From mboxrd@z Thu Jan 1 00:00:00 1970 From: Qing He Subject: [PATCH 12/17] vmx: nest: CR0.TS and #NM Date: Thu, 22 Apr 2010 17:41:24 +0800 Message-ID: <1271929289-18572-13-git-send-email-qing.he@intel.com> References: <1271929289-18572-1-git-send-email-qing.he@intel.com> Return-path: In-Reply-To: <1271929289-18572-1-git-send-email-qing.he@intel.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com Cc: Qing He List-Id: xen-devel@lists.xenproject.org 1. #NM exits from L2 should be handled by L0 if it wants. 2. HOST_CR0.TS may need to be updated after L1<->L2 switch Signed-off-by: Qing He --- nest.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff -r 2332586ff957 -r 25c338cbc024 xen/arch/x86/hvm/vmx/nest.c --- a/xen/arch/x86/hvm/vmx/nest.c Thu Apr 22 22:30:09 2010 +0800 +++ b/xen/arch/x86/hvm/vmx/nest.c Thu Apr 22 22:30:09 2010 +0800 @@ -791,6 +791,9 @@ regs->rsp = __get_vvmcs(nest->vvmcs, GUEST_RSP); regs->rflags = __get_vvmcs(nest->vvmcs, GUEST_RFLAGS); + /* updating host cr0 to sync TS bit */ + __vmwrite(HOST_CR0, v->arch.hvm_vmx.host_cr0); + /* TODO: EPT_POINTER */ } @@ -927,6 +930,9 @@ regs->rsp = __get_vvmcs(nest->vvmcs, HOST_RSP); regs->rflags = __vmread(GUEST_RFLAGS); + /* updating host cr0 to sync TS bit */ + __vmwrite(HOST_CR0, v->arch.hvm_vmx.host_cr0); + vmreturn(regs, VMSUCCEED); } @@ -1036,13 +1042,18 @@ /* * decided by L0 and L1 exception bitmap, if the vetor is set by - * both, L0 has priority on #PF, L1 has priority on others + * both, L0 has priority on #PF and #NM, L1 has priority on others */ if ( vector == TRAP_page_fault ) { if ( paging_mode_hap(v->domain) ) nest->vmexit_pending = 1; } + else if ( vector == TRAP_no_device ) + { + if ( v->fpu_dirtied ) + nest->vmexit_pending = 1; + } else if ( (intr_info & valid_mask) == valid_mask ) { exec_bitmap =__get_vvmcs(nest->vvmcs, EXCEPTION_BITMAP);