From:   "Michael Kelley (LINUX)" <mikelley@microsoft.com>
To:     Borislav Petkov <bp@alien8.de>,
        "dave.hansen@linux.intel.com" <dave.hansen@linux.intel.com>
CC:     "hpa@zytor.com" <hpa@zytor.com>, KY Srinivasan <kys@microsoft.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        "wei.liu@kernel.org" <wei.liu@kernel.org>,
        Dexuan Cui <decui@microsoft.com>,
        "luto@kernel.org" <luto@kernel.org>,
        "peterz@infradead.org" <peterz@infradead.org>,
        "davem@davemloft.net" <davem@davemloft.net>,
        "edumazet@google.com" <edumazet@google.com>,
        "kuba@kernel.org" <kuba@kernel.org>,
        "pabeni@redhat.com" <pabeni@redhat.com>,
        "lpieralisi@kernel.org" <lpieralisi@kernel.org>,
        "robh@kernel.org" <robh@kernel.org>, "kw@linux.com" <kw@linux.com>,
        "bhelgaas@google.com" <bhelgaas@google.com>,
        "arnd@arndb.de" <arnd@arndb.de>, "hch@lst.de" <hch@lst.de>,
        "m.szyprowski@samsung.com" <m.szyprowski@samsung.com>,
        "robin.murphy@arm.com" <robin.murphy@arm.com>,
        "thomas.lendacky@amd.com" <thomas.lendacky@amd.com>,
        "brijesh.singh@amd.com" <brijesh.singh@amd.com>,
        "tglx@linutronix.de" <tglx@linutronix.de>,
        "mingo@redhat.com" <mingo@redhat.com>,
        Tianyu Lan <Tianyu.Lan@microsoft.com>,
        "kirill.shutemov@linux.intel.com" <kirill.shutemov@linux.intel.com>,
        "sathyanarayanan.kuppuswamy@linux.intel.com" 
        <sathyanarayanan.kuppuswamy@linux.intel.com>,
        "ak@linux.intel.com" <ak@linux.intel.com>,
        "isaku.yamahata@intel.com" <isaku.yamahata@intel.com>,
        "dan.j.williams@intel.com" <dan.j.williams@intel.com>,
        "jane.chu@oracle.com" <jane.chu@oracle.com>,
        "seanjc@google.com" <seanjc@google.com>,
        "tony.luck@intel.com" <tony.luck@intel.com>,
        "x86@kernel.org" <x86@kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
        "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
        "iommu@lists.linux.dev" <iommu@lists.linux.dev>
Subject: RE: [PATCH v5 06/14] x86/ioremap: Support hypervisor specified range
 to map as encrypted
Thread-Topic: [PATCH v5 06/14] x86/ioremap: Support hypervisor specified range
 to map as encrypted
Thread-Index: AQHZJs7d1RPl+inmE0Kn2DbFJZ3EJa6nyiwAgAAUafCAB237AIAL8mwQgAhWY4CAAGgMUIAACvuAgAACa5CAAAOQgIAAR90Q
Date:   Wed, 8 Feb 2023 00:18:38 +0000
Message-ID: <BYAPR21MB16880F67072368255CBD815AD7D89@BYAPR21MB1688.namprd21.prod.outlook.com>
References: <1673559753-94403-1-git-send-email-mikelley@microsoft.com>
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From: Borislav Petkov <bp@alien8.de> Sent: Tuesday, February 7, 2023 11:55 =
AM
>=20
> On Tue, Feb 07, 2023 at 07:48:06PM +0000, Michael Kelley (LINUX) wrote:
> > From: Borislav Petkov <bp@alien8.de> Sent: Tuesday, February 7, 2023 11=
:33 AM
> > >
> > > On Tue, Feb 07, 2023 at 07:01:25PM +0000, Michael Kelley (LINUX) wrot=
e:
> > > > Unless there are objections, I'll go with CC_ATTR_PARAVISOR_DEVICES=
,
> > >
> > > What does "DEVICES" mean in this context?
> > >
> > > You need to think about !virt people too who are already confused by =
the
> > > word "paravisor". :-)
> > >
> >
> > Maybe I misunderstood your previous comment about "Either 1".   We can
> > avoid "PARAVISOR" entirely by going with two attributes:
>=20
> No, I'm fine with CC_ATTR_PARAVISOR. Why would you have to have
> CC_ATTR_PARAVISOR_DEVICES? I.e., the string "_DEVICES" appended after
> "PARAVISOR". Isn't CC_ATTR_PARAVISOR enough?
>=20

Dave --

In v2 of this patch series, you had concerns about CC_ATTR_PARAVISOR being =
too
generic. [1]   After some back-and-forth discussion in this thread, Boris i=
s back to
preferring it.   Can you live with CC_ATTR_PARAVISOR?  Just trying to reach
consensus ...=20

Michael

[1]   https://lore.kernel.org/linux-hyperv/Y258BO8ohVtVZvSH@liuwe-devbox-de=
bian-v2/T/#m593853d8094453ad3f1a5552dad995ccc6c019b2