BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4171
This patch-set introduces the feature of reserving shared memory for DMA operation. Its intention is to reduce the allocation and conversion of private/shared memory, so that boot performance can be improved significantly. Detailed information is in Patch#1. Patch#2 renames AmdSevIoMmu.* to CcIoMmu.* because these 2 files support both SEV and TDX guest. Patch#3 is provided by Tom Lendacky which add SEV support for reserved shared memory. Patch#4 updates the related section in Maintainers.txt. Code: https://github.com/mxu9/edk2/tree/IoMmu.v2 v2 changes: - Add Patch#3 which is provided by Tom Lendacky. It adds SEV support for reserved shared memory. - Add more description for mReservedMemRanges. It describes: 1) How the pre-allocated memory is managed. 2) What if the pre-allocated memory is used up. Cc: Erdem Aktas <erdemak...@google.com> Cc: James Bottomley <j...@linux.ibm.com> Cc: Jiewen Yao <jiewen....@intel.com> Cc: Gerd Hoffmann <kra...@redhat.com> Cc: Michael D Kinney <michael.d.kin...@intel.com> Cc: Liming Gao <gaolim...@byosoft.com.cn> Signed-off-by: Tom Lendacky <thomas.lenda...@amd.com> Signed-off-by: Min Xu <min.m...@intel.com> Min M Xu (3): OvmfPkg/IoMmuDxe: Reserve shared memory region for DMA operation OvmfPkg/IoMmuDxe: Rename AmdSevIoMmu to CcIoMmu Maintainers: Update OvmfPkg/IoMmuDxe Tom Lendacky (1): OvmfPkg/IoMmuDxe: Add SEV support for reserved shared memory Maintainers.txt | 2 +- OvmfPkg/IoMmuDxe/{AmdSevIoMmu.c => CcIoMmu.c} | 203 ++++---- OvmfPkg/IoMmuDxe/{AmdSevIoMmu.h => CcIoMmu.h} | 0 OvmfPkg/IoMmuDxe/IoMmuBuffer.c | 489 ++++++++++++++++++ OvmfPkg/IoMmuDxe/IoMmuDxe.c | 2 +- OvmfPkg/IoMmuDxe/IoMmuDxe.inf | 6 +- OvmfPkg/IoMmuDxe/IoMmuInternal.h | 179 +++++++ 7 files changed, 775 insertions(+), 106 deletions(-) rename OvmfPkg/IoMmuDxe/{AmdSevIoMmu.c => CcIoMmu.c} (85%) rename OvmfPkg/IoMmuDxe/{AmdSevIoMmu.h => CcIoMmu.h} (100%) create mode 100644 OvmfPkg/IoMmuDxe/IoMmuBuffer.c create mode 100644 OvmfPkg/IoMmuDxe/IoMmuInternal.h -- 2.29.2.windows.2 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#97289): https://edk2.groups.io/g/devel/message/97289 Mute This Topic: https://groups.io/mt/95639823/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
