linux-kernel - RE: [PATCH v9 0/2] Support TDX guests on Hyper-V (the x86/tdx part)

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Message-ID: <SA1PR21MB133587976F510C3E816E6583BF01A@SA1PR21MB1335.namprd21.prod.outlook.com>
Date:   Thu, 27 Jul 2023 00:29:26 +0000
From:   Dexuan Cui <decui@...rosoft.com>
To:     Wei Liu <wei.liu@...nel.org>,
        "dave.hansen@...el.com" <dave.hansen@...el.com>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "bp@...en8.de" <bp@...en8.de>,
        "kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>
CC:     "ak@...ux.intel.com" <ak@...ux.intel.com>,
        "arnd@...db.de" <arnd@...db.de>,
        "brijesh.singh@....com" <brijesh.singh@....com>,
        "dan.j.williams@...el.com" <dan.j.williams@...el.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "jane.chu@...cle.com" <jane.chu@...cle.com>,
        KY Srinivasan <kys@...rosoft.com>,
        "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "luto@...nel.org" <luto@...nel.org>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "rostedt@...dmis.org" <rostedt@...dmis.org>,
        "sathyanarayanan.kuppuswamy@...ux.intel.com" 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        "seanjc@...gle.com" <seanjc@...gle.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "tony.luck@...el.com" <tony.luck@...el.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "Michael Kelley (LINUX)" <mikelley@...rosoft.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Tianyu Lan <Tianyu.Lan@...rosoft.com>,
        "rick.p.edgecombe@...el.com" <rick.p.edgecombe@...el.com>,
        "Sebastian, Shiny" <shiny.sebastian@...el.com>
Subject: RE: [PATCH v9 0/2] Support TDX guests on Hyper-V (the x86/tdx part)

> From: Dexuan Cui
> Sent: Monday, July 10, 2023 10:21 AM
> To: Dexuan Cui <decui@...rosoft.com>; Wei Liu <wei.liu@...nel.org>;
> dave.hansen@...el.com; dave.hansen@...ux.intel.com; bp@...en8.de;
> kirill.shutemov@...ux.intel.com
> Cc: ak@...ux.intel.com; arnd@...db.de; brijesh.singh@....com;
> dan.j.williams@...el.com; Haiyang Zhang <haiyangz@...rosoft.com>;
> hpa@...or.com; jane.chu@...cle.com; KY Srinivasan <kys@...rosoft.com>;
> linux-arch@...r.kernel.org; linux-hyperv@...r.kernel.org; luto@...nel.org;
> mingo@...hat.com; peterz@...radead.org; rostedt@...dmis.org;
> sathyanarayanan.kuppuswamy@...ux.intel.com; seanjc@...gle.com;
> tglx@...utronix.de; tony.luck@...el.com; x86@...nel.org; Michael Kelley
> (LINUX) <mikelley@...rosoft.com>; linux-kernel@...r.kernel.org; Tianyu Lan
> <Tianyu.Lan@...rosoft.com>; rick.p.edgecombe@...el.com
> Subject: RE: [PATCH v9 0/2] Support TDX guests on Hyper-V (the x86/tdx part)
> 
> > From: Dexuan Cui <decui@...rosoft.com>
> > Sent: Wednesday, June 28, 2023 11:45 AM
> > To: Wei Liu <wei.liu@...nel.org>
> > ...
> > > From: Wei Liu <wei.liu@...nel.org>
> > > Sent: Wednesday, June 28, 2023 11:06 AM
> > > To: Dexuan Cui <decui@...rosoft.com>
> > > Subject: Re: [PATCH v9 0/2] Support TDX guests on Hyper-V (the x86/tdx
> > > part)
> > >
> > > On Wed, Jun 21, 2023 at 12:13:15PM -0700, Dexuan Cui wrote:
> > > > The two patches are based on today's tip.git's master branch.
> > > >
> > > > Note: the two patches don't apply to the current x86/tdx branch, which
> > > > doesn't have commit 75d090fd167a ("x86/tdx: Add unaccepted
> memory
> > > support").
> > > >
> > > > As Dave suggested, I moved some local variables of tdx_map_gpa() to
> > > > inside the loop. I added Sathyanarayanan's Reviewed-by.
> > > >
> > > > Please review.
> > > > ...
> > > > Dexuan Cui (2):
> > > >   x86/tdx: Retry TDVMCALL_MAP_GPA() when needed
> > > >   x86/tdx: Support vmalloc() for tdx_enc_status_changed()
> > > ...
> > > Dexuan, do you expect these to go through the Hyper-V tree?
> > >
> > > Thanks,
> > > Wei.
> >
> > I suppose Dave and/or other x86 folks would like the 2 patches to go
> > through the tip tree if the patches look good.
> >
> > Hi Dave, any comments on the patches?
> 
> Hi Dave, would you please take a look at the 2 patches?
> 
> The patches have got Reviewed-by/Acked-by from Kirill, Sathyanarayanan
> and Michael.
> The patches can still apply cleanly on today's tip tree's master branch.
> 
> Thanks,
> Dexuan

Hi Dave, kindly ping.