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Message-ID: <20200204021322.GH83200@debian-boqun.qqnc3lrjykvubdpftowmye0fmh.lx.internal.cloudapp.net>
Date:   Tue, 4 Feb 2020 10:13:22 +0800
From:   Boqun Feng <boqun.feng@...il.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-pci@...r.kernel.org, linux-hyperv@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Michael Kelley <mikelley@...rosoft.com>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Sasha Levin <sashal@...nel.org>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Andrew Murray <andrew.murray@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH v2 3/3] PCI: hv: Introduce hv_msi_entry

On Mon, Feb 03, 2020 at 03:41:52PM +0100, Thomas Gleixner wrote:
> Boqun Feng <boqun.feng@...il.com> writes:
> >  /*
> > diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
> > index 6b79515abb82..3bdaa3b6e68f 100644
> > --- a/arch/x86/include/asm/mshyperv.h
> > +++ b/arch/x86/include/asm/mshyperv.h
> > @@ -240,6 +240,11 @@ bool hv_vcpu_is_preempted(int vcpu);
> >  static inline void hv_apic_init(void) {}
> >  #endif
> >  
> > +#define hv_set_msi_address_from_desc(msi_entry, msi_desc)	\
> > +do {								\
> > +	(msi_entry)->address = (msi_desc)->msg.address_lo;	\
> > +} while (0)
> 
> Any reason why this needs to be a macro? inlines are preferrred. They

Making it an inline function will require #include <linux/msi.h> in
mshyperv.h, which I was trying to avoid. But now it seems pointless. I
will make it an inline in next version.

Regards,
Boqun

> are typesafe and readable.
> 
> Thanks,
> 
>         tglx

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