From: Michael Roth <michael.roth@amd.com>
To: Borislav Petkov <bp@alien8.de>
Cc: <kvm@vger.kernel.org>, <linux-coco@lists.linux.dev>,
<linux-mm@kvack.org>, <linux-crypto@vger.kernel.org>,
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<sathyanarayanan.kuppuswamy@linux.intel.com>,
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<ashish.kalra@amd.com>, <nikunj.dadhania@amd.com>,
<liam.merwick@oracle.com>, <zhi.a.wang@intel.com>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Subject: Re: [PATCH RFC v9 05/51] x86/coco: move CONFIG_HAS_CC_PLATFORM check down into coco/Makefile
Date: Tue, 20 Jun 2023 15:43:15 -0500 [thread overview]
Message-ID: <20230620204315.xr7wtcrowc7oprka@amd.com> (raw)
In-Reply-To: <20230620120920.GAZJGW8B6XHrsoLGCJ@fat_crate.local>
On Tue, Jun 20, 2023 at 02:09:20PM +0200, Borislav Petkov wrote:
> On Sun, Jun 11, 2023 at 11:25:13PM -0500, Michael Roth wrote:
> > Currently CONFIG_HAS_CC_PLATFORM is a prereq for building anything in
> ^^^^^^
>
> Use proper english words pls.
>
> > arch/x86/coco, but that is generally only applicable for guest support.
> >
> > For SEV-SNP, helpers related purely to host support will also live in
> > arch/x86/coco. To allow for CoCo-related host support code in
> > arch/x86/coco, move that check down into the Makefile and check for it
> > specifically when needed.
>
> I have no clue what that means. Example?
Basically, arch/x86/coco/Makefile is never processed if arch/x86/Kbuild
indicates that CONFIG_HAS_CC_PLATFORM is not set. So if we want to have
stuff in arch/x86/coco/Makefile that build for !CONFIG_HAS_CC_PLATFORM,
like SNP host support, which does not rely on CONFIG_HAS_CC_PLATFORM
being set, that check needs to be moved down into arch/x86/coco/Makefile.
>
> The last time we talked about paths, we ended up agreeing on:
>
> https://lore.kernel.org/all/Yg5nh1RknPRwIrb8@zn.tnic/
>
> So your "helpers related purely to host support" should go to
>
> arch/x86/virt/svm/sev*.c
>
> And just to keep it simple, that should be
>
> arch/x86/virt/svm/sev.c
>
> and if there's real need to split that, we can do that later.
Ok, makes sense.
Thanks,
Mike
>
> Thx.
>
> --
> Regards/Gruss,
> Boris.
>
> https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2023-06-20 20:43 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-12 4:25 [PATCH RFC v9 00/51] Add AMD Secure Nested Paging (SEV-SNP) Hypervisor Support Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 01/51] KVM: x86: Add gmem hook for initializing private memory Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 02/51] KVM: x86: Add gmem hook for invalidating " Michael Roth
2023-06-12 10:49 ` Borislav Petkov
2023-06-19 13:39 ` Borislav Petkov
2023-06-12 4:25 ` [PATCH RFC v9 03/51] KVM: x86: Use full 64-bit error code for kvm_mmu_do_page_fault Michael Roth
2023-06-14 14:24 ` Isaku Yamahata
2023-06-12 4:25 ` [PATCH RFC v9 04/51] KVM: x86: Determine shared/private faults using a configurable mask Michael Roth
2023-06-14 16:47 ` Isaku Yamahata
2023-06-20 20:28 ` Michael Roth
2023-06-20 21:18 ` Isaku Yamahata
2023-06-21 23:00 ` Michael Roth
2023-06-22 8:01 ` Isaku Yamahata
2023-06-22 9:55 ` Huang, Kai
2023-06-22 15:32 ` Michael Roth
2023-06-22 22:31 ` Huang, Kai
2023-06-22 23:39 ` Isaku Yamahata
2023-06-22 23:52 ` Huang, Kai
2023-06-23 14:43 ` Isaku Yamahata
2023-06-19 16:27 ` Borislav Petkov
2023-06-20 20:36 ` Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 05/51] x86/coco: move CONFIG_HAS_CC_PLATFORM check down into coco/Makefile Michael Roth
2023-06-12 7:07 ` Kirill A . Shutemov
2023-06-20 12:09 ` Borislav Petkov
2023-06-20 20:43 ` Michael Roth [this message]
2023-06-21 8:54 ` Borislav Petkov
2023-06-29 21:02 ` Michael Roth
2023-07-10 3:05 ` Sathyanarayanan Kuppuswamy
2023-07-10 13:11 ` Tom Lendacky
2023-06-12 4:25 ` [PATCH RFC v9 06/51] x86/cpufeatures: Add SEV-SNP CPU feature Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 07/51] x86/sev: Add the host SEV-SNP initialization support Michael Roth
2023-06-12 15:34 ` Dave Hansen
2023-06-21 9:15 ` Borislav Petkov
2023-06-21 14:31 ` Dave Hansen
2023-06-21 15:59 ` Borislav Petkov
2023-06-21 9:42 ` Borislav Petkov
2023-06-21 14:36 ` Tom Lendacky
2023-06-21 19:15 ` Kalra, Ashish
2023-08-09 13:03 ` Jeremi Piotrowski
2023-06-12 4:25 ` [PATCH RFC v9 08/51] x86/speculation: Do not enable Automatic IBRS if SEV SNP is enabled Michael Roth
2023-06-12 15:39 ` Dave Hansen
2023-07-18 22:34 ` Kim Phillips
2023-07-18 23:17 ` Dave Hansen
2023-07-20 19:11 ` Kim Phillips
2023-07-20 22:24 ` Dave Hansen
2023-07-21 16:56 ` Kim Phillips
2023-06-12 4:25 ` [PATCH RFC v9 09/51] x86/sev: Add RMP entry lookup helpers Michael Roth
2023-06-12 16:08 ` Dave Hansen
2023-06-30 21:57 ` Michael Roth
2023-06-30 22:29 ` Dave Hansen
2023-06-12 4:25 ` [PATCH RFC v9 10/51] x86/fault: Add helper for dumping RMP entries Michael Roth
2023-06-12 16:12 ` Dave Hansen
