Commit 7515f45c authored Mar 03, 2025 by Dan Williams

coco/guest: Move shared guest CC infrastructure to drivers/virt/coco/guest/



In preparation for creating a new drivers/virt/coco/host/ directory to
house shared host driver infrastructure for confidential computing, move
configfs-tsm to a guest/ sub-directory. The tsm.ko module is renamed to
tsm_reports.ko. The old tsm.ko module was only ever demand loaded by
kernel internal dependencies, so it should not affect existing userspace
module install scripts.

The new drivers/virt/coco/guest/ is also a preparatory landing spot for
new / optional TSM Report mechanics like a TCB stability enumeration /
watchdog mechanism. To be added later.

Cc: Wu Hao <hao.wu@intel.com>
Cc: Yilun Xu <yilun.xu@intel.com>
Cc: Samuel Ortiz <sameo@rivosinc.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Alexey Kardashevskiy <aik@amd.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Link: https://patch.msgid.link/174107246641.1288555.208426916259466774.stgit@dwillia2-xfh.jf.intel.com


Signed-off-by: Dan Williams <dan.j.williams@intel.com>

parent 71ded61b

MAINTAINERS

+1 −1

Original line number	Diff line number	Diff line
		@@ -24560,7 +24560,7 @@ M: Dan Williams <dan.j.williams@intel.com>
		L: linux-coco@lists.linux.dev
		S: Maintained
		F: Documentation/ABI/testing/configfs-tsm-report
		F: drivers/virt/coco/tsm.c
		F: drivers/virt/coco/guest/
		F: include/linux/tsm.h

		TRUSTED SERVICES TEE DRIVER

drivers/virt/coco/Kconfig

+2 −4

Original line number	Diff line number	Diff line
		@@ -3,10 +3,6 @@
		# Confidential computing related collateral
		#

		config TSM_REPORTS
		select CONFIGFS_FS
		tristate

		source "drivers/virt/coco/efi_secret/Kconfig"

		source "drivers/virt/coco/pkvm-guest/Kconfig"
		@@ -16,3 +12,5 @@ source "drivers/virt/coco/sev-guest/Kconfig"
		source "drivers/virt/coco/tdx-guest/Kconfig"

		source "drivers/virt/coco/arm-cca-guest/Kconfig"

		source "drivers/virt/coco/guest/Kconfig"

drivers/virt/coco/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -2,9 +2,9 @@
		#
		# Confidential computing related collateral
		#
		obj-$(CONFIG_TSM_REPORTS) += tsm.o
		obj-$(CONFIG_EFI_SECRET) += efi_secret/
		obj-$(CONFIG_ARM_PKVM_GUEST) += pkvm-guest/
		obj-$(CONFIG_SEV_GUEST) += sev-guest/
		obj-$(CONFIG_INTEL_TDX_GUEST) += tdx-guest/
		obj-$(CONFIG_ARM_CCA_GUEST) += arm-cca-guest/
		obj-$(CONFIG_TSM_REPORTS) += guest/

drivers/virt/coco/guest/Kconfig

0 → 100644

+7 −0

Original line number	Diff line number	Diff line
		# SPDX-License-Identifier: GPL-2.0-only
		#
		# Confidential computing shared guest collateral
		#
		config TSM_REPORTS
		select CONFIGFS_FS
		tristate

drivers/virt/coco/guest/Makefile

0 → 100644

+3 −0

Original line number	Diff line number	Diff line
		# SPDX-License-Identifier: GPL-2.0
		obj-$(CONFIG_TSM_REPORTS) += tsm_report.o
		tsm_report-y := report.o