-ker...@lists.infradead.org'
> Subject: Re: [PATCH v4] arm64: Add workaround for Fujitsu A64FX erratum
> 010001
>
> Hi Zhang,
>
> On 23/02/2019 13:06, Zhang, Lei wrote:
> > Zhang, Lei wrote:
> >> I think you mean it may be a problem to modify the KPTI trampoline
>
Hi Zhang,
On 23/02/2019 13:06, Zhang, Lei wrote:
> Zhang, Lei wrote:
>> I think you mean it may be a problem to modify the KPTI trampoline because
>> some patches about KPTI will be merged to mainline in the near future.
>> I understood that.
>> I should discuss with my colleagues whether we can
-ker...@lists.infradead.org'
>
> Subject: RE: [PATCH v4] arm64: Add workaround for Fujitsu A64FX erratum
> 010001
>
>
> I think you mean it may be a problem to modify the KPTI trampoline because
> some patches about KPTI will be merged to mainline in the near future.
> I understood
; Subject: Re: [PATCH v4] arm64: Add workaround for Fujitsu A64FX erratum 010001
> I think we should do this: never set NFDx on A64FX. I don't think we can
> maintain
> the TCR
> swivel before any memory access in the KPTI trampoline. (It already uses the
> FAR as a
> scratch re
Hi guys,
On 14/02/2019 15:56, Mark Rutland wrote:
> On Thu, Feb 14, 2019 at 07:26:24AM +, Zhang, Lei wrote:
>> On the Fujitsu-A64FX cores ver(1.0, 1.1), memory access may
>> cause an undefined fault (Data abort, DFSC=0b11).
>> This fault occurs under a specific hardware condition when a
On Thu, Feb 14, 2019 at 07:26:24AM +, Zhang, Lei wrote:
> Hi guys,
>
> Thanks for your comments.
> I am sending the revised patch, version 4, which includes a whole
> description of the patch.
>
> This patch adds a workaround for Fujitsu A64FX erratum 010001
>
> There are some discussions
Hi guys,
Thanks for your comments.
I am sending the revised patch, version 4, which includes a whole
description of the patch.
This patch adds a workaround for Fujitsu A64FX erratum 010001
There are some discussions on former versions, as follows:
[PATCH] arm64 memory accesses may cause
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