From 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d Mon Sep 17 00:00:00 2001 From: Zeng Chi Date: Mon, 21 Sep 2026 18:24:42 +0800 Subject: KVM: Don't pre-reserve xarray entries when storing empty/NULL attributes Skip the xarray reservation loop when clearing all memory attributes, as storing NULL only erases the entry and never needs to allocate, so no reservation (and no cleanup of a failed one) is required in that case. Suggested-by: Sean Christopherson Cc: David Ballesteros Signed-off-by: Zeng Chi Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com [sean: split to separate patch] Signed-off-by: Sean Christopherson --- drivers/crypto/ccp/Kconfig | 56 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 drivers/crypto/ccp/Kconfig (limited to 'drivers/crypto/ccp/Kconfig') diff --git a/drivers/crypto/ccp/Kconfig b/drivers/crypto/ccp/Kconfig new file mode 100644 index 000000000..f16a0f611 --- /dev/null +++ b/drivers/crypto/ccp/Kconfig @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: GPL-2.0-only +config CRYPTO_DEV_CCP_DD + tristate "Secure Processor device driver" + depends on CPU_SUP_AMD || ARM64 + default m + help + Provides AMD Secure Processor device driver. + If you choose 'M' here, this module will be called ccp. + +config CRYPTO_DEV_SP_CCP + bool "Cryptographic Coprocessor device" + default y + depends on CRYPTO_DEV_CCP_DD && DMADEVICES + select HW_RANDOM + select DMA_ENGINE + select CRYPTO_SHA1 + select CRYPTO_SHA256 + help + Provides the support for AMD Cryptographic Coprocessor (CCP) device + which can be used to offload encryption operations such as SHA, AES + and more. + +config CRYPTO_DEV_CCP_CRYPTO + tristate "Encryption and hashing offload support" + default m + depends on CRYPTO_DEV_CCP_DD + depends on CRYPTO_DEV_SP_CCP + select CRYPTO_HASH + select CRYPTO_SKCIPHER + select CRYPTO_AUTHENC + select CRYPTO_RSA + select CRYPTO_LIB_AES + help + Support for using the cryptographic API with the AMD Cryptographic + Coprocessor. This module supports offload of SHA and AES algorithms. + If you choose 'M' here, this module will be called ccp_crypto. + +config CRYPTO_DEV_SP_PSP + bool "Platform Security Processor (PSP) device" + default y + depends on CRYPTO_DEV_CCP_DD && X86_64 && AMD_IOMMU + select PCI_TSM if PCI + help + Provide support for the AMD Platform Security Processor (PSP). + The PSP is a dedicated processor that provides support for key + management commands in Secure Encrypted Virtualization (SEV) mode, + along with software-based Trusted Execution Environment (TEE) to + enable third-party trusted applications. + +config CRYPTO_DEV_CCP_DEBUGFS + bool "Enable CCP Internals in DebugFS" + default n + depends on CRYPTO_DEV_SP_CCP + help + Expose CCP device information such as operation statistics, feature + information, and descriptor queue contents. -- cgit v1.3.1