linux-kernel - Re: [PATCH v3 2/2] virtio: replace arch_has_restricted_virtio_memory

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Date:   Mon, 09 May 2022 11:59:49 +0000
From:   Boris Petkov <bp@...en8.de>
To:     Juergen Gross <jgross@...e.com>, xen-devel@...ts.xenproject.org,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        x86@...nel.org, linux-s390@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
CC:     Arnd Bergmann <arnd@...db.de>, Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Christoph Hellwig <hch@...radead.org>,
        Oleksandr Tyshchenko <olekstysh@...il.com>
Subject: Re: [PATCH v3 2/2] virtio: replace arch_has_restricted_virtio_memory_access()



On May 4, 2022 3:57:03 PM UTC, Juergen Gross <jgross@...e.com> wrote:
>Instead of using arch_has_restricted_virtio_memory_access() together
>with CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS, replace those
>with platform_has() and a new platform feature
>PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS.
>
>Signed-off-by: Juergen Gross <jgross@...e.com>
>---
>V2:
>- move setting of PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS in SEV case
>  to sev_setup_arch().
>V3:
>- remove Hyper-V chunk (Michael Kelley)
>- remove include virtio_config.h from mem_encrypt.c (Oleksandr Tyshchenko)
>- add comment for PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS (Oleksandr Tyshchenko)
>---
> arch/s390/Kconfig                |  1 -
> arch/s390/mm/init.c              | 13 +++----------
> arch/x86/Kconfig                 |  1 -
> arch/x86/mm/mem_encrypt.c        |  7 -------
> arch/x86/mm/mem_encrypt_amd.c    |  4 ++++
> drivers/virtio/Kconfig           |  6 ------
> drivers/virtio/virtio.c          |  5 ++---
> include/linux/platform-feature.h |  6 +++++-
> include/linux/virtio_config.h    |  9 ---------
> 9 files changed, 14 insertions(+), 38 deletions(-)

Acked-by: Borislav Petkov <bp@...e.de>
-- 
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