Commit Graph

4 Commits

Author SHA1 Message Date
Gerd Hoffmann ce4c76e46d OvmfPkg/Sec: Setup MTRR early in the boot process.
Specifically before running lzma uncompress of the main firmware volume.
This is needed to make sure caching is enabled, otherwise the uncompress
can be extremely slow.

Adapt the ASSERTs and MTRR setup in PlatformInitLib to the changes.

Background:  Depending on virtual machine configuration kvm may uses EPT
memory types to apply guest MTRR settings.  In case MTRRs are disabled
kvm will use the uncachable memory type for all mappings.  The
vmx_get_mt_mask() function in the linux kernel handles this and can be
found here:

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/arch/x86/kvm/vmx/vmx.c?h=v6.7.1#n7580

In most VM configurations kvm uses MTRR_TYPE_WRBACK unconditionally.  In
case the VM has a mdev device assigned that is not the case though.

Before commit e8aa4c6546 ("UefiCpuPkg/ResetVector: Cache Disable
should not be set by default in CR0") kvm also ended up using
MTRR_TYPE_WRBACK due to KVM_X86_QUIRK_CD_NW_CLEARED.  After that commit
kvm evaluates guest mtrr settings, which why setting up MTRRs early is
important now.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2024-06-26 06:04:49 +00:00
Rebecca Cran 8ba392687b OvmfPkg: Update code to be more C11 compliant by using __func__
__FUNCTION__ is a pre-standard extension that gcc and Visual C++ among
others support, while __func__ was standardized in C99.

Since it's more standard, replace __FUNCTION__ with __func__ throughout
OvmfPkg.

Signed-off-by: Rebecca Cran <rebecca@bsdio.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
2023-04-10 14:19:57 +00:00
Michael Kubacki ac0a286f4d OvmfPkg: Apply uncrustify changes
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737

Apply uncrustify changes to .c/.h files in the OvmfPkg package

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Andrew Fish <afish@apple.com>
2021-12-07 17:24:28 +00:00
Rebecca Cran 656419f922 Add BhyvePkg, to support the bhyve hypervisor
BhyvePkg supports the bhyve hypervisor, which is a hypervisor/virtual
machine manager available on FreeBSD, macOS and Illumos.

Signed-off-by: Rebecca Cran <rebecca@bsdio.com>
Message-Id: <20200713054131.479627-2-rebecca@bsdio.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
2020-07-31 13:03:10 +00:00