linux-kernel - Re: [PATCH 03/10] x86/hyper-v: make hv_do

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Message-ID: <20170717152155.GA24572@kroah.com>
Date:   Mon, 17 Jul 2017 17:21:55 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     kys@...rosoft.com
Cc:     linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
        olaf@...fle.de, apw@...onical.com, vkuznets@...hat.com,
        jasowang@...hat.com, leann.ogasawara@...onical.com,
        marcelo.cerri@...onical.com, sthemmin@...rosoft.com
Subject: Re: [PATCH 03/10] x86/hyper-v: make hv_do_hypercall() inline

On Sun, Jun 25, 2017 at 10:06:42AM -0700, kys@...hange.microsoft.com wrote:
> From: Vitaly Kuznetsov <vkuznets@...hat.com>
> 
> We have only three call sites for hv_do_hypercall() and we're going to
> change HVCALL_SIGNAL_EVENT to doing fast hypercall so we can inline this
> function for optimization.
> 
> Hyper-V top level functional specification states that r9-r11 registers
> and flags may be clobbered by the hypervisor during hypercall and with
> inlining this is somewhat important, add the clobbers.
> 
> Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
> Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
> Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>

This patch breaks the build, so can you please rebase and resend this,
and the rest of this series, if you wish to have it applied?

thanks,

greg k-h