org>,
linux-hexagon@vger.kernel.org, linux-sh@vger.kernel.org,
"Russell King" <linux@armlinux.org.uk>,
"Ley Foon Tan" <ley.foon.tan@intel.com>,
"Catalin Marinas" <catalin.marinas@arm.com>,
uclinux-h8-devel@lists.sourceforge.jp,
linux-arch@vger.kernel.org, "Arnd Bergmann" <arnd@arndb.de>,
"Bartlomiej Zolnierkiewicz" <b.zolnierkie@samsung.com>,
"Łukasz Stelmach" <l.stelmach@samsung.com>,
kvm-ppc@vger.kernel.org,
"Stefan Kristiansson" <stefan.kristiansson@saunalahti.fi>,
openrisc@lists.librecores.org,
"Stafford Horne" <shorne@gmail.com>,
"Guan Xuetao" <gxt@pku.edu.cn>,
linux-arm-kernel@lists.infradead.org,
"Christophe Leroy" <christophe.leroy@c-s.fr>,
"Tony Luck" <tony.luck@intel.com>,
"Yoshinori Sato" <ysato@users.sourceforge.jp>,
linux-kernel@vger.kernel.org, "Marc Zyngier" <maz@kernel.org>,
nios2-dev@lists.rocketboards.org,
"Andrew Morton" <akpm@linux-foundation.org>,
linuxppc-dev@lists.ozlabs.org, "Mike Rapoport" <rppt@kernel.org>
Subject: Re: [PATCH v4 02/14] arm: add support for folded p4d page tables
Date: Fri, 8 May 2020 08:53:27 +0200 [thread overview]
Message-ID: <98229ab1-fbf8-0a89-c5d6-270c828799e7@samsung.com> (raw)
In-Reply-To: <20200507161155.GE683243@linux.ibm.com>
Hi Mike,
On 07.05.2020 18:11, Mike Rapoport wrote:
> On Thu, May 07, 2020 at 02:16:56PM +0200, Marek Szyprowski wrote:
>> On 14.04.2020 17:34, Mike Rapoport wrote:
>>> From: Mike Rapoport <rppt@linux.ibm.com>
>>>
>>> Implement primitives necessary for the 4th level folding, add walks of p4d
>>> level where appropriate, and remove __ARCH_USE_5LEVEL_HACK.
>>>
>>> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
>> Today I've noticed that kexec is broken on ARM 32bit. Bisecting between
>> current linux-next and v5.7-rc1 pointed to this commit. I've tested this
>> on Odroid XU4 and Raspberry Pi4 boards. Here is the relevant log:
>>
>> # kexec --kexec-syscall -l zImage --append "$(cat /proc/cmdline)"
>> memory_range[0]:0x40000000..0xbe9fffff
>> memory_range[0]:0x40000000..0xbe9fffff
>> # kexec -e
>> kexec_core: Starting new kernel
>> 8<--- cut here ---
>> Unable to handle kernel paging request at virtual address c010f1f4
>> pgd = c6817793
>> [c010f1f4] *pgd=4000041e(bad)
>> Internal error: Oops: 80d [#1] PREEMPT ARM
>> Modules linked in:
>> CPU: 0 PID: 1329 Comm: kexec Tainted: G W
>> 5.7.0-rc3-00127-g6cba81ed0f62 #611
>> Hardware name: Samsung Exynos (Flattened Device Tree)
>> PC is at machine_kexec+0x40/0xfc
> Any chance you have the debug info in this kernel?
> scripts/faddr2line would come handy here.
# ./scripts/faddr2line --list vmlinux machine_kexec+0x40
machine_kexec+0x40/0xf8:
machine_kexec at arch/arm/kernel/machine_kexec.c:182
177 reboot_code_buffer =
page_address(image->control_code_page);
178
179 /* Prepare parameters for reboot_code_buffer*/
180 set_kernel_text_rw();
181 kexec_start_address = image->start;
>182< kexec_indirection_page = page_list;
183 kexec_mach_type = machine_arch_type;
184 kexec_boot_atags = image->arch.kernel_r2;
185
186 /* copy our kernel relocation code to the control code
page */
187 reboot_entry = fncpy(reboot_code_buffer,
> ...
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
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next prev parent reply other threads:[~2020-05-08 6:53 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-14 15:34 [PATCH v4 00/14] mm: remove __ARCH_HAS_5LEVEL_HACK Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 01/14] h8300: remove usage of __ARCH_USE_5LEVEL_HACK Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 02/14] arm: add support for folded p4d page tables Mike Rapoport
[not found] ` <CGME20200507121658eucas1p240cf4a3e0fe5c22dda5ec4f72734149f@eucas1p2.samsung.com>
2020-05-07 12:16 ` Marek Szyprowski
2020-05-07 16:11 ` Mike Rapoport
2020-05-08 6:53 ` Marek Szyprowski [this message]
2020-05-08 17:42 ` Mike Rapoport
2020-05-11 6:36 ` Marek Szyprowski
2020-05-11 14:15 ` Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 03/14] arm64: " Mike Rapoport
2020-05-15 18:40 ` Andrew Morton
2020-05-16 17:20 ` Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 04/14] hexagon: remove __ARCH_USE_5LEVEL_HACK Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 05/14] ia64: add support for folded p4d page tables Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 06/14] nios2: " Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 07/14] openrisc: " Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 08/14] powerpc: " Mike Rapoport
2020-06-03 19:05 ` Andrew Morton
2020-06-04 9:50 ` Qian Cai
2020-04-14 15:34 ` [PATCH v4 09/14] sh: fault: Modernize printing of kernel messages Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 10/14] sh: drop __pXd_offset() macros that duplicate pXd_index() ones Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 11/14] sh: add support for folded p4d page tables Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 12/14] unicore32: remove __ARCH_USE_5LEVEL_HACK Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 13/14] asm-generic: remove pgtable-nop4d-hack.h Mike Rapoport
2020-04-14 15:34 ` [PATCH v4 14/14] mm: remove __ARCH_HAS_5LEVEL_HACK and include/asm-generic/5level-fixup.h Mike Rapoport
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