[edk2-devel] [PATCH v4 00/11] SEV-ES guest support fixes and cleanup
Lendacky, Thomas
thomas.lendacky at amd.com
Tue Nov 10 22:22:49 UTC 2020
On 11/10/20 1:28 PM, Laszlo Ersek wrote:
> On 11/06/20 18:53, Lendacky, Thomas wrote:
>> From: Tom Lendacky <thomas.lendacky at amd.com>
>>
>> This patch series provides some fixes, updates and cleanup to the SEV-ES
>> guest support:
>>
>> - Update the calculation of the qword offset of fields within the GHCB
>> by removing the hardcoding of the offsets and using the OFFSET_OF ()
>> and sizeof () functions to calculate the values. Remove unused values
>> and add values that will be used in later patches.
>>
>> - Set the SwExitCode, SwExitInfo1, SwExitInfo2 and SwScratch valid bits
>> in the GHCB ValidBitmap area when these fields are for a VMGEXIT. This
>> is done by adding two new interfaces to the VmgExitLib library to set
>> and test the bits of the GHCB ValidBitmap. This reduces code duplication
>> and keeps access to the ValidBitmap field within the VmgExitLib library.
>>
>> - Update the Qemu flash drive services support to add SEV-ES support for
>> erasing blocks.
>>
>> - Disable interrupts when using the GHCB.
>>
>> - Use the processor number for setting the AP stack pointer instead of the
>> APIC ID by calling GetProcessorNumber().
>>
>> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3008
>
> Merged as commit range 8c610e6075f2..d150439b7263, via
> <https://github.com/tianocore/edk2/pull/1110>.
>
Thanks you, Laszlo, as well as everyone involved in reviewing the patches.
Tom
> Thanks
> Laszlo
>
>>
>> ---
>>
>> These patches are based on commit:
>> dc0dae2d18d4 ("BaseTools: Fix BaseTools nmake cleanall hang issue")
>>
>> Cc: Ard Biesheuvel <ard.biesheuvel at arm.com>
>> Cc: Eric Dong <eric.dong at intel.com>
>> Cc: Laszlo Ersek <lersek at redhat.com>
>> Cc: Liming Gao <gaoliming at byosoft.com.cn>
>> Cc: Jordan Justen <jordan.l.justen at intel.com>
>> Cc: Michael D Kinney <michael.d.kinney at intel.com>
>> Cc: Rahul Kumar <rahul1.kumar at intel.com>
>> Cc: Zhiguang Liu <zhiguang.liu at intel.com>
>> Cc: Ray Ni <ray.ni at intel.com>
>> Cc: Tom Lendacky <thomas.lendacky at amd.com>
>> Cc: Brijesh Singh <brijesh.singh at amd.com>
>>
>> Changes since v3:
>> - Replace the use of "sizeof (UINT64)" in the GHCB_REGISTER enum with
>> a macro that uses "sizeof (UINT64)" to avoid ECC errors during CI
>> (suggested by Laszlo).
>>
>> Changes since v2:
>> - Don't rename the GHCB_REGISTER enum type.
>>
>> Changes since v1:
>> - For the GHCB savearea changes, create a new reserved area name instead
>> of "renumbering" the reserved areas.
>> - Rework the ValidBitmap set/test support to be part of the VmgExitLib
>> library. Create two new interfaces for setting and testing bits in the
>> GHCB ValidBitmap field and adjust all existing code and the new code in
>> this series to use these interfaces for the ValidBitmap updates/checks.
>> - Don't disable interrupts for just the Qemu flash services support, but
>> rather, cover all users of the GHCB by disabling interrupts in VmgInit()
>> and restoring them in VmgDone(). This requires changes to those
>> interaces.
>>
>> Tom Lendacky (11):
>> MdePkg: Clean up GHCB field offsets and save area
>> UefiCpuPkg/VmgExitLib: Add interfaces to set/read GHCB ValidBitmap
>> bits
>> OvmfPkg/VmgExitLib: Implement new VmgExitLib interfaces
>> OvmfPkg/VmgExitLib: Set the SW exit fields when performing VMGEXIT
>> OvmfPkg/VmgExitLib: Set the SwScratch valid bit for IOIO events
>> OvmfPkg/VmgExitLib: Set the SwScratch valid bit for MMIO events
>> UefiCpuPkg/MpInitLib: Set the SW exit fields when performing VMGEXIT
>> OvmfPkg/QemuFlashFvbServicesRuntimeDxe: Set the SwScratch valid bit
>> OvmfPkg/QemuFlashFvbServicesRuntimeDxe: Fix erase blocks for SEV-ES
>> UefiCpuPkg, OvmfPkg: Disable interrupts when using the GHCB
>> UefiCpuPkg/MpInitLib: For SEV-ES guest, set stack based on processor
>> number
>>
>> MdePkg/Include/Register/Amd/Ghcb.h | 43 +++----
>> UefiCpuPkg/Include/Library/VmgExitLib.h | 51 +++++++-
>> OvmfPkg/Library/VmgExitLib/VmgExitLib.c | 84 ++++++++++++-
>> OvmfPkg/Library/VmgExitLib/VmgExitVcHandler.c | 129 ++++++--------------
>> OvmfPkg/QemuFlashFvbServicesRuntimeDxe/QemuFlash.c | 4 +-
>> OvmfPkg/QemuFlashFvbServicesRuntimeDxe/QemuFlashDxe.c | 6 +-
>> UefiCpuPkg/Library/MpInitLib/DxeMpLib.c | 5 +-
>> UefiCpuPkg/Library/MpInitLib/MpLib.c | 14 ++-
>> UefiCpuPkg/Library/VmgExitLibNull/VmgExitLibNull.c | 60 +++++++--
>> UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm | 6 +
>> 10 files changed, 261 insertions(+), 141 deletions(-)
>>
>
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