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

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Message-ID: <HK0P153MB0148ED41CE96B637019DF26ABF090@HK0P153MB0148.APCP153.PROD.OUTLOOK.COM>
Date:   Sat, 25 Jan 2020 01:44:31 +0000
From:   Dexuan Cui <decui@...rosoft.com>
To:     "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>,
        "sashal@...nel.org" <sashal@...nel.org>,
        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>
CC:     "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>
Subject: RE: [PATCH v6][RESEND] x86/hyperv: Suspend/resume the hypercall page
 for hibernation

> 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?

Thanks,
-- Dexuan