From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Need to fix FIELD_* constants for this to make the exit qualification
check work.
Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
---
x86/vmx.h | 2 ++
x86/vmx_tests.c | 32 +++++++++++++++++++++++++++++---
2 files changed, 31 insertions(+), 3 deletions(-)
diff --git a/x86/vmx.h b/x86/vmx.h
index 26dd161..69a5385 100644
--- a/x86/vmx.h
+++ b/x86/vmx.h
@@ -357,6 +357,8 @@ enum Ctrl0 {
CPU_RDTSC = 1ul << 12,
CPU_CR3_LOAD = 1ul << 15,
CPU_CR3_STORE = 1ul << 16,
+ CPU_CR8_LOAD = 1ul << 19,
+ CPU_CR8_STORE = 1ul << 20,
CPU_TPR_SHADOW = 1ul << 21,
CPU_NMI_WINDOW = 1ul << 22,
CPU_IO = 1ul << 24,
diff --git a/x86/vmx_tests.c b/x86/vmx_tests.c
index a40cb18..d0ce365 100644
--- a/x86/vmx_tests.c
+++ b/x86/vmx_tests.c
@@ -820,8 +820,8 @@ static int iobmp_exit_handler()
#define INSN_ALWAYS_TRAP 2
#define INSN_NEVER_TRAP 3
-#define FIELD_EXIT_QUAL 0
-#define FIELD_INSN_INFO 1
+#define FIELD_EXIT_QUAL 0x1
+#define FIELD_INSN_INFO 0x2
asm(
"insn_hlt: hlt;ret\n\t"
@@ -829,6 +829,12 @@ asm(
"insn_mwait: mwait;ret\n\t"
"insn_rdpmc: rdpmc;ret\n\t"
"insn_rdtsc: rdtsc;ret\n\t"
+ "insn_cr3_load: mov %rax,%cr3;ret\n\t"
+ "insn_cr3_store: mov %cr3,%rax;ret\n\t"
+#ifdef __x86_64__
+ "insn_cr8_load: mov %rax,%cr8;ret\n\t"
+ "insn_cr8_store: mov %cr8,%rax;ret\n\t"
+#endif
"insn_monitor: monitor;ret\n\t"
"insn_pause: pause;ret\n\t"
"insn_wbinvd: wbinvd;ret\n\t"
@@ -840,6 +846,12 @@ extern void insn_invlpg();
extern void insn_mwait();
extern void insn_rdpmc();
extern void insn_rdtsc();
+extern void insn_cr3_load();
+extern void insn_cr3_store();
+#ifdef __x86_64__
+extern void insn_cr8_load();
+extern void insn_cr8_store();
+#endif
extern void insn_monitor();
extern void insn_pause();
extern void insn_wbinvd();
@@ -856,7 +868,7 @@ struct insn_table {
u32 reason;
ulong exit_qual;
u32 insn_info;
- // Use FIELD_EXIT_QUAL and FIELD_INSN_INFO to efines
+ // Use FIELD_EXIT_QUAL and FIELD_INSN_INFO to define
// which field need to be tested, reason is always tested
u32 test_field;
};
@@ -877,6 +889,16 @@ static struct insn_table insn_table[] = {
{"MWAIT", CPU_MWAIT, insn_mwait, INSN_CPU0, 36, 0, 0, 0},
{"RDPMC", CPU_RDPMC, insn_rdpmc, INSN_CPU0, 15, 0, 0, 0},
{"RDTSC", CPU_RDTSC, insn_rdtsc, INSN_CPU0, 16, 0, 0, 0},
+ {"CR3 load", CPU_CR3_LOAD, insn_cr3_load, INSN_CPU0, 28, 0x3, 0,
+ FIELD_EXIT_QUAL},
+ {"CR3 store", CPU_CR3_STORE, insn_cr3_store, INSN_CPU0, 28, 0x13, 0,
+ FIELD_EXIT_QUAL},
+#ifdef __x86_64__
+ {"CR8 load", CPU_CR8_LOAD, insn_cr8_load, INSN_CPU0, 28, 0x8, 0,
+ FIELD_EXIT_QUAL},
+ {"CR8 store", CPU_CR8_STORE, insn_cr8_store, INSN_CPU0, 28, 0x18, 0,
+ FIELD_EXIT_QUAL},
+#endif
{"MONITOR", CPU_MONITOR, insn_monitor, INSN_CPU0, 39, 0, 0, 0},
{"PAUSE", CPU_PAUSE, insn_pause, INSN_CPU0, 40, 0, 0, 0},
// Flags for Secondary Processor-Based VM-Execution Controls
@@ -894,6 +916,10 @@ static int insn_intercept_init()
ctrl_cpu[0] = vmcs_read(CPU_EXEC_CTRL0);
ctrl_cpu[0] |= CPU_HLT | CPU_INVLPG | CPU_MWAIT | CPU_RDPMC | CPU_RDTSC |
+ CPU_CR3_LOAD | CPU_CR3_STORE |
+#ifdef __x86_64__
+ CPU_CR8_LOAD | CPU_CR8_STORE |
+#endif
CPU_MONITOR | CPU_PAUSE | CPU_SECONDARY;
ctrl_cpu[0] &= ctrl_cpu_rev[0].clr;
vmcs_write(CPU_EXEC_CTRL0, ctrl_cpu[0]);
--
1.8.1.1.298.ge7eed54
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