On 05/26/17 16:44, Brijesh Singh wrote:
> When SEV is enabled, the DMA must be performed on unencrypted pages.
> So when get asked to perfom FWCFG DMA read or write, we allocate a
> intermediate (bounce buffer) unencrypted buffer and use this buffer
> for DMA read or write.
> 
> 
> Cc: Jordan Justen <[email protected]>
> Cc: Laszlo Ersek <[email protected]>
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Brijesh Singh <[email protected]>
> ---
>  OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgDxeLib.inf |   7 ++
>  OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgDxe.c      | 114 ++++++++++++++++++++
>  2 files changed, 121 insertions(+)

Reviewed-by: Laszlo Ersek <[email protected]>

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