svn commit: r339826 - in head: sys/amd64/vmm/intel usr.sbin/bhyve
Yuri Pankov
yuripv at FreeBSD.org
Sat Oct 27 21:24:30 UTC 2018
Author: yuripv
Date: Sat Oct 27 21:24:28 2018
New Revision: 339826
URL: https://svnweb.freebsd.org/changeset/base/339826
Log:
Provide basic descriptions for VMX exit reason (from "Intel 64 and IA-32
Architectures Software Developer’s Manual Volume 3"). Add the document
to SEE ALSO in bhyve.8 (and pet manlint here a bit).
Reviewed by: jhb, rgrimes, 0mp
Approved by: kib (mentor)
Differential Revision: https://reviews.freebsd.org/D17531
Modified:
head/sys/amd64/vmm/intel/vmcs.h
head/usr.sbin/bhyve/bhyve.8
head/usr.sbin/bhyve/bhyverun.c
Modified: head/sys/amd64/vmm/intel/vmcs.h
==============================================================================
--- head/sys/amd64/vmm/intel/vmcs.h Sat Oct 27 21:17:01 2018 (r339825)
+++ head/sys/amd64/vmm/intel/vmcs.h Sat Oct 27 21:24:28 2018 (r339826)
@@ -338,6 +338,14 @@ vmcs_write(uint32_t encoding, uint64_t val)
#define EXIT_REASON_WBINVD 54
#define EXIT_REASON_XSETBV 55
#define EXIT_REASON_APIC_WRITE 56
+#define EXIT_REASON_RDRAND 57
+#define EXIT_REASON_INVPCID 58
+#define EXIT_REASON_VMFUNC 59
+#define EXIT_REASON_ENCLS 60
+#define EXIT_REASON_RDSEED 61
+#define EXIT_REASON_PM_LOG_FULL 62
+#define EXIT_REASON_XSAVES 63
+#define EXIT_REASON_XRSTORS 64
/*
* NMI unblocking due to IRET.
Modified: head/usr.sbin/bhyve/bhyve.8
==============================================================================
--- head/usr.sbin/bhyve/bhyve.8 Sat Oct 27 21:17:01 2018 (r339825)
+++ head/usr.sbin/bhyve/bhyve.8 Sat Oct 27 21:24:28 2018 (r339826)
@@ -367,7 +367,11 @@ Emergency write is advertised, but no-op at present.
.Pp
Framebuffer devices:
.Bl -tag -width 10n
-.It Oo rfb= Ns Oo Ar IP: Oc Ns Ar port Oc Ns Oo ,w= Ns Ar width Oc Ns Oo ,h= Ns Ar height Oc Ns Oo ,vga= Ns Ar vgaconf Oc Ns Oo Ns ,wait Oc Ns Oo ,password= Ns Ar password Oc
+.It Xo
+.Oo rfb= Ns Oo Ar IP\&: Oc Ns Ar port Oc Ns Oo ,w= Ns Ar width Oc Ns Oo ,h= Ns
+.Ar height Oc Ns Oo ,vga= Ns Ar vgaconf Oc Ns Oo Ns ,wait Oc Ns Oo ,password= Ns
+.Ar password Oc
+.Xc
.Bl -tag -width 8n
.It Ar IPv4:port No or Ar [IPv6%zone]:port
An
@@ -398,8 +402,8 @@ and memory space
.Pq 64KB at Ad 0xA0000 .
The default
.Dq io
-option should be used for guests that attempt to issue BIOS
-calls which result in I/O port queries, and fail to boot if I/O decode is disabled.
+option should be used for guests that attempt to issue BIOS calls which result
+in I/O port queries, and fail to boot if I/O decode is disabled.
.Pp
The
.Dq on
@@ -424,8 +428,8 @@ for configuration notes of particular guests.
.It wait
Instruct
.Nm
-to only boot upon the initiation of a VNC connection, simplifying the installation
-of operating systems that require immediate keyboard input.
+to only boot upon the initiation of a VNC connection, simplifying the
+installation of operating systems that require immediate keyboard input.
This can be removed for post-installation use.
.It password
This type of authentication is known to be cryptographically weak and is not
@@ -497,8 +501,9 @@ General purpose registers can be queried for each virt
registers such as floating-point and system registers cannot be queried.
