[edk2-devel] [PATCH 0/9] SEV-ES guest support fixes and cleanup
Laszlo Ersek
lersek at redhat.com
Thu Oct 15 07:43:50 UTC 2020
Hi Tom,
On 10/10/20 18:06, Tom Lendacky wrote:
> From: Tom Lendacky <thomas.lendacky at amd.com>
>
> This patch series provides some fixes, updates and cleanup to the SEV-ES
> guest support:
>
> The first patch updates the calculation of the qword offset of fields
> within the GHCB. Specifically, it removes the hardcoding of the offsets
> and uses the OFFSET_OF () and sizeof () functions to calculate the
> values, removes unused values and add values that will be used in later
> patches.
>
> The next five patches set the SwExitCode/SwExitInfo1/SwExitInfo2/SwScratch
> valid bits in the GHCB ValidBitmap area when these fields are set at
> VMGEXIT.
>
> The next two patches update the Qemu flash drive services support to
> add SEV-ES support to erasing blocks and to disable interrupts when using
> the GHCB.
>
> Finally, the last patch uses the processor number for setting the AP stack
> pointer instead of the APIC ID (using GetProcessorNumber()).
please file a TianoCore BZ for this series, assign it to yourself, link
the v1 posting in a comment on the BZ, and update the commit messages to
reference that BZ.
I find this relevant because edk2-stable202008 resolved TianoCore#2198.
If (in your opinion) downstreams that aim at supporting SEV-ES should
also have these patches (for example, if they should backport them on
top of edk2-stable202008), then having a TianoCore Bugzilla would be
quite helpful to them, for tracking purposes.
Thanks,
Laszlo
>
> ---
>
> These patches are based on commit:
> ae511331e0fb ("BaseTools Build_Rule: Add the missing ASM16_FLAGS for ASM16 source file")
>
> 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>
>
> Tom Lendacky (9):
> OvmfPkg/VmgExitLib: Update ValidBitmap settings
> 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
> OvmfPkg/QemuFlashFvbServicesRuntimeDxe: Disable interrupts when using
> GHCB
> UefiCpuPkg/MpInitLib: For SEV-ES guest set stack based on processor
> number
>
> MdePkg/Include/Register/Amd/Ghcb.h | 48 ++++++++------------
> OvmfPkg/Library/VmgExitLib/VmgExitLib.c | 30 ++++++++++++
> OvmfPkg/Library/VmgExitLib/VmgExitVcHandler.c | 10 +++-
> OvmfPkg/QemuFlashFvbServicesRuntimeDxe/QemuFlash.c | 4 +-
> OvmfPkg/QemuFlashFvbServicesRuntimeDxe/QemuFlashDxe.c | 21 +++++++++
> UefiCpuPkg/Library/MpInitLib/MpLib.c | 7 ++-
> UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm | 6 +++
> 7 files changed, 91 insertions(+), 35 deletions(-)
>
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