File 19072-vmx-pat.patch of Package xen
# HG changeset patch
# User Keir Fraser <keir.fraser@citrix.com>
# Date 1232623303 0
# Node ID d52921c18c3d0171bccb4651cca8412f2fff2dd9
# Parent 9f9ba1a7cc924fbc547e05ea21071becafe5e2c2
vmx: utilise the GUEST_PAT and HOST_PAT vmcs area
Signed-off-by: Xin Li <Xin.Li@intel.com>
Signed-off-by: Xiaohui Xin <xiaohui.xin@intel.com>
Index: xen-3.3.1-testing/xen/arch/x86/hvm/vmx/vmcs.c
===================================================================
--- xen-3.3.1-testing.orig/xen/arch/x86/hvm/vmx/vmcs.c
+++ xen-3.3.1-testing/xen/arch/x86/hvm/vmx/vmcs.c
@@ -166,14 +166,15 @@ static void vmx_init_vmcs_config(void)
#endif
min = VM_EXIT_ACK_INTR_ON_EXIT;
- opt = 0;
+ opt = VM_EXIT_SAVE_GUEST_PAT | VM_EXIT_LOAD_HOST_PAT;
#ifdef __x86_64__
min |= VM_EXIT_IA32E_MODE;
#endif
_vmx_vmexit_control = adjust_vmx_controls(
min, opt, MSR_IA32_VMX_EXIT_CTLS);
- min = opt = 0;
+ min = 0;
+ opt = VM_ENTRY_LOAD_GUEST_PAT;
_vmx_vmentry_control = adjust_vmx_controls(
min, opt, MSR_IA32_VMX_ENTRY_CTLS);
@@ -518,8 +519,6 @@ static int construct_vmcs(struct vcpu *v
/* VMCS controls. */
__vmwrite(PIN_BASED_VM_EXEC_CONTROL, vmx_pin_based_exec_control);
- __vmwrite(VM_EXIT_CONTROLS, vmx_vmexit_control);
- __vmwrite(VM_ENTRY_CONTROLS, vmx_vmentry_control);
v->arch.hvm_vmx.exec_control = vmx_cpu_based_exec_control;
v->arch.hvm_vmx.secondary_exec_control = vmx_secondary_exec_control;
@@ -533,9 +532,15 @@ static int construct_vmcs(struct vcpu *v
else
{
v->arch.hvm_vmx.secondary_exec_control &= ~SECONDARY_EXEC_ENABLE_EPT;
+ vmx_vmexit_control &= ~(VM_EXIT_SAVE_GUEST_PAT |
+ VM_EXIT_LOAD_HOST_PAT);
+ vmx_vmentry_control &= ~VM_ENTRY_LOAD_GUEST_PAT;
}
__vmwrite(CPU_BASED_VM_EXEC_CONTROL, v->arch.hvm_vmx.exec_control);
+ __vmwrite(VM_EXIT_CONTROLS, vmx_vmexit_control);
+ __vmwrite(VM_ENTRY_CONTROLS, vmx_vmentry_control);
+
if ( cpu_has_vmx_secondary_exec_control )
__vmwrite(SECONDARY_VM_EXEC_CONTROL,
v->arch.hvm_vmx.secondary_exec_control);
@@ -557,6 +562,8 @@ static int construct_vmcs(struct vcpu *v
vmx_disable_intercept_for_msr(v, MSR_IA32_SYSENTER_CS);
vmx_disable_intercept_for_msr(v, MSR_IA32_SYSENTER_ESP);
vmx_disable_intercept_for_msr(v, MSR_IA32_SYSENTER_EIP);
+ if ( cpu_has_vmx_pat && paging_mode_hap(d) )
+ vmx_disable_intercept_for_msr(v, MSR_IA32_CR_PAT);
}
/* I/O access bitmap. */
@@ -688,6 +695,21 @@ static int construct_vmcs(struct vcpu *v
__vmwrite(VIRTUAL_PROCESSOR_ID, v->arch.hvm_vmx.vpid);
}
+ if ( cpu_has_vmx_pat && paging_mode_hap(d) )
+ {
+ u64 host_pat, guest_pat;
+
+ rdmsrl(MSR_IA32_CR_PAT, host_pat);
+ guest_pat = 0x7040600070406ULL;
+
+ __vmwrite(HOST_PAT, host_pat);
+ __vmwrite(GUEST_PAT, guest_pat);
