Re: [PATCH] fuse: mark DAX VMA page protections as decrypted

"Gupta, Pankaj" <[email protected]>
Newsgroups org.kernel.vger.linux-fsdevel,dev.linux.lists.linux-coco,org.kernel.vger.linux-kernel
Message-ID <[email protected]>
>>
>> I started testing this on my AMD system with QEMU and am still working
>> through the configuration details.
>>
>> Did you happen to test this with QEMU under SEV or SEV-SNP as well? If so,
>> would you mind sharing your setup steps or
>>
>> the QEMU/virtio-fs configuration you used?
>>
>>
>> The error I am facing is: device 'vhost-user-fs-pci' does not support
>> ACCESS_PLATFORM when it is enabled.
>>
>> But under SEV-SNP ACCESS_PLATFORM(iommu_platform) is globally enabled and
>> when I manually disable it, guest says:
>>
>> [    8.788217] virtiofs virtio0: device must provide
>> VIRTIO_F_ACCESS_PLATFORM
> I'm not sure what the real solution should be for this, but does this
> hack for QEMU avoid the error?
>
>    https://github.com/AMDESE/qemu/commit/63f103e35f5f3735d10f7618584bd8bb208e2c28

Mike,

Yes, this hack avoids the error, and I was able to get virtio-fs working 
with it.

Thanks for sharing the patch!

Best regards,

Pankaj
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