On Mon, Dec 13, 2021 at 08:56:49PM +0800, Min Xu wrote: > RFC： https://bugzilla.tianocore.org/show_bug.cgi?id=3429 > > If TDX is enabled then we do not support DMA operation in PEI phase. > This is mainly because DMA in TDX guest requires using bounce buffer > (which need to allocate dynamic memory and allocating a PAGE size'd > buffer can be challenge in PEI phase). > > Cc: Ard Biesheuvel <ardb+tianoc...@kernel.org> > Cc: Jordan Justen <jordan.l.jus...@intel.com> > Cc: Brijesh Singh <brijesh.si...@amd.com> > Cc: Erdem Aktas <erdemak...@google.com> > Cc: James Bottomley <j...@linux.ibm.com> > Cc: Jiewen Yao <jiewen....@intel.com> > Cc: Tom Lendacky <thomas.lenda...@amd.com> > Cc: Gerd Hoffmann <kra...@redhat.com> > Signed-off-by: Min Xu <min.m...@intel.com>
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