From: Wei Liu <wei.liu2@citrix.com>
To: Tamas K Lengyel <tamas.lengyel@zentific.com>
Cc: xen-devel@lists.xenproject.org,
Julien Grall <julien.grall@arm.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Ian Jackson <ian.jackson@eu.citrix.com>,
Wei Liu <wei.liu2@citrix.com>
Subject: Re: [PATCH v2] xen/arm: flush icache as well when XEN_DOMCTL_cacheflush is issued
Date: Fri, 27 Jan 2017 17:09:56 +0000 [thread overview]
Message-ID: <20170127170955.herfcegv7h62mist@citrix.com> (raw)
In-Reply-To: <20170127164545.6945-1-tamas.lengyel@zentific.com>
On Fri, Jan 27, 2017 at 09:45:45AM -0700, Tamas K Lengyel wrote:
> When the toolstack modifies memory of a running ARM VM it may happen
> that the underlying memory of a current vCPU PC is changed. Without
> flushing the icache the vCPU may continue executing stale instructions.
>
> In this patch we introduce VA-based icache flushing macros. Also expose
> the xc_domain_cacheflush through xenctrl.h.
>
> Signed-off-by: Tamas K Lengyel <tamas.lengyel@zentific.com>
> ---
> Cc: Ian Jackson <ian.jackson@eu.citrix.com>
> Cc: Wei Liu <wei.liu2@citrix.com>
> Cc: Stefano Stabellini <sstabellini@kernel.org>
> Cc: Julien Grall <julien.grall@arm.com>
>
> Note: patch has been verified to solve stale icache issues on the
> HiKey platform.
>
> v2: Return 0 on x86 and clarify comment in xenctrl.h
> ---
> tools/libxc/include/xenctrl.h | 8 ++++++++
> tools/libxc/xc_domain.c | 6 +++---
> tools/libxc/xc_private.h | 3 ---
Acked-by: Wei Liu <wei.liu2@citrix.com>
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next prev parent reply other threads:[~2017-01-27 17:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-27 16:45 [PATCH v2] xen/arm: flush icache as well when XEN_DOMCTL_cacheflush is issued Tamas K Lengyel
2017-01-27 17:09 ` Wei Liu [this message]
2017-01-27 17:25 ` Julien Grall
2017-01-27 18:04 ` Tamas K Lengyel
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