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Mon, 9 Aug 2021 22:16:47 +0000 Subject: Re: [PATCH 00/11] Implement generic prot_guest_has() helper function To: "Kuppuswamy, Sathyanarayanan" , linux-kernel@vger.kernel.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-graphics-maintainer@vmware.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org References: <0d75f283-50b7-460d-3165-185cb955bd70@linux.intel.com> From: Tom Lendacky Message-ID: Date: Mon, 9 Aug 2021 17:16:43 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 In-Reply-To: <0d75f283-50b7-460d-3165-185cb955bd70@linux.intel.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-ClientProxiedBy: SA0PR11CA0032.namprd11.prod.outlook.com (2603:10b6:806:d0::7) To DM4PR12MB5229.namprd12.prod.outlook.com (2603:10b6:5:398::12) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [10.236.30.241] (165.204.77.1) by SA0PR11CA0032.namprd11.prod.outlook.com (2603:10b6:806:d0::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4394.17 via Frontend Transport; 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Can the >> folks copied on this series verify that nothing breaks for them. > > With this patch set, select ARCH_HAS_PROTECTED_GUEST and set > CONFIG_AMD_MEM_ENCRYPT=n, creates following error. > > ld: arch/x86/mm/ioremap.o: in function `early_memremap_is_setup_data': > arch/x86/mm/ioremap.c:672: undefined reference to `early_memremap_decrypted' > > It looks like early_memremap_is_setup_data() is not protected with > appropriate config. Ok, thanks for finding that. I'll fix that. Thanks, Tom > > >> >> Cc: Andi Kleen >> Cc: Andy Lutomirski >> Cc: Ard Biesheuvel >> Cc: Baoquan He >> Cc: Benjamin Herrenschmidt >> Cc: Borislav Petkov >> Cc: Christian Borntraeger >> Cc: Daniel Vetter >> Cc: Dave Hansen >> Cc: Dave Young >> Cc: David Airlie >> Cc: Heiko Carstens >> Cc: Ingo Molnar >> Cc: Joerg Roedel >> Cc: Maarten Lankhorst >> Cc: Maxime Ripard >> Cc: Michael Ellerman >> Cc: Paul Mackerras >> Cc: Peter Zijlstra >> Cc: Thomas Gleixner >> Cc: Thomas Zimmermann >> Cc: Vasily Gorbik >> Cc: VMware Graphics >> Cc: Will Deacon >> >> --- >> >> Patches based on: >> >> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Ftip%2Ftip.git&data=04%7C01%7Cthomas.lendacky%40amd.com%7C563b5e30a3254f6739aa08d95ad6e242%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637640701228434514%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=vx9v4EmYqVTsJ7KSr97gQaBWJ%2Fq%2BE9NOzXMhe3Fp7T8%3D&reserved=0 >> master >> commit 79e920060fa7 ("Merge branch 'WIP/fixes'") >> >> Tom Lendacky (11): >> mm: Introduce a function to check for virtualization protection >> features >> x86/sev: Add an x86 version of prot_guest_has() >> powerpc/pseries/svm: Add a powerpc version of prot_guest_has() >> x86/sme: Replace occurrences of sme_active() with prot_guest_has() >> x86/sev: Replace occurrences of sev_active() with prot_guest_has() >> x86/sev: Replace occurrences of sev_es_active() with prot_guest_has() >> treewide: Replace the use of mem_encrypt_active() with >> prot_guest_has() >> mm: Remove the now unused mem_encrypt_active() function >> x86/sev: Remove the now unused mem_encrypt_active() function >> powerpc/pseries/svm: Remove the now unused mem_encrypt_active() >> function >> s390/mm: Remove the now unused mem_encrypt_active() function >> >> arch/Kconfig | 3 ++ >> arch/powerpc/include/asm/mem_encrypt.h | 5 -- >> arch/powerpc/include/asm/protected_guest.h | 30 +++++++++++ >> arch/powerpc/platforms/pseries/Kconfig | 1 + >> arch/s390/include/asm/mem_encrypt.h | 2 - >> arch/x86/Kconfig | 1 + >> arch/x86/include/asm/kexec.h | 2 +- >> arch/x86/include/asm/mem_encrypt.h | 13 +---- >> arch/x86/include/asm/protected_guest.h | 27 ++++++++++ >> arch/x86/kernel/crash_dump_64.c | 4 +- >> arch/x86/kernel/head64.c | 4 +- >> arch/x86/kernel/kvm.c | 3 +- >> arch/x86/kernel/kvmclock.c | 4 +- >> arch/x86/kernel/machine_kexec_64.c | 19 +++---- >> arch/x86/kernel/pci-swiotlb.c | 9 ++-- >> arch/x86/kernel/relocate_kernel_64.S | 2 +- >> arch/x86/kernel/sev.c | 6 +-- >> arch/x86/kvm/svm/svm.c | 3 +- >> arch/x86/mm/ioremap.c | 16 +++--- >> arch/x86/mm/mem_encrypt.c | 60 +++++++++++++++------- >> arch/x86/mm/mem_encrypt_identity.c | 3 +- >> arch/x86/mm/pat/set_memory.c | 3 +- >> arch/x86/platform/efi/efi_64.c | 9 ++-- >> arch/x86/realmode/init.c | 8 +-- >> drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 4 +- >> drivers/gpu/drm/drm_cache.c | 4 +- >> drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 4 +- >> drivers/gpu/drm/vmwgfx/vmwgfx_msg.c | 6 +-- >> drivers/iommu/amd/init.c | 7 +-- >> drivers/iommu/amd/iommu.c | 3 +- >> drivers/iommu/amd/iommu_v2.c | 3 +- >> drivers/iommu/iommu.c | 3 +- >> fs/proc/vmcore.c | 6 +-- >> include/linux/mem_encrypt.h | 4 -- >> include/linux/protected_guest.h | 37 +++++++++++++ >> kernel/dma/swiotlb.c | 4 +- >> 36 files changed, 218 insertions(+), 104 deletions(-) >> create mode 100644 arch/powerpc/include/asm/protected_guest.h >> create mode 100644 arch/x86/include/asm/protected_guest.h >> create mode 100644 include/linux/protected_guest.h >> >