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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 05/18] PVH xen: vmx realted preparatory changes for PVH
This is another preparotary patch for PVH. In this patch, following
functions are made non-static:
vmx_fpu_enter(), get_instruction_length(), update_guest_eip(),
vmx_dr_access(), and pv_cpuid().
There is no functionality change.
Changes in V2:
- prepend vmx_ to get_instruction_length and update_guest_eip.
- Do not export/use vmr().
Changes in V3:
- Do not change emulate_forced_invalid_op() in this patch.
Signed-off-by: Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>
---
xen/arch/x86/hvm/vmx/vmx.c | 72 +++++++++++++++---------------------
xen/arch/x86/hvm/vmx/vvmx.c | 2 +-
xen/arch/x86/traps.c | 2 +-
xen/include/asm-x86/hvm/vmx/vmcs.h | 1 +
xen/include/asm-x86/hvm/vmx/vmx.h | 16 +++++++-
xen/include/asm-x86/processor.h | 1 +
6 files changed, 49 insertions(+), 45 deletions(-)
diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c
index d0de44a..25a265e 100644
--- a/xen/arch/x86/hvm/vmx/vmx.c
+++ b/xen/arch/x86/hvm/vmx/vmx.c
@@ -577,7 +577,7 @@ static int vmx_load_vmcs_ctxt(struct vcpu *v, struct
hvm_hw_cpu *ctxt)
return 0;
}
-static void vmx_fpu_enter(struct vcpu *v)
+void vmx_fpu_enter(struct vcpu *v)
{
vcpu_restore_fpu_lazy(v);
v->arch.hvm_vmx.exception_bitmap &= ~(1u << TRAP_no_device);
@@ -1594,24 +1594,12 @@ const struct hvm_function_table * __init start_vmx(void)
return &vmx_function_table;
}
-/*
- * Not all cases receive valid value in the VM-exit instruction length field.
- * Callers must know what they're doing!
- */
-static int get_instruction_length(void)
-{
- int len;
- len = __vmread(VM_EXIT_INSTRUCTION_LEN); /* Safe: callers audited */
- BUG_ON((len < 1) || (len > 15));
- return len;
-}
-
-void update_guest_eip(void)
+void vmx_update_guest_eip(void)
{
struct cpu_user_regs *regs = guest_cpu_user_regs();
unsigned long x;
- regs->eip += get_instruction_length(); /* Safe: callers audited */
+ regs->eip += vmx_get_instruction_length(); /* Safe: callers audited */
regs->eflags &= ~X86_EFLAGS_RF;
x = __vmread(GUEST_INTERRUPTIBILITY_INFO);
@@ -1684,8 +1672,8 @@ static void vmx_do_cpuid(struct cpu_user_regs *regs)
regs->edx = edx;
}
-static void vmx_dr_access(unsigned long exit_qualification,
- struct cpu_user_regs *regs)
+void vmx_dr_access(unsigned long exit_qualification,
+ struct cpu_user_regs *regs)
{
struct vcpu *v = current;
@@ -2298,7 +2286,7 @@ static int vmx_handle_eoi_write(void)
if ( (((exit_qualification >> 12) & 0xf) == 1) &&
((exit_qualification & 0xfff) == APIC_EOI) )
{
- update_guest_eip(); /* Safe: APIC data write */
+ vmx_update_guest_eip(); /* Safe: APIC data write */
vlapic_EOI_set(vcpu_vlapic(current));
HVMTRACE_0D(VLAPIC);
return 1;
@@ -2511,7 +2499,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
HVMTRACE_1D(TRAP, vector);
if ( v->domain->debugger_attached )
{
- update_guest_eip(); /* Safe: INT3 */
+ vmx_update_guest_eip(); /* Safe: INT3 */
current->arch.gdbsx_vcpu_event = TRAP_int3;
domain_pause_for_debugger();
break;
@@ -2619,7 +2607,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
*/
inst_len = ((source != 3) || /* CALL, IRET, or JMP? */
(idtv_info & (1u<<10))) /* IntrType > 3? */
- ? get_instruction_length() /* Safe: SDM 3B 23.2.4 */ : 0;
+ ? vmx_get_instruction_length() /* Safe: SDM 3B 23.2.4 */ : 0;
if ( (source == 3) && (idtv_info & INTR_INFO_DELIVER_CODE_MASK) )
ecode = __vmread(IDT_VECTORING_ERROR_CODE);
regs->eip += inst_len;
@@ -2627,15 +2615,15 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
break;
}
case EXIT_REASON_CPUID:
