From: Tianyu Lan <lantianyu1986@gmail.com>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: sashal@kernel.org, sthemmin@microsoft.com,
akpm@linux-foundation.org, Arnd Bergmann <arnd@arndb.de>,
davem@davemloft.net, devel@linuxdriverproject.org,
Joerg Roedel <joro@8bytes.org>,
the arch/x86 maintainers <x86@kernel.org>,
"linux-kernel@vger kernel org" <linux-kernel@vger.kernel.org>,
iommu@lists.linux-foundation.org, nicolas.ferre@microchip.com,
michael.h.kelley@microsoft.com, vkuznets@redhat.com,
Alex Williamson <alex.williamson@redhat.com>,
Ingo Molnar <mingo@redhat.com>,
bp@alien8.de, "H. Peter Anvin" <hpa@zytor.com>,
mchehab+samsung@kernel.org, Lan Tianyu <Tianyu.Lan@microsoft.com>,
Thomas Gleixner <tglx@linutronix.de>,
haiyangz@microsoft.com
Subject: Re: [PATCH 1/3] x86/Hyper-V: Set x2apic destination mode to physical when x2apic is available
Date: Thu, 31 Jan 2019 20:02:51 +0800 [thread overview]
Message-ID: <CAOLK0py-5AmLwEtLveFAKnM_=hnjsCL18vdAk0n6_NPPyB20bA@mail.gmail.com> (raw)
In-Reply-To: <20190131115756.GA19969@kroah.com>
Hi Greg:
Thanks for your review.
On Thu, Jan 31, 2019 at 7:57 PM Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Thu, Jan 31, 2019 at 06:17:31PM +0800, lantianyu1986@gmail.com wrote:
> > From: Lan Tianyu <Tianyu.Lan@microsoft.com>
> >
> > Hyper-V doesn't provide irq remapping for IO-APIC. To enable x2apic,
> > set x2apic destination mode to physcial mode when x2apic is available
> > and Hyper-V IOMMU driver makes sure cpus assigned with IO-APIC irqs have
> > 8-bit APIC id.
> >
> > Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
> > ---
> > arch/x86/kernel/cpu/mshyperv.c | 14 ++++++++++++++
> > 1 file changed, 14 insertions(+)
> >
> > diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
> > index e81a2db..9d62f33 100644
> > --- a/arch/x86/kernel/cpu/mshyperv.c
> > +++ b/arch/x86/kernel/cpu/mshyperv.c
> > @@ -36,6 +36,8 @@
> > struct ms_hyperv_info ms_hyperv;
> > EXPORT_SYMBOL_GPL(ms_hyperv);
> >
> > +extern int x2apic_phys;
>
> Shouldn't this be in a .h file somewhere instead?
You are right. I should use <asm/apic.h> here. Thanks.
> thanks,
>
> greg k-h
--
Best regards
Tianyu Lan
next prev parent reply other threads:[~2019-01-31 12:02 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-31 10:17 [PATCH 0/3] x86/Hyper-V/IOMMU: Add Hyper-V IOMMU driver to support x2apic mode lantianyu1986
2019-01-31 10:17 ` [PATCH 1/3] x86/Hyper-V: Set x2apic destination mode to physical when x2apic is available lantianyu1986
2019-01-31 11:57 ` Greg KH
2019-01-31 12:02 ` Tianyu Lan [this message]
2019-02-01 7:06 ` Dan Carpenter
2019-02-01 7:10 ` Tianyu Lan
2019-01-31 10:17 ` [PATCH 2/3] HYPERV/IOMMU: Add Hyper-V stub IOMMU driver lantianyu1986
2019-01-31 11:59 ` Greg KH
2019-01-31 12:08 ` Tianyu Lan
2019-01-31 14:04 ` Vitaly Kuznetsov
2019-02-01 5:45 ` Tianyu Lan
[not found] ` <1548929853-25877-3-git-send-email-Tianyu.Lan-0li6OtcxBFHby3iVrkZq2A@public.gmane.org>
2019-02-01 14:51 ` Sasha Levin
2019-02-02 6:02 ` Tianyu Lan
2019-02-01 16:34 ` Joerg Roedel
2019-02-02 2:51 ` Tianyu Lan
2019-02-01 17:00 ` Robin Murphy
2019-02-02 6:20 ` Tianyu Lan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAOLK0py-5AmLwEtLveFAKnM_=hnjsCL18vdAk0n6_NPPyB20bA@mail.gmail.com' \
--to=lantianyu1986@gmail.com \
--cc=Tianyu.Lan@microsoft.com \
--cc=akpm@linux-foundation.org \
--cc=alex.williamson@redhat.com \
--cc=arnd@arndb.de \
--cc=bp@alien8.de \
--cc=davem@davemloft.net \
--cc=devel@linuxdriverproject.org \
--cc=gregkh@linuxfoundation.org \
--cc=haiyangz@microsoft.com \
--cc=hpa@zytor.com \
--cc=iommu@lists.linux-foundation.org \
--cc=joro@8bytes.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mchehab+samsung@kernel.org \
--cc=michael.h.kelley@microsoft.com \
--cc=mingo@redhat.com \
--cc=nicolas.ferre@microchip.com \
--cc=sashal@kernel.org \
--cc=sthemmin@microsoft.com \
--cc=tglx@linutronix.de \
--cc=vkuznets@redhat.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).