This series is proposed as a replacement (or a replacement "basis") for
patches #1 through #3 of Brijesh's series
[PATCH v1 0/4] OvmfPkg : IoMmuDxe: BusMasterCommonBuffer support when
SEV is active
[email protected]">http://mid.mail-archive.com/[email protected]
Patch #4 of the same series ("OvmfPkg : QemuFwCfgLib: Map DMA buffer
with CommonBuffer when SEV is enable") is required on top of this
series; otherwise QemuFwCfgLib will break on SEV.
In the present series, patches #1 through #7 are lightweight
improvements for OvmfPkg/IoMmuDxe, concerning line width, MAP_INFO field
names, conversion specifiers for DEBUG(), coding style, error
propagation, and library class listings.
Patch #8 ("zero out pages before releasing them") fixes the "information
leak" issue pointed out in:
[email protected]">http://mid.mail-archive.com/[email protected]
Patch #9 ('rework setup of "MapInfo->PlainTextAddress" in Map()') fixes
as-yet undiscussed issues, and lays the groundwork for patch #10, by
reworking the calculation of the plaintext buffer address.
Patch #10 ("implement in-place decryption/encryption for Map/Unmap")
fixes the issues around BusMasterCommonBuffer[64] operations that were
discussed in the following messages:
[email protected]">http://mid.mail-archive.com/[email protected]
[email protected]">http://mid.mail-archive.com/[email protected]
[email protected]">http://mid.mail-archive.com/[email protected]
[email protected]">http://mid.mail-archive.com/[email protected]
Patch #11 ("abort harder on memory encryption mask failures") settles
the error handling for MemEncryptSevClearPageEncMask() and
MemEncryptSevSetPageEncMask(), discussed in:
[email protected]">http://mid.mail-archive.com/[email protected]
Patch #12 ("Unmap(): recycle MAP_INFO after BusMasterCommonBuffer[64]")
implements the "free list" proposed in:
[email protected]">http://mid.mail-archive.com/[email protected]
The series has been formatted with "--function-context", for easier
review.
Repo: https://github.com/lersek/edk2.git
Branch: amdsev_iommu_cleanups_fixes
Cc: Ard Biesheuvel <[email protected]>
Cc: Brijesh Singh <[email protected]>
Cc: Jordan Justen <[email protected]>
Cc: Tom Lendacky <[email protected]>
Thanks
Laszlo
Laszlo Ersek (12):
OvmfPkg/IoMmuDxe: rewrap source code to 79 characters
OvmfPkg/IoMmuDxe: rename DeviceAddress to PlainTextAddress in MAP_INFO
OvmfPkg/IoMmuDxe: rename HostAddress to CryptedAddress in MAP_INFO
OvmfPkg/IoMmuDxe: convert UINTN arguments to UINT64 for the %Lx fmt
spec
OvmfPkg/IoMmuDxe: don't initialize local variables
OvmfPkg/IoMmuDxe: propagate errors from AmdSevInstallIoMmuProtocol()
OvmfPkg/IoMmuDxe: clean up used library classes
OvmfPkg/IoMmuDxe: zero out pages before releasing them
OvmfPkg/IoMmuDxe: rework setup of "MapInfo->PlainTextAddress" in Map()
OvmfPkg/IoMmuDxe: implement in-place decryption/encryption for
Map/Unmap
OvmfPkg/IoMmuDxe: abort harder on memory encryption mask failures
OvmfPkg/IoMmuDxe: Unmap(): recycle MAP_INFO after
BusMasterCommonBuffer[64]
OvmfPkg/IoMmuDxe/IoMmuDxe.inf | 19 +-
OvmfPkg/IoMmuDxe/AmdSevIoMmu.h | 14 +-
OvmfPkg/IoMmuDxe/AmdSevIoMmu.c | 594 ++++++++++++++------
OvmfPkg/IoMmuDxe/IoMmuDxe.c | 25 +-
4 files changed, 447 insertions(+), 205 deletions(-)
--
2.13.1.3.g8be5a757fa67
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