.Ss Memory
Memory (including memory mapped I/O regions) can be read by the debugger,
-but not written. Memory operations use virtual addresses that are resolved
-to physical addresses via the current virtual CPU's active address translation.
+but not written.
+Memory operations use virtual addresses that are resolved to physical addresses
+via the current virtual CPU's active address translation.
.Ss Control
The running guest can be interrupted by the debugger at any time
.Pq for example, by pressing Ctrl-C in the debugger .
@@ -609,6 +614,12 @@ bhyve -c 2 -m 4G -w -H \\
.Xr ethers 5 ,
.Xr bhyvectl 8 ,
.Xr bhyveload 8
+.Pp
+.Rs
+.%A Intel
+.%B 64 and IA-32 Architectures Software Developer’s Manual
+.%V Volume 3
+.Re
.Sh HISTORY
.Nm
first appeared in
Modified: head/usr.sbin/bhyve/bhyverun.c
==============================================================================
--- head/usr.sbin/bhyve/bhyverun.c Sat Oct 27 21:17:01 2018 (r339825)
+++ head/usr.sbin/bhyve/bhyverun.c Sat Oct 27 21:24:28 2018 (r339826)
@@ -38,6 +38,8 @@ __FBSDID("$FreeBSD$");
#include <sys/mman.h>
#include <sys/time.h>
+#include <amd64/vmm/intel/vmcs.h>
+
#include <machine/atomic.h>
#include <machine/segments.h>
@@ -89,6 +91,73 @@ __FBSDID("$FreeBSD$");
#define MB (1024UL * 1024)
#define GB (1024UL * MB)
+static const char * const vmx_exit_reason_desc[] = {
+ [EXIT_REASON_EXCEPTION] = "Exception or non-maskable interrupt (NMI)",
+ [EXIT_REASON_EXT_INTR] = "External interrupt",
+ [EXIT_REASON_TRIPLE_FAULT] = "Triple fault",
+ [EXIT_REASON_INIT] = "INIT signal",
+ [EXIT_REASON_SIPI] = "Start-up IPI (SIPI)",
+ [EXIT_REASON_IO_SMI] = "I/O system-management interrupt (SMI)",
+ [EXIT_REASON_SMI] = "Other SMI",
+ [EXIT_REASON_INTR_WINDOW] = "Interrupt window",
+ [EXIT_REASON_NMI_WINDOW] = "NMI window",
+ [EXIT_REASON_TASK_SWITCH] = "Task switch",
+ [EXIT_REASON_CPUID] = "CPUID",
+ [EXIT_REASON_GETSEC] = "GETSEC",
+ [EXIT_REASON_HLT] = "HLT",
+ [EXIT_REASON_INVD] = "INVD",
+ [EXIT_REASON_INVLPG] = "INVLPG",
+ [EXIT_REASON_RDPMC] = "RDPMC",
+ [EXIT_REASON_RDTSC] = "RDTSC",
+ [EXIT_REASON_RSM] = "RSM",
+ [EXIT_REASON_VMCALL] = "VMCALL",
+ [EXIT_REASON_VMCLEAR] = "VMCLEAR",
+ [EXIT_REASON_VMLAUNCH] = "VMLAUNCH",
+ [EXIT_REASON_VMPTRLD] = "VMPTRLD",
+ [EXIT_REASON_VMPTRST] = "VMPTRST",
+ [EXIT_REASON_VMREAD] = "VMREAD",
+ [EXIT_REASON_VMRESUME] = "VMRESUME",
+ [EXIT_REASON_VMWRITE] = "VMWRITE",
+ [EXIT_REASON_VMXOFF] = "VMXOFF",
+ [EXIT_REASON_VMXON] = "VMXON",
+ [EXIT_REASON_CR_ACCESS] = "Control-register accesses",
+ [EXIT_REASON_DR_ACCESS] = "MOV DR",
+ [EXIT_REASON_INOUT] = "I/O instruction",
+ [EXIT_REASON_RDMSR] = "RDMSR",
+ [EXIT_REASON_WRMSR] = "WRMSR",
+ [EXIT_REASON_INVAL_VMCS] =
+ "VM-entry failure due to invalid guest state",