2023-06-12 4:25 ` [PATCH RFC v9 11/51] x86/traps: Define RMP violation #PF error code Michael Roth
2023-06-12 16:26 ` Dave Hansen
2023-06-12 4:25 ` [PATCH RFC v9 12/51] x86/fault: Report RMP page faults for kernel addresses Michael Roth
2023-06-12 16:30 ` Dave Hansen
2023-06-12 4:25 ` [PATCH RFC v9 13/51] x86/fault: Handle RMP page faults for user addresses Michael Roth
2023-06-12 16:40 ` Dave Hansen
2023-06-12 4:25 ` [PATCH RFC v9 14/51] x86/sev: Add helper functions for RMPUPDATE and PSMASH instruction Michael Roth
2023-06-12 17:00 ` Dave Hansen
2023-06-12 4:25 ` [PATCH RFC v9 15/51] x86/sev: Invalidate pages from the direct map when adding them to the RMP table Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 16/51] crypto: ccp: Define the SEV-SNP commands Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 17/51] crypto: ccp: Add support to initialize the AMD-SP for SEV-SNP Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 18/51] crypto: ccp: Provide API to issue SEV and SNP commands Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 19/51] x86/sev: Introduce snp leaked pages list Michael Roth
2023-08-09 12:46 ` Jeremi Piotrowski
2023-06-12 4:25 ` [PATCH RFC v9 20/51] crypto: ccp: Handle the legacy TMR allocation when SNP is enabled Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 21/51] crypto: ccp: Handle the legacy SEV command " Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 22/51] crypto: ccp: Add the SNP_PLATFORM_STATUS command Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 23/51] KVM: SEV: Select CONFIG_KVM_PROTECTED_VM when CONFIG_KVM_AMD_SEV=y Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 24/51] KVM: SVM: Add support to handle AP reset MSR protocol Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 25/51] KVM: SVM: Add GHCB handling for Hypervisor Feature Support requests Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 26/51] KVM: SVM: Make AVIC backing, VMSA and VMCB memory allocation SNP safe Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 27/51] KVM: SVM: Add initial SEV-SNP support Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 28/51] KVM: SVM: Add KVM_SNP_INIT command Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 29/51] KVM: SVM: Add KVM_SEV_SNP_LAUNCH_START command Michael Roth
2023-06-12 17:08 ` Peter Gonda
2023-06-12 4:25 ` [PATCH RFC v9 30/51] KVM: Add HVA range operator Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 31/51] KVM: Split out memory attribute xarray updates to helper function Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 32/51] KVM: SVM: Add KVM_SEV_SNP_LAUNCH_UPDATE command Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 33/51] KVM: SVM: Add KVM_SEV_SNP_LAUNCH_FINISH command Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 34/51] KVM: SVM: Add support to handle GHCB GPA register VMGEXIT Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 35/51] KVM: SVM: Add KVM_EXIT_VMGEXIT Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 36/51] KVM: SVM: Add support to handle MSR based Page State Change VMGEXIT Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 37/51] KVM: SVM: Add support to handle " Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 38/51] KVM: x86: Export the kvm_zap_gfn_range() for the SNP use Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 39/51] KVM: x86: Define RMP page fault error bits for #NPF Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 40/51] KVM: SVM: Add support to handle RMP nested page faults Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 41/51] KVM: SVM: Use a VMSA physical address variable for populating VMCB Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 42/51] KVM: SVM: Support SEV-SNP AP Creation NAE event Michael Roth
2023-08-15 16:00 ` Peter Gonda
2023-06-12 4:25 ` [PATCH RFC v9 43/51] KVM: SEV: Configure MMU to check for private fault flags Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 44/51] KVM: SEV: Implement gmem hook for initializing private pages Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 45/51] KVM: SEV: Implement gmem hook for invalidating " Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 46/51] KVM: SVM: Add module parameter to enable the SEV-SNP Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 47/51] iommu/amd: Add IOMMU_SNP_SHUTDOWN support Michael Roth
2023-09-07 10:31 ` Suthikulpanit, Suravee
2023-06-12 4:25 ` [PATCH RFC v9 48/51] crypto: ccp: Add the SNP_{SET,GET}_EXT_CONFIG command Michael Roth
2023-06-13 6:24 ` Alexey Kardashevskiy
2023-06-12 4:25 ` [PATCH RFC v9 49/51] x86/sev: Add KVM commands for per-instance certs Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 50/51] KVM: SVM: Provide support for SNP_GUEST_REQUEST NAE event Michael Roth
2023-06-12 4:25 ` [PATCH RFC v9 51/51] crypto: ccp: Add debug support for decrypting pages Michael Roth
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