[PATCH 0/4] x86/CPU: Fix CR4 pinning and FRED in CoCo guests

[Borislav Petkov <bp@kernel.org>]

From: "Borislav Petkov (AMD)" <bp@alien8.de>

Hi,
 
the respective patches have very detailed explanations about what this is
addressing but basically, there's a window in time during boot when FRED is
not setup properly yet and if a CoCo guest generates an exception, it would
explode.
 
So this shuffles things a bit so that that doesn't happen.
 
Thx.

Borislav Petkov (AMD) (1):
  x86/cpu: Remove X86_CR4_FRED from the CR4 pinned bits mask

Nikunj A Dadhania (2):
  x86/cpu: Enable FSGSBASE early in cpu_init_exception_handling()
  x86/fred: Fix early boot failures on SEV-ES/SNP guests

Peter Zijlstra (1):
  x86/cpu: Add comment clarifying CRn pinning

 arch/x86/coco/sev/noinstr.c  |  6 ++++++
 arch/x86/entry/entry_fred.c  | 14 ++++++++++++++
 arch/x86/kernel/cpu/common.c | 33 ++++++++++++++++++++++++++-------
 3 files changed, 46 insertions(+), 7 deletions(-)

-- 
2.51.0