+#ifdef __i386__
+ __vmwrite(HOST_PAT_HIGH, host_pat >> 32);
+ __vmwrite(GUEST_PAT_HIGH, guest_pat >> 32);
+#endif
+ }
+
vmx_vmcs_exit(v);
paging_update_paging_modes(v); /* will update HOST & GUEST_CR3 as reqd */
@@ -968,6 +990,8 @@ void vmcs_dump_vcpu(struct vcpu *v)
vmx_dump_sel("LDTR", x86_seg_ldtr);
vmx_dump_sel("IDTR", x86_seg_idtr);
vmx_dump_sel("TR", x86_seg_tr);
+ printk("Guest PAT = 0x%08x%08x\n",
+ (uint32_t)vmr(GUEST_PAT_HIGH), (uint32_t)vmr(GUEST_PAT));
x = (unsigned long long)vmr(TSC_OFFSET_HIGH) << 32;
x |= (uint32_t)vmr(TSC_OFFSET);
printk("TSC Offset = %016llx\n", x);
@@ -1006,6 +1030,8 @@ void vmcs_dump_vcpu(struct vcpu *v)
(unsigned long long)vmr(HOST_SYSENTER_ESP),
(int)vmr(HOST_SYSENTER_CS),
(unsigned long long)vmr(HOST_SYSENTER_EIP));
+ printk("Host PAT = 0x%08x%08x\n",
+ (uint32_t)vmr(HOST_PAT_HIGH), (uint32_t)vmr(HOST_PAT));
printk("*** Control State ***\n");
printk("PinBased=%08x CPUBased=%08x SecondaryExec=%08x\n",
Index: xen-3.3.1-testing/xen/include/asm-x86/hvm/vmx/vmcs.h
===================================================================
--- xen-3.3.1-testing.orig/xen/include/asm-x86/hvm/vmx/vmcs.h
+++ xen-3.3.1-testing/xen/include/asm-x86/hvm/vmx/vmcs.h
@@ -150,11 +150,14 @@ extern u32 vmx_pin_based_exec_control;
#define VM_EXIT_IA32E_MODE 0x00000200
#define VM_EXIT_ACK_INTR_ON_EXIT 0x00008000
+#define VM_EXIT_SAVE_GUEST_PAT 0x00040000
+#define VM_EXIT_LOAD_HOST_PAT 0x00080000
extern u32 vmx_vmexit_control;
#define VM_ENTRY_IA32E_MODE 0x00000200
#define VM_ENTRY_SMM 0x00000400
#define VM_ENTRY_DEACT_DUAL_MONITOR 0x00000800
+#define VM_ENTRY_LOAD_GUEST_PAT 0x00004000
extern u32 vmx_vmentry_control;
#define SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES 0x00000001
@@ -181,6 +184,8 @@ extern bool_t cpu_has_vmx_ins_outs_instr
(vmx_secondary_exec_control & SECONDARY_EXEC_ENABLE_EPT)
#define cpu_has_vmx_vpid \
(vmx_secondary_exec_control & SECONDARY_EXEC_ENABLE_VPID)
+#define cpu_has_vmx_pat \
+ (vmx_vmentry_control & VM_ENTRY_LOAD_GUEST_PAT)
/* GUEST_INTERRUPTIBILITY_INFO flags. */
#define VMX_INTR_SHADOW_STI 0x00000001
@@ -232,6 +237,8 @@ enum vmcs_field {
VMCS_LINK_POINTER_HIGH = 0x00002801,
GUEST_IA32_DEBUGCTL = 0x00002802,
GUEST_IA32_DEBUGCTL_HIGH = 0x00002803,
+ GUEST_PAT = 0x00002804,
+ GUEST_PAT_HIGH = 0x00002805,
GUEST_PDPTR0 = 0x0000280a,
GUEST_PDPTR0_HIGH = 0x0000280b,
GUEST_PDPTR1 = 0x0000280c,
@@ -240,6 +247,8 @@ enum vmcs_field {
GUEST_PDPTR2_HIGH = 0x0000280f,
GUEST_PDPTR3 = 0x00002810,
GUEST_PDPTR3_HIGH = 0x00002811,
+ HOST_PAT = 0x00002c00,
+ HOST_PAT_HIGH = 0x00002c01,
PIN_BASED_VM_EXEC_CONTROL = 0x00004000,
CPU_BASED_VM_EXEC_CONTROL = 0x00004002,
EXCEPTION_BITMAP = 0x00004004,
