From: Juergen Gross <jgross@suse.com>
To: Joerg Roedel <joro@8bytes.org>, Dave Hansen <dave.hansen@intel.com>
Cc: Tianyu Lan <ltykernel@gmail.com>,
kys@microsoft.com, haiyangz@microsoft.com,
sthemmin@microsoft.com, wei.liu@kernel.org, decui@microsoft.com,
tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
x86@kernel.org, hpa@zytor.com, dave.hansen@linux.intel.com,
luto@kernel.org, peterz@infradead.org, konrad.wilk@oracle.com,
boris.ostrovsky@oracle.com, sstabellini@kernel.org,
will@kernel.org, davem@davemloft.net, kuba@kernel.org,
jejb@linux.ibm.com, martin.petersen@oracle.com, arnd@arndb.de,
hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com,
thomas.lendacky@amd.com, brijesh.singh@amd.com, ardb@kernel.org,
Tianyu.Lan@microsoft.com, rientjes@google.com,
martin.b.radev@gmail.com, akpm@linux-foundation.org,
rppt@kernel.org, kirill.shutemov@linux.intel.com,
aneesh.kumar@linux.ibm.com, krish.sadhukhan@oracle.com,
saravanand@fb.com, xen-devel@lists.xenproject.org,
pgonda@google.com, david@redhat.com, keescook@chromium.org,
hannes@cmpxchg.org, sfr@canb.auug.org.au,
michael.h.kelley@microsoft.com, iommu@lists.linux-foundation.org,
linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
netdev@vger.kernel.org, vkuznets@redhat.com,
anparri@microsoft.com
Subject: Re: [PATCH 03/13] x86/HV: Add new hvcall guest address host visibility support
Date: Mon, 2 Aug 2021 15:11:40 +0200 [thread overview]
Message-ID: <5badc0cb-3038-2eff-a4bf-022ce8fc51d7@suse.com> (raw)
In-Reply-To: <YQfepYTC4n6agq9z@8bytes.org>
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On 02.08.21 14:01, Joerg Roedel wrote:
> On Wed, Jul 28, 2021 at 08:29:41AM -0700, Dave Hansen wrote:
>> __set_memory_enc_dec() is turning into a real mess. SEV, TDX and now
>> Hyper-V are messing around in here.
>
> I was going to suggest a PV_OPS call where the fitting implementation
> for the guest environment can be plugged in at boot. There is TDX and an
> SEV(-SNP) case, a Hyper-V case, and likely more coming up from other
> cloud/hypervisor vendors. Hiding all these behind feature checks is not
> going to make things cleaner.
As those cases are all mutually exclusive, wouldn't a static_call() be
the appropriate solution?
Juergen
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WARNING: multiple messages have this Message-ID (diff)
From: Juergen Gross via iommu <iommu@lists.linux-foundation.org>
To: Joerg Roedel <joro@8bytes.org>, Dave Hansen <dave.hansen@intel.com>
Cc: linux-hyperv@vger.kernel.org, brijesh.singh@amd.com,
david@redhat.com, peterz@infradead.org,
dave.hansen@linux.intel.com, vkuznets@redhat.com, hpa@zytor.com,
anparri@microsoft.com, kys@microsoft.com, will@kernel.org,
boris.ostrovsky@oracle.com, linux-arch@vger.kernel.org,
sfr@canb.auug.org.au, wei.liu@kernel.org, sstabellini@kernel.org,
sthemmin@microsoft.com, xen-devel@lists.xenproject.org,
linux-scsi@vger.kernel.org, aneesh.kumar@linux.ibm.com,
x86@kernel.org, decui@microsoft.com,
Tianyu Lan <ltykernel@gmail.com>,
hch@lst.de, michael.h.kelley@microsoft.com, mingo@redhat.com,
pgonda@google.com, rientjes@google.com, kuba@kernel.org,
jejb@linux.ibm.com, martin.b.radev@gmail.com,
thomas.lendacky@amd.com, Tianyu.Lan@microsoft.com,
keescook@chromium.org, arnd@arndb.de, konrad.wilk@oracle.com,
haiyangz@microsoft.com, bp@alien8.de, luto@kernel.org,
krish.sadhukhan@oracle.com, tglx@linutronix.de,
akpm@linux-foundation.org, martin.petersen@oracle.com,
saravanand@fb.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
kirill.shutemov@linux.intel.com, hannes@cmpxchg.org,
ardb@kernel.org, robin.murphy@arm.com, davem@davemloft.net,
rppt@kernel.org
Subject: Re: [PATCH 03/13] x86/HV: Add new hvcall guest address host visibility support
Date: Mon, 2 Aug 2021 15:11:40 +0200 [thread overview]
Message-ID: <5badc0cb-3038-2eff-a4bf-022ce8fc51d7@suse.com> (raw)
In-Reply-To: <YQfepYTC4n6agq9z@8bytes.org>
[-- Attachment #1.1.1.1: Type: text/plain, Size: 665 bytes --]
On 02.08.21 14:01, Joerg Roedel wrote:
> On Wed, Jul 28, 2021 at 08:29:41AM -0700, Dave Hansen wrote:
>> __set_memory_enc_dec() is turning into a real mess. SEV, TDX and now
>> Hyper-V are messing around in here.
