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Linus Torvalds 7f9ec7d816 A small set of updates for x86: 
- Return -EIO instead of success when the certificate buffer for SEV
    guests is not large enough.
 
  - Allow STIPB to be enabled with legacy IBSR. Legacy IBRS is cleared on
    return to userspace for performance reasons, but the leaves user space
    vulnerable to cross-thread attacks which STIBP prevents. Update the
    documentation accordingly.
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Merge tag 'x86-urgent-2023-03-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 updates from Thomas Gleixner:
 "A small set of updates for x86:

   - Return -EIO instead of success when the certificate buffer for SEV
     guests is not large enough

   - Allow STIPB to be enabled with legacy IBSR. Legacy IBRS is cleared
     on return to userspace for performance reasons, but the leaves user
     space vulnerable to cross-thread attacks which STIBP prevents.
     Update the documentation accordingly"

* tag 'x86-urgent-2023-03-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  virt/sev-guest: Return -EIO if certificate buffer is not large enough
  Documentation/hw-vuln: Document the interaction between IBRS and STIBP
  x86/speculation: Allow enabling STIBP with legacy IBRS
 		2023-03-05 11:27:48 -08:00
..
core-scheduling.rst uapi/linux/prctl: provide macro definitions for the PR_SCHED_CORE type argument 2021-09-29 13:00:05 +02:00
cross-thread-rsb.rst Documentation/hw-vuln: Fix rST warning 2023-02-15 07:24:23 -05:00
index.rst Documentation/hw-vuln: Add documentation for Cross-Thread Return Predictions 2023-02-10 07:27:37 -05:00
l1d_flush.rst Documentation: Add L1D flushing Documentation 2021-07-28 11:42:25 +02:00
l1tf.rst docs: add IRQ documentation at the core-api book 2020-05-15 12:00:56 -06:00
mds.rst Documentation: admin-guide: correct spelling 2023-02-02 11:04:42 -07:00
multihit.rst x86/bugs/multihit: Fix mitigation reporting when VMX is not in use 2020-08-07 01:32:00 +02:00
processor_mmio_stale_data.rst x86/bugs: Add "unknown" reporting for MMIO Stale Data 2022-08-18 15:35:22 +02:00
special-register-buffer-data-sampling.rst docs: admin-guide: hw-vuln: avoid using ReST :doc:`foo` markup 2021-06-17 13:24:36 -06:00
spectre.rst Documentation/hw-vuln: Document the interaction between IBRS and STIBP 2023-02-27 19:02:47 +01:00
tsx_async_abort.rst Documentation: fix multiple typos found in the admin-guide subdirectory 2020-12-08 10:27:56 -07:00