[RFC v2 PATCH 02/13] KVM: Add KVM_EXIT_MEMORY_ERROR exit
From: Chao Peng <hidden>
Date: 2021-11-19 13:49:15
Also in:
kvm, linux-fsdevel, lkml, qemu-devel
Subsystem:
kernel virtual machine (kvm), the rest · Maintainers:
Paolo Bonzini, Linus Torvalds
This new exit allows userspace to handle memory related error. It will be used for shared memory <-->private memory conversion. Signed-off-by: Yu Zhang <redacted> Signed-off-by: Chao Peng <redacted> --- include/uapi/linux/kvm.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 7c93d61cb19e..7e3a8935534b 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h@@ -285,6 +285,18 @@ struct kvm_tdx_exit { } u; }; +struct kvm_memory_exit { +#define KVM_EXIT_MEM_MAP_SHARED 1 +#define KVM_EXIT_MEM_MAP_PRIVATE 2 + __u32 type; + union { + struct { + __u64 gpa; + __u64 size; + } map; + } u; +}; + #define KVM_S390_GET_SKEYS_NONE 1 #define KVM_S390_SKEYS_MAX 1048576
@@ -324,6 +336,7 @@ struct kvm_tdx_exit { #define KVM_EXIT_X86_BUS_LOCK 33 #define KVM_EXIT_XEN 34 #define KVM_EXIT_RISCV_SBI 35 +#define KVM_EXIT_MEMORY_ERROR 36 #define KVM_EXIT_TDX 50 /* dump number to avoid conflict. */ /* For KVM_EXIT_INTERNAL_ERROR */
@@ -542,6 +555,8 @@ struct kvm_run { unsigned long args[6]; unsigned long ret[2]; } riscv_sbi; + /* KVM_EXIT_MEMORY_ERROR */ + struct kvm_memory_exit mem; /* KVM_EXIT_TDX_VMCALL */ struct kvm_tdx_exit tdx; /* Fix the size of the union. */
--
2.17.1