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Date:   Thu, 13 Feb 2020 15:14:07 +0800
From:   Boqun Feng <boqun.feng@gmail.com>
To:     Dexuan Cui <decui@microsoft.com>
Cc:     "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
        "linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        Michael Kelley <mikelley@microsoft.com>,
        KY Srinivasan <kys@microsoft.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        Stephen Hemminger <sthemmin@microsoft.com>,
        Sasha Levin <sashal@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>,
        "x86@kernel.org" <x86@kernel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Andrew Murray <andrew.murray@arm.com>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Andrew Murray <amurray@thegoodpenguin.co.uk>
Subject: Re: [PATCH v3 3/3] PCI: hv: Introduce hv_msi_entry
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 <20200210033953.99692-4-boqun.feng@gmail.com>
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On Thu, Feb 13, 2020 at 04:18:01AM +0000, Dexuan Cui wrote:
> > From: linux-hyperv-owner@vger.kernel.org
> > <linux-hyperv-owner@vger.kernel.org> On Behalf Of Boqun Feng
> > diff --git a/arch/x86/include/asm/hyperv-tlfs.h
> > b/arch/x86/include/asm/hyperv-tlfs.h
> > 
> > +union hv_msi_entry {
> > +	u64 as_uint64;
> > +	struct {
> > +		u32 address;
> > +		u32 data;
> > +	} __packed;
> > +};
> 
> Just a small thing: should we move the __packed to after the "}" of
> the union hv_msi_entry ?
> 

Actually, in TLFS header, it's common to put the "__packed" inside the
union, rather than after the union. It makes sense because union is
different than struct: the alignment requirement of a union is already
decided by the "as_*" member, so no need for "__packed" attribute.

> Reviewed-by: Dexuan Cui <decui@microsoft.com>

Thanks!

Regards,
Boqun