From: "Kuppuswamy, Sathyanarayanan" <sathyanarayanan.kuppuswamy@linux.intel.com>
To: Tom Lendacky <thomas.lendacky@amd.com>,
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>,
Tianyu Lan <Tianyu.Lan@microsoft.com>,
Andy Lutomirski <luto@kernel.org>,
Ard Biesheuvel <ardb@kernel.org>, Baoquan He <bhe@redhat.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Daniel Vetter <daniel@ffwll.ch>,
Dave Hansen <dave.hansen@linux.intel.com>,
Dave Young <dyoung@redhat.com>, David Airlie <airlied@linux.ie>,
Heiko Carstens <hca@linux.ibm.com>,
Ingo Molnar <mingo@redhat.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Paul Mackerras <paulus@samba.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Thomas Zimmermann <tzimmermann@suse.de>,
Vasily Gorbik <gor@linux.ibm.com>, Will Deacon <will@kernel.org>
Subject: Re: [PATCH 00/11] Implement generic prot_guest_has() helper function
Date: Sun, 8 Aug 2021 18:41:54 -0700 [thread overview]
Message-ID: <0d75f283-50b7-460d-3165-185cb955bd70@linux.intel.com> (raw)
In-Reply-To: <cover.1627424773.git.thomas.lendacky@amd.com>
Hi Tom,
On 7/27/21 3:26 PM, Tom Lendacky wrote:
> This patch series provides a generic helper function, prot_guest_has(),
> to replace the sme_active(), sev_active(), sev_es_active() and
> mem_encrypt_active() functions.
>
> It is expected that as new protected virtualization technologies are
> added to the kernel, they can all be covered by a single function call
> instead of a collection of specific function calls all called from the
> same locations.
>
> The powerpc and s390 patches have been compile tested only. 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.
>
> Cc: Andi Kleen <ak@linux.intel.com>
> Cc: Andy Lutomirski <luto@kernel.org>
> Cc: Ard Biesheuvel <ardb@kernel.org>
> Cc: Baoquan He <bhe@redhat.com>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: Christian Borntraeger <borntraeger@de.ibm.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Dave Hansen <dave.hansen@linux.intel.com>
> Cc: Dave Young <dyoung@redhat.com>
> Cc: David Airlie <airlied@linux.ie>
> Cc: Heiko Carstens <hca@linux.ibm.com>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Joerg Roedel <joro@8bytes.org>
> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> Cc: Maxime Ripard <mripard@kernel.org>
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Thomas Zimmermann <tzimmermann@suse.de>
> Cc: Vasily Gorbik <gor@linux.ibm.com>
> Cc: VMware Graphics <linux-graphics-maintainer@vmware.com>
> Cc: Will Deacon <will@kernel.org>
>
> ---
>
> Patches based on:
> https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 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
>
--
Sathyanarayanan Kuppuswamy
Linux Kernel Developer
next prev parent reply other threads:[~2021-08-09 1:42 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 ` [PATCH 03/11] powerpc/pseries/svm: Add a powerpc " Tom Lendacky
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 [this message]
2021-08-09 22:16 ` Tom Lendacky
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=0d75f283-50b7-460d-3165-185cb955bd70@linux.intel.com \
--to=sathyanarayanan.kuppuswamy@linux.intel.com \
--cc=Tianyu.Lan@microsoft.com \
--cc=airlied@linux.ie \
--cc=ak@linux.intel.com \
--cc=amd-gfx@lists.freedesktop.org \
--cc=ardb@kernel.org \
--cc=benh@kernel.crashing.org \
--cc=bhe@redhat.com \
--cc=borntraeger@de.ibm.com \
--cc=bp@alien8.de \
--cc=brijesh.singh@amd.com \
--cc=daniel@ffwll.ch \
--cc=dave.hansen@linux.intel.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=dyoung@redhat.com \
--cc=gor@linux.ibm.com \
--cc=hca@linux.ibm.com \
--cc=iommu@lists.linux-foundation.org \
--cc=joro@8bytes.org \
--cc=kexec@lists.infradead.org \
--cc=kvm@vger.kernel.org \
--cc=linux-efi@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-graphics-maintainer@vmware.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=luto@kernel.org \
--cc=maarten.lankhorst@linux.intel.com \
--cc=mingo@redhat.com \
--cc=mpe@ellerman.id.au \
--cc=mripard@kernel.org \
--cc=paulus@samba.org \
--cc=peterz@infradead.org \
--cc=platform-driver-x86@vger.kernel.org \
--cc=tglx@linutronix.de \
--cc=thomas.lendacky@amd.com \
--cc=tzimmermann@suse.de \
--cc=will@kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).