linux-kernel - Re: [PATCH 4/4] Drivers: hv: vmbus: avoid unneeded compiler optimizations in vmbus_wait_for

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Message-ID: <20160215211219.GF10555@potion.brq.redhat.com>
Date:	Mon, 15 Feb 2016 22:12:20 +0100
From:	Radim Krcmar <rkrcmar@...hat.com>
To:	Vitaly Kuznetsov <vkuznets@...hat.com>
Cc:	devel@...uxdriverproject.org, linux-kernel@...r.kernel.org,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Cathy Avery <cavery@...hat.com>
Subject: Re: [PATCH 4/4] Drivers: hv: vmbus: avoid unneeded compiler
 optimizations in vmbus_wait_for_unload()

2016-02-12 16:42+0100, Vitaly Kuznetsov:
> Message header is modified by the hypervisor and we read it in a loop,
> we need to prevent compilers from optimizing accesses. There are no such
> optimizations at this moment, this is just a future proof.
> 
> Suggested-by: Radim Krcmar <rkrcmar@...hat.com>

Reviewed-by: Radim Krčmář <rkrcmar@...hat.com>

> Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>