linux-kernel - Re: [PATCH v2 00/12] Drivers: hv: Add PCI pass-thru support to Hyper-V Confidential VMs

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Date:   Fri, 11 Nov 2022 16:44:52 +0000
From:   Wei Liu <wei.liu@...nel.org>
To:     Michael Kelley <mikelley@...rosoft.com>
Cc:     hpa@...or.com, kys@...rosoft.com, haiyangz@...rosoft.com,
        wei.liu@...nel.org, decui@...rosoft.com, luto@...nel.org,
        peterz@...radead.org, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, lpieralisi@...nel.org,
        robh@...nel.org, kw@...ux.com, bhelgaas@...gle.com, arnd@...db.de,
        hch@...radead.org, m.szyprowski@...sung.com, robin.murphy@....com,
        thomas.lendacky@....com, brijesh.singh@....com, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
        Tianyu.Lan@...rosoft.com, kirill.shutemov@...ux.intel.com,
        sathyanarayanan.kuppuswamy@...ux.intel.com, ak@...ux.intel.com,
        isaku.yamahata@...el.com, dan.j.williams@...el.com,
        jane.chu@...cle.com, seanjc@...gle.com, tony.luck@...el.com,
        x86@...nel.org, linux-kernel@...r.kernel.org,
        linux-hyperv@...r.kernel.org, netdev@...r.kernel.org,
        linux-pci@...r.kernel.org, linux-arch@...r.kernel.org,
        iommu@...ts.linux.dev
Subject: Re: [PATCH v2 00/12] Drivers: hv: Add PCI pass-thru support to
 Hyper-V Confidential VMs

On Thu, Nov 10, 2022 at 10:21:29PM -0800, Michael Kelley wrote:
[...]
> Patch Organization
> ==================
> Patch 1 fixes a bug in __ioremap_caller() that affects the
> existing Hyper-V code after the change to treat the vTOM bit as
> a protection flag. Fixing the bug allows the old code to continue
> to run until later patches in the series remove or update it.
> This sequencing avoids the need to enable the new approach and
> remove the old code in a single large patch.
> 
> Patch 2 handles the I/O APIC quirk by defining a new CC_ATTR enum
> member that is set only when running on Hyper-V.

I'm waiting for x86 maintainers acks on these two patches before merging
this series.

Thanks,
Wei.