linux-kernel - Re: [PATCH v6][RESEND] x86/hyperv: Suspend/resume the hypercall page for hibernation

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Message-ID: <20200130000552.GD2896@sasha-vm>
Date:   Wed, 29 Jan 2020 19:05:52 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     Dexuan Cui <decui@...rosoft.com>
Cc:     "arnd@...db.de" <arnd@...db.de>, "bp@...en8.de" <bp@...en8.de>,
        "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        "hpa@...or.com" <hpa@...or.com>, KY Srinivasan <kys@...rosoft.com>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "mingo@...hat.com" <mingo@...hat.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "x86@...nel.org" <x86@...nel.org>,
        Michael Kelley <mikelley@...rosoft.com>,
        Sasha Levin <Alexander.Levin@...rosoft.com>,
        vkuznets <vkuznets@...hat.com>,
        "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>
Subject: Re: [PATCH v6][RESEND] x86/hyperv: Suspend/resume the hypercall page
 for hibernation

On Sat, Jan 25, 2020 at 01:44:31AM +0000, Dexuan Cui wrote:
>> From: Dexuan Cui <decui@...rosoft.com>
>> Sent: Monday, January 6, 2020 2:43 PM
>>
>> This is needed for hibernation, e.g. when we resume the old kernel, we need
>> to disable the "current" kernel's hypercall page and then resume the old
>> kernel's.
>>
>> Signed-off-by: Dexuan Cui <decui@...rosoft.com>
>> Reviewed-by: Michael Kelley <mikelley@...rosoft.com>
>> ---
>>
>> This is a RESEND of https://lkml.org/lkml/2019/11/20/68
>>
>> Please review.
>>
>> If it looks good, can you please pick it up through the tip.git tree?
>>
>>  arch/x86/hyperv/hv_init.c | 48
>> +++++++++++++++++++++++++++++++++++++++
>>  1 file changed, 48 insertions(+)
>
>Hi, Vitaly and x86 maintainers,
>Can you please take a look at this patch?

Ping?

This patch has been floating around in it's current form for the past 2
months. I'll happily take Hyper-V patches under arch/x86/hyperv/ via the
Hyper-V tree rather than tip if the x86 folks don't want to deal with
them.

-- 
Thanks,
Sasha