From: Wincy Van Date: Thu, 11 Dec 2014 05:52:58 +0000 (+0300) Subject: KVM: nVMX: Add nested msr load/restore algorithm X-Git-Tag: fixes-v4.0-rc1~113^2~66 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ff651cb613b4cc8aa2e4284525948872b4d77d66;p=pandora-kernel.git KVM: nVMX: Add nested msr load/restore algorithm Several hypervisors need MSR auto load/restore feature. We read MSRs from VM-entry MSR load area which specified by L1, and load them via kvm_set_msr in the nested entry. When nested exit occurs, we get MSRs via kvm_get_msr, writing them to L1`s MSR store area. After this, we read MSRs from VM-exit MSR load area, and load them via kvm_set_msr. Signed-off-by: Wincy Van Signed-off-by: Paolo Bonzini --- diff --git a/arch/x86/include/uapi/asm/vmx.h b/arch/x86/include/uapi/asm/vmx.h index b813bf9da1e2..ff2b8e28883e 100644 --- a/arch/x86/include/uapi/asm/vmx.h +++ b/arch/x86/include/uapi/asm/vmx.h @@ -56,6 +56,7 @@ #define EXIT_REASON_MSR_READ 31 #define EXIT_REASON_MSR_WRITE 32 #define EXIT_REASON_INVALID_STATE 33 +#define EXIT_REASON_MSR_LOAD_FAIL 34 #define EXIT_REASON_MWAIT_INSTRUCTION 36 #define EXIT_REASON_MONITOR_INSTRUCTION 39 #define EXIT_REASON_PAUSE_INSTRUCTION 40 @@ -116,10 +117,14 @@ { EXIT_REASON_APIC_WRITE, "APIC_WRITE" }, \ { EXIT_REASON_EOI_INDUCED, "EOI_INDUCED" }, \ { EXIT_REASON_INVALID_STATE, "INVALID_STATE" }, \ + { EXIT_REASON_MSR_LOAD_FAIL, "MSR_LOAD_FAIL" }, \ { EXIT_REASON_INVD, "INVD" }, \ { EXIT_REASON_INVVPID, "INVVPID" }, \ { EXIT_REASON_INVPCID, "INVPCID" }, \ { EXIT_REASON_XSAVES, "XSAVES" }, \ { EXIT_REASON_XRSTORS, "XRSTORS" } +#define VMX_ABORT_SAVE_GUEST_MSR_FAIL 1 +#define VMX_ABORT_LOAD_HOST_MSR_FAIL 4 + #endif /* _UAPIVMX_H */ Reading git-diff-tree failed