From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Guenter Roeck <linux@roeck-us.net>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org, dja@axtens.net
Subject: Re: [PATCH v5 17/17] powerpc/32s: Enable CONFIG_VMAP_STACK
Date: Fri, 7 Feb 2020 13:29:48 +0000 [thread overview]
Message-ID: <29bd8702-9b8f-6931-2bbc-db7e444907d5@c-s.fr> (raw)
In-Reply-To: <551bad84-3e80-265b-93ab-25eae4aa9807@roeck-us.net>
On 02/07/2020 01:08 PM, Guenter Roeck wrote:
> On 2/7/20 12:28 AM, Christophe Leroy wrote:
>>
>>
>> On 02/07/2020 06:13 AM, Christophe Leroy wrote:
>>>
>>>
>>> Le 06/02/2020 à 21:31, Guenter Roeck a écrit :
>>>> On Sat, Dec 21, 2019 at 08:32:38AM +0000, Christophe Leroy wrote:
>>>>> A few changes to retrieve DAR and DSISR from struct regs
>>>>> instead of retrieving them directly, as they may have
>>>>> changed due to a TLB miss.
>>>>>
>>>>> Also modifies hash_page() and friends to work with virtual
>>>>> data addresses instead of physical ones. Same on load_up_fpu()
>>>>> and load_up_altivec().
>>>>>
>>>>> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
>>>>
>>>> This patch results in qemu boot failures (mac99 with pmac32_defconfig).
>>>> Images fail silently; there is no console output. Reverting the patch
>>>> fixes the problem. Bisect log is attached below.
>>>>
>>>> Assuming this was tested on real hardware, am I correct to assume
>>>> that qemu
>>>> for ppc32 (more specifically, qemu's mac99 and g3beige machines) no
>>>> longer
>>>> works with the upstream kernel ?
>>>
>>> Before submitting the series, I successfully tested:
>>> - Real HW with powerpc 8xx
>>> - Real HW with powerpc 832x
>>> - Qemu's mac99
>>>
>>> I'll re-check the upstream kernel.
>>>
>>
>> This is still working for me with the upstream kernel:
>>
>
> Interesting. What is your kernel configuration, your qemu version, and
> your qemu command line ?
Config is pmac32_defconfig + CONFIG_DEVTMPFS (But kernel also boots
without CONFIG_DEVTMPFS)
QEMU emulator version 2.11.2
qemu-system-ppc -kernel vmlinux -M mac99 -initrd rootfs.cpio.gz -s -m 1024
Works with both GCC 5.5 and GCC 8.1
Christophe
next prev parent reply other threads:[~2020-02-07 13:29 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-21 8:32 [PATCH v5 00/17] Enable CONFIG_VMAP_STACK on PPC32 Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 01/17] powerpc/32: replace MTMSRD() by mtmsr Christophe Leroy
2020-01-29 5:17 ` Michael Ellerman
2019-12-21 8:32 ` [PATCH v5 02/17] powerpc/32: Add EXCEPTION_PROLOG_0 in head_32.h Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 03/17] powerpc/32: save DEAR/DAR before calling handle_page_fault Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 04/17] powerpc/32: move MSR_PR test into EXCEPTION_PROLOG_0 Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 05/17] powerpc/32: add a macro to get and/or save DAR and DSISR on stack Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 06/17] powerpc/32: prepare for CONFIG_VMAP_STACK Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 07/17] powerpc: align stack to 2 * THREAD_SIZE with VMAP_STACK Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 08/17] powerpc/32: Add early stack overflow detection with VMAP stack Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 09/17] powerpc/32: Use vmapped stacks for interrupts Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 10/17] powerpc/8xx: Use alternative scratch registers in DTLB miss handler Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 11/17] powerpc/8xx: drop exception entries for non-existing exceptions Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 12/17] powerpc/8xx: move DataStoreTLBMiss perf handler Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 13/17] powerpc/8xx: split breakpoint exception Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 14/17] powerpc/8xx: Enable CONFIG_VMAP_STACK Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 15/17] powerpc/32s: reorganise DSI handler Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 16/17] powerpc/32s: avoid crossing page boundary while changing SRR0/1 Christophe Leroy
2019-12-21 8:32 ` [PATCH v5 17/17] powerpc/32s: Enable CONFIG_VMAP_STACK Christophe Leroy
2020-01-18 12:46 ` Michael Ellerman
2020-02-06 20:31 ` Guenter Roeck
2020-02-07 6:13 ` Christophe Leroy
2020-02-07 8:28 ` Christophe Leroy
2020-02-07 13:08 ` Guenter Roeck
2020-02-07 13:29 ` Christophe Leroy [this message]
2020-02-07 13:44 ` Guenter Roeck
2020-02-07 17:16 ` Christophe Leroy
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