- update_guest_eip(); /* Safe: CPUID */
+ vmx_update_guest_eip(); /* Safe: CPUID */
vmx_do_cpuid(regs);
break;
case EXIT_REASON_HLT:
- update_guest_eip(); /* Safe: HLT */
+ vmx_update_guest_eip(); /* Safe: HLT */
hvm_hlt(regs->eflags);
break;
case EXIT_REASON_INVLPG:
- update_guest_eip(); /* Safe: INVLPG */
+ vmx_update_guest_eip(); /* Safe: INVLPG */
exit_qualification = __vmread(EXIT_QUALIFICATION);
vmx_invlpg_intercept(exit_qualification);
break;
@@ -2643,7 +2631,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
regs->ecx = hvm_msr_tsc_aux(v);
/* fall through */
case EXIT_REASON_RDTSC:
- update_guest_eip(); /* Safe: RDTSC, RDTSCP */
+ vmx_update_guest_eip(); /* Safe: RDTSC, RDTSCP */
hvm_rdtsc_intercept(regs);
break;
case EXIT_REASON_VMCALL:
@@ -2653,7 +2641,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
rc = hvm_do_hypercall(regs);
if ( rc != HVM_HCALL_preempted )
{
- update_guest_eip(); /* Safe: VMCALL */
+ vmx_update_guest_eip(); /* Safe: VMCALL */
if ( rc == HVM_HCALL_invalidate )
send_invalidate_req();
}
@@ -2663,7 +2651,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
{
exit_qualification = __vmread(EXIT_QUALIFICATION);
if ( vmx_cr_access(exit_qualification) == X86EMUL_OKAY )
- update_guest_eip(); /* Safe: MOV Cn, LMSW, CLTS */
+ vmx_update_guest_eip(); /* Safe: MOV Cn, LMSW, CLTS */
break;
}
case EXIT_REASON_DR_ACCESS:
@@ -2677,7 +2665,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
{
regs->eax = (uint32_t)msr_content;
regs->edx = (uint32_t)(msr_content >> 32);
- update_guest_eip(); /* Safe: RDMSR */
+ vmx_update_guest_eip(); /* Safe: RDMSR */
}
break;
}
@@ -2686,63 +2674,63 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
uint64_t msr_content;
msr_content = ((uint64_t)regs->edx << 32) | (uint32_t)regs->eax;
if ( hvm_msr_write_intercept(regs->ecx, msr_content) == X86EMUL_OKAY )
- update_guest_eip(); /* Safe: WRMSR */
+ vmx_update_guest_eip(); /* Safe: WRMSR */
break;
}
case EXIT_REASON_VMXOFF:
if ( nvmx_handle_vmxoff(regs) == X86EMUL_OKAY )
- update_guest_eip();
+ vmx_update_guest_eip();
break;
case EXIT_REASON_VMXON:
if ( nvmx_handle_vmxon(regs) == X86EMUL_OKAY )
- update_guest_eip();
+ vmx_update_guest_eip();
break;
case EXIT_REASON_VMCLEAR:
if ( nvmx_handle_vmclear(regs) == X86EMUL_OKAY )
- update_guest_eip();
+ vmx_update_guest_eip();
break;
case EXIT_REASON_VMPTRLD:
if ( nvmx_handle_vmptrld(regs) == X86EMUL_OKAY )
- update_guest_eip();
+ vmx_update_guest_eip();
break;
case EXIT_REASON_VMPTRST:
if ( nvmx_handle_vmptrst(regs) == X86EMUL_OKAY )
- update_guest_eip();
+ vmx_update_guest_eip();
break;
case EXIT_REASON_VMREAD:
if ( nvmx_handle_vmread(regs) == X86EMUL_OKAY )
- update_guest_eip();
+ vmx_update_guest_eip();
break;
case EXIT_REASON_VMWRITE:
if ( nvmx_handle_vmwrite(regs) == X86EMUL_OKAY )
- update_guest_eip();
+ vmx_update_guest_eip();
break;
case EXIT_REASON_VMLAUNCH:
if ( nvmx_handle_vmlaunch(regs) == X86EMUL_OKAY )
- update_guest_eip();
+ vmx_update_guest_eip();
break;
case EXIT_REASON_VMRESUME:
if ( nvmx_handle_vmresume(regs) == X86EMUL_OKAY )
- update_guest_eip();
+ vmx_update_guest_eip();
break;
case EXIT_REASON_INVEPT:
if ( nvmx_handle_invept(regs) == X86EMUL_OKAY )
- update_guest_eip();
+ vmx_update_guest_eip();
break;
case EXIT_REASON_INVVPID:
if ( nvmx_handle_invvpid(regs) == X86EMUL_OKAY )
- update_guest_eip();
+ vmx_update_guest_eip();
break;
case EXIT_REASON_MWAIT_INSTRUCTION:
@@ -2790,14 +2778,14 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
int bytes = (exit_qualification & 0x07) + 1;
int dir = (exit_qualification & 0x08) ? IOREQ_READ : IOREQ_WRITE;