+ [EXIT_REASON_INVAL_MSR] = "VM-entry failure due to MSR loading",
+ [EXIT_REASON_MWAIT] = "MWAIT",
+ [EXIT_REASON_MTF] = "Monitor trap flag",
+ [EXIT_REASON_MONITOR] = "MONITOR",
+ [EXIT_REASON_PAUSE] = "PAUSE",
+ [EXIT_REASON_MCE_DURING_ENTRY] =
+ "VM-entry failure due to machine-check event",
+ [EXIT_REASON_TPR] = "TPR below threshold",
+ [EXIT_REASON_APIC_ACCESS] = "APIC access",
+ [EXIT_REASON_VIRTUALIZED_EOI] = "Virtualized EOI",
+ [EXIT_REASON_GDTR_IDTR] = "Access to GDTR or IDTR",
+ [EXIT_REASON_LDTR_TR] = "Access to LDTR or TR",
+ [EXIT_REASON_EPT_FAULT] = "EPT violation",
+ [EXIT_REASON_EPT_MISCONFIG] = "EPT misconfiguration",
+ [EXIT_REASON_INVEPT] = "INVEPT",
+ [EXIT_REASON_RDTSCP] = "RDTSCP",
+ [EXIT_REASON_VMX_PREEMPT] = "VMX-preemption timer expired",
+ [EXIT_REASON_INVVPID] = "INVVPID",
+ [EXIT_REASON_WBINVD] = "WBINVD",
+ [EXIT_REASON_XSETBV] = "XSETBV",
+ [EXIT_REASON_APIC_WRITE] = "APIC write",
+ [EXIT_REASON_RDRAND] = "RDRAND",
+ [EXIT_REASON_INVPCID] = "INVPCID",
+ [EXIT_REASON_VMFUNC] = "VMFUNC",
+ [EXIT_REASON_ENCLS] = "ENCLS",
+ [EXIT_REASON_RDSEED] = "RDSEED",
+ [EXIT_REASON_PM_LOG_FULL] = "Page-modification log full",
+ [EXIT_REASON_XSAVES] = "XSAVES",
+ [EXIT_REASON_XRSTORS] = "XRSTORS"
+};
+
typedef int (*vmexit_handler_t)(struct vmctx *, struct vm_exit *, int *vcpu);
extern int vmexit_task_switch(struct vmctx *, struct vm_exit *, int *vcpu);
@@ -506,14 +575,22 @@ vmexit_spinup_ap(struct vmctx *ctx, struct vm_exit *vm
#define DEBUG_EPT_MISCONFIG
#ifdef DEBUG_EPT_MISCONFIG
-#define EXIT_REASON_EPT_MISCONFIG 49
#define VMCS_GUEST_PHYSICAL_ADDRESS 0x00002400
-#define VMCS_IDENT(x) ((x) | 0x80000000)
static uint64_t ept_misconfig_gpa, ept_misconfig_pte[4];
static int ept_misconfig_ptenum;
#endif
+static const char *
+vmexit_vmx_desc(uint32_t exit_reason)
+{
+
+ if (exit_reason >= nitems(vmx_exit_reason_desc) ||
+ vmx_exit_reason_desc[exit_reason] == NULL)
+ return ("Unknown");
+ return (vmx_exit_reason_desc[exit_reason]);
+}
+
static int
vmexit_vmx(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
{
@@ -523,7 +600,8 @@ vmexit_vmx(struct vmctx *ctx, struct vm_exit *vmexit,
fprintf(stderr, "\trip\t\t0x%016lx\n", vmexit->rip);
fprintf(stderr, "\tinst_length\t%d\n", vmexit->inst_length);
fprintf(stderr, "\tstatus\t\t%d\n", vmexit->u.vmx.status);
- fprintf(stderr, "\texit_reason\t%u\n", vmexit->u.vmx.exit_reason);
+ fprintf(stderr, "\texit_reason\t%u (%s)\n", vmexit->u.vmx.exit_reason,
+ vmexit_vmx_desc(vmexit->u.vmx.exit_reason));
fprintf(stderr, "\tqualification\t0x%016lx\n",
vmexit->u.vmx.exit_qualification);
fprintf(stderr, "\tinst_type\t\t%d\n", vmexit->u.vmx.inst_type);
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