[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v3 08/10] nEPT: handle invept instruction from L1 VMM
From: Zhang Xiantao <xiantao.zhang@xxxxxxxxx> Add the INVEPT instruction emulation logic. Signed-off-by: Zhang Xiantao <xiantao.zhang@xxxxxxxxx> Acked-by: Tim Deegan <tim@xxxxxxx> --- xen/arch/x86/hvm/vmx/vmx.c | 6 ++++- xen/arch/x86/hvm/vmx/vvmx.c | 39 ++++++++++++++++++++++++++++++++++++ xen/include/asm-x86/hvm/vmx/vvmx.h | 1 + 3 files changed, 45 insertions(+), 1 deletions(-) diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c index ed8d532..94cac17 100644 --- a/xen/arch/x86/hvm/vmx/vmx.c +++ b/xen/arch/x86/hvm/vmx/vmx.c @@ -2573,10 +2573,14 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) update_guest_eip(); break; + case EXIT_REASON_INVEPT: + if ( nvmx_handle_invept(regs) == X86EMUL_OKAY ) + update_guest_eip(); + break; + case EXIT_REASON_MWAIT_INSTRUCTION: case EXIT_REASON_MONITOR_INSTRUCTION: case EXIT_REASON_GETSEC: - case EXIT_REASON_INVEPT: case EXIT_REASON_INVVPID: /* * We should never exit on GETSEC because CR4.SMXE is always 0 when diff --git a/xen/arch/x86/hvm/vmx/vvmx.c b/xen/arch/x86/hvm/vmx/vvmx.c index b275044..8346387 100644 --- a/xen/arch/x86/hvm/vmx/vvmx.c +++ b/xen/arch/x86/hvm/vmx/vvmx.c @@ -1356,6 +1356,45 @@ int nvmx_handle_vmwrite(struct cpu_user_regs *regs) return X86EMUL_OKAY; } +int nvmx_handle_invept(struct cpu_user_regs *regs) +{ + struct vmx_inst_decoded decode; + unsigned long eptp; + u64 inv_type; + + if ( !cpu_has_vmx_ept ) + return X86EMUL_EXCEPTION; + + if ( decode_vmx_inst(regs, &decode, &eptp, 0) + != X86EMUL_OKAY ) + return X86EMUL_EXCEPTION; + + inv_type = reg_read(regs, decode.reg2); + gdprintk(XENLOG_DEBUG,"inv_type:%ld, eptp:%lx\n", inv_type, eptp); + + switch ( inv_type ) { + case INVEPT_SINGLE_CONTEXT: + { + struct p2m_domain *p2m = vcpu_nestedhvm(current).nv_p2m; + if ( p2m ) + { + p2m_flush(current, p2m); + ept_sync_domain(p2m); + } + break; + } + case INVEPT_ALL_CONTEXT: + p2m_flush_nestedp2m(current->domain); + __invept(INVEPT_ALL_CONTEXT, 0, 0); + break; + default: + return X86EMUL_EXCEPTION; + } + vmreturn(regs, VMSUCCEED); + return X86EMUL_OKAY; +} + + #define __emul_value(enable1, default1) \ ((enable1 | default1) << 32 | (default1)) diff --git a/xen/include/asm-x86/hvm/vmx/vvmx.h b/xen/include/asm-x86/hvm/vmx/vvmx.h index e35e425..03ab987 100644 --- a/xen/include/asm-x86/hvm/vmx/vvmx.h +++ b/xen/include/asm-x86/hvm/vmx/vvmx.h @@ -191,6 +191,7 @@ int nvmx_handle_vmread(struct cpu_user_regs *regs); int nvmx_handle_vmwrite(struct cpu_user_regs *regs); int nvmx_handle_vmresume(struct cpu_user_regs *regs); int nvmx_handle_vmlaunch(struct cpu_user_regs *regs); +int nvmx_handle_invept(struct cpu_user_regs *regs); int nvmx_msr_read_intercept(unsigned int msr, u64 *msr_content); int nvmx_msr_write_intercept(unsigned int msr, -- 1.7.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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