[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <6cbf5b1e-93a5-c308-59ee-257676912d24@windriver.com>
Date: Wed, 22 Jul 2020 11:17:27 +0800
From: Jun Miao <jun.miao@...driver.com>
To: Lu Baolu <baolu.lu@...ux.intel.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
"stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: Re: Subject: Re: [PATCH 1/1] iommu/vt-d: Skip TE disabling on quirky
gfx dedicated iommu
On 7/22/20 11:07 AM, Lu Baolu wrote:
> On 7/22/20 11:03 AM, Jun Miao wrote:
>> On 7/22/20 10:40 AM, Lu Baolu wrote:
>>> Hi Jun,
>>>
>>> On 7/22/20 10:26 AM, Miao, Jun wrote:
>>>>>> Kernel panic - not syncing: DMAR hardware is malfunctioning
>>>>>> CPU: 0 PID: 347 Comm: rtcwake Not tainted 5.4.0-yocto-standard #124
>>>>>> Hardware name: Intel Corporation Ice Lake Client Platform/IceLake
>>>>>> U DDR4
>>>>>> SODIMM PD RVP TLC, BIOS ICLSFWR1.R00.3162.A00.1904162000 04/16/2019
>>>>>> Call Trace:
>>>>>> dump_stack+0x59/0x75
>>>>>> panic+0xff/0x2d4
>>>>>> iommu_disable_translation+0x88/0x90
>>>>>> iommu_suspend+0x12f/0x1b0
>>>>>> syscore_suspend+0x6c/0x220
>>>>>> suspend_devices_and_enter+0x313/0x840
>>>>>> pm_suspend+0x30d/0x390
>>>>>> state_store+0x82/0xf0
>>>>>> kobj_attr_store+0x12/0x20
>>>>>> sysfs_kf_write+0x3c/0x50
>>>>>> kernfs_fop_write+0x11d/0x190
>>>>>> __vfs_write+0x1b/0x40
>>>>>> vfs_write+0xc6/0x1d0
>>>>>> ksys_write+0x5e/0xe0
>>>>>> __x64_sys_write+0x1a/0x20
>>>>>> do_syscall_64+0x4d/0x150
>>>>>> entry_SYSCALL_64_after_hwframe+0x44/0xa9
>>>>>> RIP: 0033:0x7f97b8080113
>>>>>> Code: 8b 15 81 bd 0c 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7
>>>>>> 0f 1f 00
>>>>>> 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d
>>>>>> 00 f0 ff ff
>>>>>> 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18
>>>>>> RSP: 002b:00007ffcfa6f48b8 EFLAGS: 00000246 ORIG_RAX:
>>>>>> 0000000000000001
>>>>>> RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f97b8080113
>>>>>> RDX: 0000000000000004 RSI: 000055e7db03b700 RDI: 0000000000000004
>>>>>> RBP: 000055e7db03b700 R08: 000055e7db03b700 R09: 0000000000000004
>>>>>> R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004
>>>>>> R13: 000055e7db039380 R14: 0000000000000004 R15: 00007f97b814d700
>>>>>> Kernel Offset: 0x38a00000 from 0xffffffff81000000 (relocation range:
>>>>>> 0xffffffff80000000-0xffffffffbfffffff)
>>>>>> ---[ end Kernel panic - not syncing: DMAR hardware is
>>>>>> malfunctioning ]---
>>>>
>>>
>>> Do you mean that system hangs in iommu_disable_translation() without
>>> this fix.
>>>
>> Yes ,From the call trace and i also read the DMARD_GCMD_RGS is wrong
>> without this patch.
>
> Okay! Thanks a lot for confirming this.
>
> Best regards,
> baolu
>
>>>> [S3 successfully with the patch]
>>>
>>> And, this failure disappeared after you applied this fix?
YES , the log is too long , only head and tail . this failure
disappereared.
>>>
>>> Best regards,
>>> baolu
Powered by blists - more mailing lists