linux-stable/Documentation/arch/x86
Linus Torvalds b4442cadca - Add support managing TDX host hardware
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Merge tag 'x86_tdx_for_6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 TDX updates from Dave Hansen:
 "This contains the initial support for host-side TDX support so that
  KVM can run TDX-protected guests. This does not include the actual
  KVM-side support which will come from the KVM folks. The TDX host
  interactions with kexec also needs to be ironed out before this is
  ready for prime time, so this code is currently Kconfig'd off when
  kexec is on.

  The majority of the code here is the kernel telling the TDX module
  which memory to protect and handing some additional memory over to it
  to use to store TDX module metadata. That sounds pretty simple, but
  the TDX architecture is rather flexible and it takes quite a bit of
  back-and-forth to say, "just protect all memory, please."

  There is also some code tacked on near the end of the series to handle
  a hardware erratum. The erratum can make software bugs such as a
  kernel write to TDX-protected memory cause a machine check and
  masquerade as a real hardware failure. The erratum handling watches
  out for these and tries to provide nicer user errors"

* tag 'x86_tdx_for_6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  x86/virt/tdx: Make TDX host depend on X86_MCE
  x86/virt/tdx: Disable TDX host support when kexec is enabled
  Documentation/x86: Add documentation for TDX host support
  x86/mce: Differentiate real hardware #MCs from TDX erratum ones
  x86/cpu: Detect TDX partial write machine check erratum
  x86/virt/tdx: Handle TDX interaction with sleep and hibernation
  x86/virt/tdx: Initialize all TDMRs
  x86/virt/tdx: Configure global KeyID on all packages
  x86/virt/tdx: Configure TDX module with the TDMRs and global KeyID
  x86/virt/tdx: Designate reserved areas for all TDMRs
  x86/virt/tdx: Allocate and set up PAMTs for TDMRs
  x86/virt/tdx: Fill out TDMRs to cover all TDX memory regions
  x86/virt/tdx: Add placeholder to construct TDMRs to cover all TDX memory regions
  x86/virt/tdx: Get module global metadata for module initialization
  x86/virt/tdx: Use all system memory when initializing TDX module as TDX memory
  x86/virt/tdx: Add skeleton to enable TDX on demand
  x86/virt/tdx: Add SEAMCALL error printing for module initialization
  x86/virt/tdx: Handle SEAMCALL no entropy error in common code
  x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC
  x86/virt/tdx: Define TDX supported page sizes as macros
  ...
2024-01-18 13:41:48 -08:00
..
i386
x86_64
amd-memory-encryption.rst x86/sev/docs: Update document URL in amd-memory-encryption.rst 2023-09-22 11:29:23 +02:00
amd_hsmp.rst platform/x86/amd/hsmp: add support for metrics tbl 2023-10-12 16:29:58 +03:00
boot.rst Another moderately busy cycle for documentation, including: 2024-01-11 19:46:52 -08:00
booting-dt.rst
buslock.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
cpuinfo.rst Documentation/x86: Document what /proc/cpuinfo is for 2023-12-09 08:52:53 +01:00
earlyprintk.rst
elf_auxvec.rst
entry_64.rst
exception-tables.rst
features.rst docs: kernel_feat.py: fix potential command injection 2024-01-11 09:21:01 -07:00
ifs.rst
index.rst Documentation/x86: Add CET shadow stack description 2023-08-02 15:01:50 -07:00
intel-hfi.rst
intel_txt.rst
iommu.rst x86/iommu/docs: Update AMD IOMMU specification document URL 2023-09-24 10:47:35 +02:00
kernel-stacks.rst
mds.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
microcode.rst
mtrr.rst
orc-unwinder.rst
pat.rst
pti.rst x86/docs: Remove reference to syscall trampoline in PTI 2023-12-12 14:43:59 +01:00
resctrl.rst x86/resctrl: Display RMID of resource group 2023-10-17 14:05:40 +02:00
sgx.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
shstk.rst x86/shstk: Add ARCH_SHSTK_STATUS 2023-08-02 15:01:51 -07:00
sva.rst
tdx.rst Documentation/x86: Add documentation for TDX host support 2023-12-12 08:46:46 -08:00
tlb.rst
topology.rst x86/cpu: Move cpu_l[l2]c_id into topology info 2023-10-10 14:38:18 +02:00
tsx_async_abort.rst
usb-legacy-support.rst
xstate.rst
zero-page.rst