From 93de2a6a4b91b72607136dd656edf03fb399d27f Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Wed, 23 Sep 2026 09:37:21 -0700 Subject: KVM: SEV: Do cache maintenance on the source VM during intra-host migration Manually perform cache maintenance on the source VM during intra-host migration to ensure no stale data is left in CPU caches after the VM is destroyed. Because the source VM is "converted" to a non-SEV VM, KVM's memory reclaim flows won't trigger cache maintenance, e.g. when all guest memory is reclaimed in response to detaching from the mmu_notifier. Note, relying on the destination VM to do cache maintenance isn't an option as KVM doesn't require identical guest memory configurations, i.e. the source VM may have access to memory that the destination VM does not. Enforcing equivalent memory configurations is infeasible, as it would require a *deep* comparison of memslots, e.g. to verify that not only are the memslot identical, but what the memslots point at is also identical. Fixes: b56639318bb2 ("KVM: SEV: Add support for SEV intra host migration") Cc: stable@vger.kernel.org Reported-by: Stefan Teodorescu Signed-off-by: Sean Christopherson Message-ID: <20260923163721.1584779-3-seanjc@google.com> Signed-off-by: Paolo Bonzini --- drivers/crypto/starfive/Kconfig | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 drivers/crypto/starfive/Kconfig (limited to 'drivers/crypto/starfive/Kconfig') diff --git a/drivers/crypto/starfive/Kconfig b/drivers/crypto/starfive/Kconfig new file mode 100644 index 000000000..11518ca3e --- /dev/null +++ b/drivers/crypto/starfive/Kconfig @@ -0,0 +1,26 @@ +# +# StarFive crypto drivers configuration +# + +config CRYPTO_DEV_JH7110 + tristate "StarFive JH7110 cryptographic engine driver" + depends on (SOC_STARFIVE && AMBA_PL08X) || COMPILE_TEST + depends on HAS_DMA + select CRYPTO_ENGINE + select CRYPTO_HMAC + select CRYPTO_SHA256 + select CRYPTO_SHA512 + select CRYPTO_SM3 + select CRYPTO_RSA + select CRYPTO_AES + select CRYPTO_CCM + select CRYPTO_GCM + select CRYPTO_ECB + select CRYPTO_CBC + select CRYPTO_CTR + help + Support for StarFive JH7110 crypto hardware acceleration engine. + This module provides acceleration for public key algo, + skciphers, AEAD and hash functions. + + If you choose 'M' here, this module will be called jh7110-crypto. -- cgit v1.3.1