diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0064-KVM-Introduce-KVM_MEMORY_ENCRYPT_OP-ioctl.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0064-KVM-Introduce-KVM_MEMORY_ENCRYPT_OP-ioctl.patch | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0064-KVM-Introduce-KVM_MEMORY_ENCRYPT_OP-ioctl.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0064-KVM-Introduce-KVM_MEMORY_ENCRYPT_OP-ioctl.patch new file mode 100644 index 00000000..7f1238cf --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0064-KVM-Introduce-KVM_MEMORY_ENCRYPT_OP-ioctl.patch @@ -0,0 +1,111 @@ +From 13dfbee9fe761b68fbcee7546723a171892f09c1 Mon Sep 17 00:00:00 2001 +From: Sudheesh Mavila <sudheesh.mavila@amd.com> +Date: Mon, 22 Oct 2018 14:09:53 +0530 +Subject: [PATCH 64/95] KVM: Introduce KVM_MEMORY_ENCRYPT_OP ioctl +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +From 5acc5c063196b4a531a761a954023c1848ec832b + +If the hardware supports memory encryption then the +KVM_MEMORY_ENCRYPT_OP ioctl can be used by qemu to issue a platform +specific memory encryption commands. + +Cc: Thomas Gleixner <tglx@linutronix.de> +Cc: Ingo Molnar <mingo@redhat.com> +Cc: "H. Peter Anvin" <hpa@zytor.com> +Cc: Paolo Bonzini <pbonzini@redhat.com> +Cc: "Radim Krčmář" <rkrcmar@redhat.com> +Cc: Joerg Roedel <joro@8bytes.org> +Cc: Borislav Petkov <bp@suse.de> +Cc: Tom Lendacky <thomas.lendacky@amd.com> +Cc: x86@kernel.org +Cc: kvm@vger.kernel.org +Cc: linux-kernel@vger.kernel.org +Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> +Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> +Reviewed-by: Borislav Petkov <bp@suse.de> +Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com> +--- + Documentation/virtual/kvm/api.txt | 16 ++++++++++++++++ + arch/x86/include/asm/kvm_host.h | 1 + + arch/x86/kvm/x86.c | 6 ++++++ + include/uapi/linux/kvm.h | 2 ++ + 4 files changed, 25 insertions(+) + mode change 100644 => 100755 arch/x86/include/asm/kvm_host.h + +diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt +index 5d12166..8e11bb6 100644 +--- a/Documentation/virtual/kvm/api.txt ++++ b/Documentation/virtual/kvm/api.txt +@@ -3414,6 +3414,22 @@ invalid, if invalid pages are written to (e.g. after the end of memory) + or if no page table is present for the addresses (e.g. when using + hugepages). + ++4.109 KVM_MEMORY_ENCRYPT_OP ++ ++Capability: basic ++Architectures: x86 ++Type: system ++Parameters: an opaque platform specific structure (in/out) ++Returns: 0 on success; -1 on error ++ ++If the platform supports creating encrypted VMs then this ioctl can be used ++for issuing platform-specific memory encryption commands to manage those ++encrypted VMs. ++ ++Currently, this ioctl is used for issuing Secure Encrypted Virtualization ++(SEV) commands on AMD Processors. The SEV commands are defined in ++Documentation/virtual/kvm/amd-memory-encryption.txt. ++ + 5. The kvm_run structure + ------------------------ + +diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h +old mode 100644 +new mode 100755 +index 4015b88..7595643 +--- a/arch/x86/include/asm/kvm_host.h ++++ b/arch/x86/include/asm/kvm_host.h +@@ -1067,6 +1067,7 @@ struct kvm_x86_ops { + void (*cancel_hv_timer)(struct kvm_vcpu *vcpu); + + void (*setup_mce)(struct kvm_vcpu *vcpu); ++ int (*mem_enc_op)(struct kvm *kvm, void __user *argp); + + int (*get_msr_feature)(struct kvm_msr_entry *entry); + }; +diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c +index 3856828..5243482 100644 +--- a/arch/x86/kvm/x86.c ++++ b/arch/x86/kvm/x86.c +@@ -4384,6 +4384,12 @@ long kvm_arch_vm_ioctl(struct file *filp, + r = kvm_vm_ioctl_enable_cap(kvm, &cap); + break; + } ++ case KVM_MEMORY_ENCRYPT_OP: { ++ r = -ENOTTY; ++ if (kvm_x86_ops->mem_enc_op) ++ r = kvm_x86_ops->mem_enc_op(kvm, argp); ++ break; ++ } + default: + r = -ENOTTY; + } +diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h +index 27c62ab..409f266 100644 +--- a/include/uapi/linux/kvm.h ++++ b/include/uapi/linux/kvm.h +@@ -1360,6 +1360,8 @@ struct kvm_s390_ucas_mapping { + /* Available with KVM_CAP_S390_CMMA_MIGRATION */ + #define KVM_S390_GET_CMMA_BITS _IOWR(KVMIO, 0xb8, struct kvm_s390_cmma_log) + #define KVM_S390_SET_CMMA_BITS _IOW(KVMIO, 0xb9, struct kvm_s390_cmma_log) ++/* Memory Encryption Commands */ ++#define KVM_MEMORY_ENCRYPT_OP _IOWR(KVMIO, 0xba, unsigned long) + + #define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0) + #define KVM_DEV_ASSIGN_PCI_2_3 (1 << 1) +-- +2.7.4 + |