[PATCH 00/11] Move SEV-SNP initialization to ccp driver

[Tycho Andersen]

From: "Tycho Andersen (AMD)" <tycho@xxxxxxxxxx>

The SEV firmware has support for disabling SNP when doing a
SNP_SHUTDOWN_EX, which will turn off the SNPEn bit. If setting SNPEn is
also delayed until module load, this means that we can control the
lifecycle of SNP enablement with module load and unload. This way, the
SNP checks are only done while the module is actually loaded.

Tom Lendacky (3):
  x86/snp: Keep the RMP table bookkeeping area mapped
  x86/snp: Create a function to clear/zero the RMP
  crypto: ccp - Update HV_FIXED page states to allow freeing of memory

Tycho Andersen (AMD) (8):
  x86/snp: drop support for SNP hotplug
  x86/snp: drop WBINVD before setting SNPEn
  x86/snp: create snp_prepare_for_snp_init()
  x86/snp, crypto: move SNP init to ccp driver
  x86/snp, crypto: move HSAVE_PA setup to arch/
  x86/snp: allow disabling MFDM
  x86/snp: create snp_x86_shutdown()
  crypto: ccp - implement SNP x86 shutdown

 arch/x86/include/asm/sev.h   |   4 +
 arch/x86/virt/svm/sev.c      | 148 +++++++++++++++++++----------------
 drivers/crypto/ccp/sev-dev.c |  65 ++++++++-------
 include/linux/psp-sev.h      |   4 +-
 4 files changed, 125 insertions(+), 96 deletions(-)


base-commit: 11439c4635edd669ae435eec308f4ab8a0804808
-- 
2.53.0