> From: linux-hyperv-owner@xxxxxxxxxxxxxxx > <linux-hyperv-owner@xxxxxxxxxxxxxxx> On Behalf Of Sasha Levin > Sent: Wednesday, January 29, 2020 4:06 PM > To: Dexuan Cui <decui@xxxxxxxxxxxxx> > Cc: arnd@xxxxxxxx; bp@xxxxxxxxx; daniel.lezcano@xxxxxxxxxx; Haiyang Zhang > <haiyangz@xxxxxxxxxxxxx>; hpa@xxxxxxxxx; KY Srinivasan > <kys@xxxxxxxxxxxxx>; linux-hyperv@xxxxxxxxxxxxxxx; > linux-kernel@xxxxxxxxxxxxxxx; mingo@xxxxxxxxxx; Stephen Hemminger > <sthemmin@xxxxxxxxxxxxx>; tglx@xxxxxxxxxxxxx; x86@xxxxxxxxxx; Michael > Kelley <mikelley@xxxxxxxxxxxxx>; Sasha Levin > <Alexander.Levin@xxxxxxxxxxxxx>; vkuznets <vkuznets@xxxxxxxxxx>; > linux-arch@xxxxxxxxxxxxxxx > 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@xxxxxxxxxxxxx> > >> 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@xxxxxxxxxxxxx> > >> Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx> > >> --- > >> > >> 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 This straightforward patch is the only pending patch for v5.6 for the hibernation functionality of Linux VM on Hyper-V. It would be really great if we could merge it for v5.6-rc1. The patch is safe in that it only runs when the VM hibernates, and the hibernation functionality of Linux VM on Hyper-V never worked before. I'm pretty sure the patch can not cause any merge conflict since nobody else tries to modify the file recently. Thanks, -- Dexuan
