Hi Wei,
On 14/01/2021 00:18, Wei Chen wrote:
I think
if we introduce an empty helper for Arm32, we can reduce the other
chunk inside get_cycles. In addition, if we need to do the same work
for Arm32 in the future, we may not need to modify get_cycles.
I don't really follow this. I wasn't asking
vel@lists.xenproject.org;
> >> sstabell...@kernel.org
> >> Cc: Bertrand Marquis ; Penny Zheng
> >> ; Jiamei Xie ; nd
> >>
> >> Subject: Re: [PATCH v2 2/2] xen/arm: Add defensive barrier in get_cycles
> >> for
> >> Arm64
> >>
>
On 09/01/2021 12:16, Wei Chen wrote:
HI Julien,
Hi Wei,
-Original Message-
From: Julien Grall
Sent: 2021年1月8日 19:56
To: Wei Chen ; xen-devel@lists.xenproject.org;
sstabell...@kernel.org
Cc: Bertrand Marquis ; Penny Zheng
; Jiamei Xie ; nd
Subject: Re: [PATCH v2 2/2] xen/arm: Add
HI Julien,
> -Original Message-
> From: Julien Grall
> Sent: 2021年1月8日 19:56
> To: Wei Chen ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org
> Cc: Bertrand Marquis ; Penny Zheng
> ; Jiamei Xie ; nd
>
> Subject: Re: [PATCH v2 2/2] xen/arm: Add defe
Hi Wei,
On 08/01/2021 06:21, Wei Chen wrote:
Per the discussion [1] on the mailing list, we'd better to
have a barrier after reading CNTPCT in get_cycles. If there
is not any barrier there. When get_cycles being used in some
seqlock critical context in the future, the seqlock can be
speculated p