if ( handle_pio(port, bytes, dir) )
- update_guest_eip(); /* Safe: IN, OUT */
+ vmx_update_guest_eip(); /* Safe: IN, OUT */
}
break;
case EXIT_REASON_INVD:
case EXIT_REASON_WBINVD:
{
- update_guest_eip(); /* Safe: INVD, WBINVD */
+ vmx_update_guest_eip(); /* Safe: INVD, WBINVD */
vmx_wbinvd_intercept();
break;
}
@@ -2830,7 +2818,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
{
u64 new_bv = (((u64)regs->edx) << 32) | regs->eax;
if ( hvm_handle_xsetbv(new_bv) == 0 )
- update_guest_eip(); /* Safe: XSETBV */
+ vmx_update_guest_eip(); /* Safe: XSETBV */
break;
}
diff --git a/xen/arch/x86/hvm/vmx/vvmx.c b/xen/arch/x86/hvm/vmx/vvmx.c
index bb7688f..225de9f 100644
--- a/xen/arch/x86/hvm/vmx/vvmx.c
+++ b/xen/arch/x86/hvm/vmx/vvmx.c
@@ -2136,7 +2136,7 @@ int nvmx_n2_vmexit_handler(struct cpu_user_regs *regs,
tsc += __get_vvmcs(nvcpu->nv_vvmcx, TSC_OFFSET);
regs->eax = (uint32_t)tsc;
regs->edx = (uint32_t)(tsc >> 32);
- update_guest_eip();
+ vmx_update_guest_eip();
return 1;
}
diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c
index 9d04735..ce7c18a 100644
--- a/xen/arch/x86/traps.c
+++ b/xen/arch/x86/traps.c
@@ -736,7 +736,7 @@ int cpuid_hypervisor_leaves( uint32_t idx, uint32_t sub_idx,
return 1;
}
-static void pv_cpuid(struct cpu_user_regs *regs)
+void pv_cpuid(struct cpu_user_regs *regs)
{
uint32_t a, b, c, d;
diff --git a/xen/include/asm-x86/hvm/vmx/vmcs.h
b/xen/include/asm-x86/hvm/vmx/vmcs.h
index f30e5ac..c9d7118 100644
--- a/xen/include/asm-x86/hvm/vmx/vmcs.h
+++ b/xen/include/asm-x86/hvm/vmx/vmcs.h
@@ -475,6 +475,7 @@ void vmx_vmcs_switch(struct vmcs_struct *from, struct
vmcs_struct *to);
void vmx_set_eoi_exit_bitmap(struct vcpu *v, u8 vector);
void vmx_clear_eoi_exit_bitmap(struct vcpu *v, u8 vector);
int vmx_check_msr_bitmap(unsigned long *msr_bitmap, u32 msr, int access_type);
+void vmx_fpu_enter(struct vcpu *v);
void virtual_vmcs_enter(void *vvmcs);
void virtual_vmcs_exit(void *vvmcs);
u64 virtual_vmcs_vmread(void *vvmcs, u32 vmcs_encoding);
diff --git a/xen/include/asm-x86/hvm/vmx/vmx.h
b/xen/include/asm-x86/hvm/vmx/vmx.h
index c33b9f9..ad341dc 100644
--- a/xen/include/asm-x86/hvm/vmx/vmx.h
+++ b/xen/include/asm-x86/hvm/vmx/vmx.h
@@ -446,6 +446,18 @@ static inline int __vmxon(u64 addr)
return rc;
}
+/*
+ * Not all cases receive valid value in the VM-exit instruction length field.
+ * Callers must know what they're doing!
+ */
+static inline int vmx_get_instruction_length(void)
+{
+ int len;
+ len = __vmread(VM_EXIT_INSTRUCTION_LEN); /* Safe: callers audited */
+ BUG_ON((len < 1) || (len > 15));
+ return len;
+}
+
void vmx_get_segment_register(struct vcpu *, enum x86_segment,
struct segment_register *);
void vmx_inject_extint(int trap);
@@ -457,7 +469,9 @@ void ept_p2m_uninit(struct p2m_domain *p2m);
void ept_walk_table(struct domain *d, unsigned long gfn);
void setup_ept_dump(void);
-void update_guest_eip(void);
+void vmx_update_guest_eip(void);
+void vmx_dr_access(unsigned long exit_qualification,
+ struct cpu_user_regs *regs);
int alloc_p2m_hap_data(struct p2m_domain *p2m);
void free_p2m_hap_data(struct p2m_domain *p2m);
diff --git a/xen/include/asm-x86/processor.h b/xen/include/asm-x86/processor.h
index 5cdacc7..8c70324 100644
--- a/xen/include/asm-x86/processor.h
+++ b/xen/include/asm-x86/processor.h
@@ -566,6 +566,7 @@ void microcode_set_module(unsigned int);
int microcode_update(XEN_GUEST_HANDLE_PARAM(const_void), unsigned long len);
int microcode_resume_cpu(int cpu);
+void pv_cpuid(struct cpu_user_regs *regs);
#endif /* !__ASSEMBLY__ */
#endif /* __ASM_X86_PROCESSOR_H */
--
1.7.2.3
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