From: Tom Lendacky <thomas.lendacky@amd.com> To: 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 Cc: Borislav Petkov <bp@alien8.de>, Brijesh Singh <brijesh.singh@amd.com>, Joerg Roedel <joro@8bytes.org>, Andi Kleen <ak@linux.intel.com>, Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@linux.intel.com>, Tianyu Lan <Tianyu.Lan@microsoft.com>, Michael Ellerman <mpe@ellerman.id.au>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org> Subject: [PATCH 03/11] powerpc/pseries/svm: Add a powerpc version of prot_guest_has() Date: Tue, 27 Jul 2021 17:26:06 -0500 [thread overview] Message-ID: <19f7eefdc98e091fbfae9db0db575422f18f0543.1627424774.git.thomas.lendacky@amd.com> (raw) In-Reply-To: <cover.1627424773.git.thomas.lendacky@amd.com> Introduce a powerpc version of the prot_guest_has() function. This will be used to replace the powerpc mem_encrypt_active() implementation, so the implementation will initially only support the PATTR_MEM_ENCRYPT attribute. Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> --- arch/powerpc/include/asm/protected_guest.h | 30 ++++++++++++++++++++++ arch/powerpc/platforms/pseries/Kconfig | 1 + 2 files changed, 31 insertions(+) create mode 100644 arch/powerpc/include/asm/protected_guest.h diff --git a/arch/powerpc/include/asm/protected_guest.h b/arch/powerpc/include/asm/protected_guest.h new file mode 100644 index 000000000000..ce55c2c7e534 --- /dev/null +++ b/arch/powerpc/include/asm/protected_guest.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Protected Guest (and Host) Capability checks + * + * Copyright (C) 2021 Advanced Micro Devices, Inc. + * + * Author: Tom Lendacky <thomas.lendacky@amd.com> + */ + +#ifndef _POWERPC_PROTECTED_GUEST_H +#define _POWERPC_PROTECTED_GUEST_H + +#include <asm/svm.h> + +#ifndef __ASSEMBLY__ + +static inline bool prot_guest_has(unsigned int attr) +{ + switch (attr) { + case PATTR_MEM_ENCRYPT: + return is_secure_guest(); + + default: + return false; + } +} + +#endif /* __ASSEMBLY__ */ + +#endif /* _POWERPC_PROTECTED_GUEST_H */ diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index 5e037df2a3a1..8ce5417d6feb 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -159,6 +159,7 @@ config PPC_SVM select SWIOTLB select ARCH_HAS_MEM_ENCRYPT select ARCH_HAS_FORCE_DMA_UNENCRYPTED + select ARCH_HAS_PROTECTED_GUEST help There are certain POWER platforms which support secure guests using the Protected Execution Facility, with the help of an Ultravisor -- 2.32.0
next prev parent reply other threads:[~2021-07-27 22:27 UTC|newest] Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-27 22:26 [PATCH 00/11] Implement generic prot_guest_has() helper function Tom Lendacky 2021-07-27 22:26 ` [PATCH 01/11] mm: Introduce a function to check for virtualization protection features Tom Lendacky 2021-07-28 13:17 ` Christoph Hellwig 2021-07-28 16:28 ` Borislav Petkov 2021-08-02 10:34 ` Joerg Roedel 2021-08-11 14:53 ` Kuppuswamy, Sathyanarayanan 2021-08-11 15:39 ` Tom Lendacky 2021-07-27 22:26 ` [PATCH 02/11] x86/sev: Add an x86 version of prot_guest_has() Tom Lendacky 2021-07-28 13:22 ` Christoph Hellwig 2021-07-29 14:24 ` Tom Lendacky 2021-08-02 10:35 ` Joerg Roedel 2021-07-27 22:26 ` Tom Lendacky [this message] 2021-07-27 22:26 ` [PATCH 04/11] x86/sme: Replace occurrences of sme_active() with prot_guest_has() Tom Lendacky 2021-08-02 10:37 ` Joerg Roedel 2021-07-27 22:26 ` [PATCH 05/11] x86/sev: Replace occurrences of sev_active() " Tom Lendacky 2021-08-02 10:42 ` Joerg Roedel 2021-07-27 22:26 ` [PATCH 06/11] x86/sev: Replace occurrences of sev_es_active() " Tom Lendacky 2021-08-02 10:45 ` Joerg Roedel 2021-08-09 21:59 ` Tom Lendacky 2021-08-09 22:08 ` Kuppuswamy, Sathyanarayanan 2021-07-27 22:26 ` [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() " Tom Lendacky 2021-07-30 22:34 ` Sean Christopherson 2021-08-09 21:55 ` Tom Lendacky 2021-08-02 12:42 ` Christophe Leroy 2021-08-09 22:04 ` Tom Lendacky 2021-08-10 18:45 ` Kuppuswamy, Sathyanarayanan 2021-08-10 19:48 ` Tom Lendacky 2021-08-10 20:09 ` Kuppuswamy, Sathyanarayanan 2021-08-11 12:19 ` Kirill A. Shutemov 2021-08-11 15:52 ` Tom Lendacky 2021-08-12 10:07 ` Kirill A. Shutemov 2021-08-13 17:08 ` Tom Lendacky 2021-08-13 20:17 ` Tom Lendacky 2021-07-27 22:26 ` [PATCH 08/11] mm: Remove the now unused mem_encrypt_active() function Tom Lendacky 2021-08-02 10:47 ` Joerg Roedel 2021-07-27 22:26 ` [PATCH 09/11] x86/sev: " Tom Lendacky 2021-08-02 10:46 ` Joerg Roedel 2021-07-27 22:26 ` [PATCH 10/11] powerpc/pseries/svm: " Tom Lendacky 2021-07-27 22:26 ` [PATCH 11/11] s390/mm: " Tom Lendacky 2021-07-27 22:37 ` [PATCH 00/11] Implement generic prot_guest_has() helper function Tom Lendacky 2021-07-28 11:50 ` Christian König 2021-08-09 1:41 ` Kuppuswamy, Sathyanarayanan 2021-08-09 22:16 ` Tom Lendacky
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