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From: James Morse <james.morse@arm.com>
To: Wei Xu <xuwei5@hisilicon.com>
Cc: Will Deacon <will.deacon@arm.com>,
	catalin.marinas@arm.com, suzuki.poulose@arm.com,
	dave.martin@arm.com, mark.rutland@arm.com, marc.zyngier@arm.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, Linuxarm <linuxarm@huawei.com>,
	Hanjun Guo <guohanjun@huawei.com>,
	xiexiuqi@huawei.com, huangdaode <huangdaode@hisilicon.com>,
	"Chenxin (Charles)" <charles.chenxin@huawei.com>,
	"Xiongfanggou (James)" <james.xiong@huawei.com>,
	"Liguozhu (Kenneth)" <liguozhu@hisilicon.com>,
	Zhangyi ac <zhangyi.ac@huawei.com>,
	jonathan.cameron@huawei.com,
	Shameerali Kolothum Thodi  <shameerali.kolothum.thodi@huawei.com>,
	John Garry <john.garry@huawei.com>,
	Salil Mehta <salil.mehta@huawei.com>,
	Shiju Jose <shiju.jose@huawei.com>,
	"Zhuangyuzeng (Yisen)" <yisen.zhuang@huawei.com>,
	"Wangzhou (B)" <wangzhou1@hisilicon.com>,
	"kongxinwei (A)" <kong.kongxinwei@hisilicon.com>,
	"Liyuan (Larry, Turing Solution)" <Larry.T@huawei.com>,
	libeijian@hisilicon.com
Subject: Re: KVM guest sometimes failed to boot because of kernel stack overflow if KPTI is enabled on a hisilicon ARM64 platform.
Date: Wed, 20 Jun 2018 16:54:57 +0100	[thread overview]
Message-ID: <ebfabb8f-dcd9-3fb4-3655-368a882d8f09@arm.com> (raw)
In-Reply-To: <5B2A7832.4010502@hisilicon.com>

Hi Wei,

On 20/06/18 16:52, Wei Xu wrote:
> On 2018/6/20 22:42, Will Deacon wrote:
>> Hmm, I wonder if this is at all related to RAS, since we've just enabled
>> that and if we take a fault whilst rewriting swapper then we're going to
>> get stuck. What happens if you set CONFIG_ARM64_RAS_EXTN=n in the guest?
> 
> I will try it now.

It's not just the Kconfig symbol, could you also revert:

f751daa4f9d3 ("arm64: Unconditionally enable IESB on exception entry/return for
firmware-first")


(reverts and build cleanly on 4.17)


Thanks,

James

  reply	other threads:[~2018-06-20 15:55 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-20 14:18 Wei Xu
2018-06-20 14:42 ` Will Deacon
2018-06-20 15:52   ` Wei Xu
2018-06-20 15:54     ` James Morse [this message]
2018-06-20 16:25       ` Wei Xu
2018-06-20 16:28         ` Will Deacon
2018-06-20 16:33           ` Wei Xu
2018-06-21  8:38         ` James Morse
2018-06-21  9:00           ` Marc Zyngier
2018-06-21  9:18           ` Will Deacon
2018-06-21 10:14             ` Wei Xu
2018-06-21 10:54               ` Will Deacon
2018-06-22  8:33                 ` Wei Xu
2018-06-22  9:23                   ` Will Deacon
2018-06-22 10:45                     ` Wei Xu
2018-06-22 11:16                       ` Will Deacon
2018-06-22 13:18                         ` Wei Xu
2018-06-22 13:31                           ` Will Deacon
2018-06-22 13:46                             ` Wei Xu
2018-06-22 14:43                               ` Will Deacon
2018-06-22 15:26                                 ` Wei Xu
2018-06-22 14:28                           ` Mark Rutland
2018-06-22 15:28                             ` Wei Xu
2018-06-22 15:41                               ` Will Deacon
2018-06-22 16:02                                 ` Wei Xu
2018-06-21  9:20           ` Wei Xu
2018-06-26 17:16             ` Wei Xu
2018-06-26 17:47               ` Will Deacon
2018-06-27  8:39                 ` James Morse
2018-06-27 13:26                   ` Wei Xu
2018-06-28  8:45                     ` James Morse
2018-06-28 10:20                       ` Wei Xu
2018-06-27 13:22                 ` Wei Xu
2018-06-27 13:28                   ` Will Deacon
2018-06-27 13:32                     ` Wei Xu
2018-06-28 14:50                     ` Wei Xu
2018-06-28 15:34                       ` Mark Rutland
     [not found]                         ` <etPan.5b3507f7.914aa16.1d6b@localhost>
2018-06-28 16:24                           ` 答复: " Mark Rutland
2018-06-29  9:59                             ` Mark Rutland

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