>
> I was going to suggest a PV_OPS call where the fitting implementation
> for the guest environment can be plugged in at boot. There is TDX and an
> SEV(-SNP) case, a Hyper-V case, and likely more coming up from other
> cloud/hypervisor vendors. Hiding all these behind feature checks is not
> going to make things cleaner.
As those cases are all mutually exclusive, wouldn't a static_call() be
the appropriate solution?
Juergen
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next prev parent reply other threads:[~2021-08-02 13:11 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-28 14:52 [PATCH 00/13] x86/Hyper-V: Add Hyper-V Isolation VM support Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 01/13] x86/HV: Initialize GHCB page in Isolation VM Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-08-02 11:53 ` Joerg Roedel
2021-08-02 11:53 ` Joerg Roedel
2021-08-02 12:35 ` Tianyu Lan
2021-08-02 12:35 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 02/13] x86/HV: Initialize shared memory boundary in the " Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 03/13] x86/HV: Add new hvcall guest address host visibility support Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-07-28 15:29 ` Dave Hansen
2021-07-28 15:29 ` Dave Hansen
2021-07-29 12:49 ` Tianyu Lan
2021-07-29 12:49 ` Tianyu Lan
2021-08-02 12:01 ` Joerg Roedel
2021-08-02 12:01 ` Joerg Roedel
2021-08-02 12:59 ` Tianyu Lan
2021-08-02 12:59 ` Tianyu Lan
2021-08-02 13:11 ` Juergen Gross via iommu [this message]
2021-08-02 13:11 ` Juergen Gross
2021-08-02 13:30 ` Joerg Roedel
2021-08-02 13:30 ` Joerg Roedel
2021-07-28 17:06 ` Dave Hansen
2021-07-28 17:06 ` Dave Hansen
2021-07-29 13:01 ` Tianyu Lan
2021-07-29 13:01 ` Tianyu Lan
2021-07-29 14:09 ` Dave Hansen
2021-07-29 14:09 ` Dave Hansen
2021-07-29 15:02 ` Tianyu Lan
2021-07-29 15:02 ` Tianyu Lan
2021-07-29 16:05 ` Dave Hansen
2021-07-29 16:05 ` Dave Hansen
2021-07-30 2:52 ` Tianyu Lan
2021-07-30 2:52 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 04/13] HV: Mark vmbus ring buffer visible to host in Isolation VM Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-08-02 12:07 ` Joerg Roedel
2021-08-02 12:07 ` Joerg Roedel
2021-08-02 12:56 ` Tianyu Lan
2021-08-02 12:56 ` Tianyu Lan
2021-08-02 12:59 ` Joerg Roedel
2021-08-02 12:59 ` Joerg Roedel
2021-08-02 13:08 ` Tianyu Lan
2021-08-02 13:08 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 05/13] HV: Add Write/Read MSR registers via ghcb page Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-08-02 12:28 ` Joerg Roedel
2021-08-02 12:28 ` Joerg Roedel
2021-08-02 13:18 ` Tianyu Lan
2021-08-02 13:18 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 06/13] HV: Add ghcb hvcall support for SNP VM Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-08-02 12:39 ` Joerg Roedel
2021-08-02 12:39 ` Joerg Roedel
2021-08-02 13:32 ` Tianyu Lan
2021-08-02 13:32 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 07/13] HV/Vmbus: Add SNP support for VMbus channel initiate message Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-08-02 12:58 ` Joerg Roedel
2021-08-02 12:58 ` Joerg Roedel
2021-07-28 14:52 ` [PATCH 08/13] HV/Vmbus: Initialize VMbus ring buffer for Isolation VM Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 09/13] DMA: Add dma_map_decrypted/dma_unmap_encrypted() function Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-07-29 15:13 ` Tianyu Lan
2021-07-29 15:13 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 10/13] x86/Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-07-29 16:29 ` Konrad Rzeszutek Wilk
2021-07-29 16:29 ` Konrad Rzeszutek Wilk
2021-07-30 4:10 ` Tianyu Lan
2021-07-30 4:10 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 11/13] HV/IOMMU: Enable swiotlb bounce buffer for Isolation VM Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 12/13] HV/Netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 13/13] HV/Storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan
2021-08-02 13:20 ` Joerg Roedel
2021-08-02 13:20 ` Joerg Roedel
2021-08-02 14:08 ` Tianyu Lan
2021-08-02 14:08 ` Tianyu Lan
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