iommu/amd: Clean up RMP entries for IOMMU pages during SNP shutdown

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Add a new IOMMU API interface amd_iommu_snp_disable() to transition
IOMMU pages to Hypervisor state from Reclaim state after SNP_SHUTDOWN_EX
command. Invoke this API from the CCP driver after SNP_SHUTDOWN_EX
command.

Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20240126041126.1927228-20-michael.roth@amd.com

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Ashish Kalra 2024-01-25 22:11:19 -06:00 • committed by Borislav Petkov (AMD)

parent a867ad6b34

commit f366a8dac1

3 changed files with 105 additions and 0 deletions

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20

drivers/crypto/ccp/sev-dev.c

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79

drivers/iommu/amd/init.c

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6

include/linux/amd-iommu.h

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