Remove obsolete cmd-line options and code associated with
these. The mux-vcpus option may return at some point, given it's utility in finding bhyve (and FreeBSD) bugs. Approved by: re@ (blanket) Discussed with: neel@
This commit is contained in:
Peter Grehan
parent
3a2092bad0
commit
94c3b3bffc
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=256062
@ -41,7 +41,6 @@ __FBSDID("$FreeBSD$");
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#include <unistd.h>
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#include <assert.h>
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#include <errno.h>
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#include <signal.h>
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#include <pthread.h>
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#include <pthread_np.h>
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@ -61,9 +60,6 @@ __FBSDID("$FreeBSD$");
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#include "spinup_ap.h"
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#include "rtc.h"
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#define DEFAULT_GUEST_HZ 100
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#define DEFAULT_GUEST_TSLICE 200
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#define GUEST_NIO_PORT 0x488 /* guest upcalls via i/o port */
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#define VMEXIT_SWITCH 0 /* force vcpu switch in mux mode */
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@ -77,14 +73,11 @@ __FBSDID("$FreeBSD$");
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typedef int (*vmexit_handler_t)(struct vmctx *, struct vm_exit *, int *vcpu);
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int guest_tslice = DEFAULT_GUEST_TSLICE;
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int guest_hz = DEFAULT_GUEST_HZ;
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char *vmname;
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int guest_ncpus;
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static int pincpu = -1;
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static int guest_vcpu_mux;
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static int guest_vmexit_on_hlt, guest_vmexit_on_pause, disable_x2apic;
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static int foundcpus;
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@ -102,7 +95,7 @@ static void vm_loop(struct vmctx *ctx, int vcpu, uint64_t rip);
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struct vm_exit vmexit[VM_MAXCPU];
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struct fbsdstats {
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struct bhyvestats {
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uint64_t vmexit_bogus;
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uint64_t vmexit_bogus_switch;
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uint64_t vmexit_hlt;
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@ -125,28 +118,24 @@ usage(int code)
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{
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fprintf(stderr,
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"Usage: %s [-aehABHIP][-g <gdb port>][-z <hz>][-s <pci>]"
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"[-S <pci>][-p pincpu][-n <pci>][-m lowmem][-M highmem]"
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"Usage: %s [-aehAHIP][-g <gdb port>][-s <pci>][-S <pci>]"
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"[-c vcpus][-p pincpu][-m mem]"
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" <vmname>\n"
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" -a: local apic is in XAPIC mode (default is X2APIC)\n"
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" -A: create an ACPI table\n"
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" -g: gdb port (default is %d and 0 means don't open)\n"
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" -c: # cpus (default 1)\n"
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" -p: pin vcpu 'n' to host cpu 'pincpu + n'\n"
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" -B: inject breakpoint exception on vm entry\n"
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" -H: vmexit from the guest on hlt\n"
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" -I: present an ioapic to the guest\n"
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" -P: vmexit from the guest on pause\n"
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" -e: exit on unhandled i/o access\n"
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" -h: help\n"
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" -z: guest hz (default is %d)\n"
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" -s: <slot,driver,configinfo> PCI slot config\n"
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" -S: <slot,driver,configinfo> legacy PCI slot config\n"
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" -m: memory size in MB\n"
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" -x: mux vcpus to 1 hcpu\n"
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" -t: mux vcpu timeslice hz (default %d)\n",
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progname, DEFAULT_GDB_PORT, DEFAULT_GUEST_HZ,
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DEFAULT_GUEST_TSLICE);
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" -m: memory size in MB\n",
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progname, DEFAULT_GDB_PORT);
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exit(code);
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}
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@ -178,13 +167,6 @@ fbsdrun_vmexit_on_hlt(void)
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return (guest_vmexit_on_hlt);
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}
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int
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fbsdrun_muxed(void)
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{
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return (guest_vcpu_mux);
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}
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static void *
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fbsdrun_start_thread(void *param)
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{
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@ -226,7 +208,7 @@ fbsdrun_addcpu(struct vmctx *ctx, int vcpu, uint64_t rip)
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vmexit[vcpu].rip = rip;
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vmexit[vcpu].inst_length = 0;
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if (vcpu == BSP || !guest_vcpu_mux){
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if (vcpu == BSP) {
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mt_vmm_info[vcpu].mt_ctx = ctx;
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mt_vmm_info[vcpu].mt_vcpu = vcpu;
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@ -264,17 +246,10 @@ static int
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vmexit_handle_notify(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu,
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uint32_t eax)
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{
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#if PG_DEBUG /* put all types of debug here */
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if (eax == 0) {
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pause_noswitch = 1;
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} else if (eax == 1) {
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pause_noswitch = 0;
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} else {
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pause_noswitch = 0;
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if (eax == 5) {
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vm_set_capability(ctx, *pvcpu, VM_CAP_MTRAP_EXIT, 1);
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}
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}
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#if BHYVE_DEBUG
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/*
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* put guest-driven debug here
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*/
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#endif
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return (VMEXIT_CONTINUE);
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}
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@ -337,11 +312,6 @@ vmexit_wrmsr(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu)
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newcpu = emulate_wrmsr(ctx, *pvcpu, vme->u.msr.code,vme->u.msr.wval);
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if (guest_vcpu_mux && *pvcpu != newcpu) {
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retval = VMEXIT_SWITCH;
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*pvcpu = newcpu;
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}
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return (retval);
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}
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@ -354,11 +324,6 @@ vmexit_spinup_ap(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu)
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newcpu = spinup_ap(ctx, *pvcpu,
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vme->u.spinup_ap.vcpu, vme->u.spinup_ap.rip);
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if (guest_vcpu_mux && *pvcpu != newcpu) {
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retval = VMEXIT_SWITCH;
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*pvcpu = newcpu;
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}
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return (retval);
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}
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@ -378,58 +343,42 @@ vmexit_vmx(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
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return (VMEXIT_ABORT);
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}
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static int bogus_noswitch = 1;
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static int
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vmexit_bogus(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
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{
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stats.vmexit_bogus++;
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if (!guest_vcpu_mux || guest_ncpus == 1 || bogus_noswitch) {
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return (VMEXIT_RESTART);
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} else {
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stats.vmexit_bogus_switch++;
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vmexit->inst_length = 0;
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*pvcpu = -1;
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return (VMEXIT_SWITCH);
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}
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return (VMEXIT_RESTART);
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}
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static int
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vmexit_hlt(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
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{
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stats.vmexit_hlt++;
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if (fbsdrun_muxed()) {
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*pvcpu = -1;
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return (VMEXIT_SWITCH);
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} else {
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/*
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* Just continue execution with the next instruction. We use
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* the HLT VM exit as a way to be friendly with the host
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* scheduler.
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*/
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return (VMEXIT_CONTINUE);
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}
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}
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static int pause_noswitch;
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stats.vmexit_hlt++;
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/*
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* Just continue execution with the next instruction. We use
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* the HLT VM exit as a way to be friendly with the host
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* scheduler.
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*/
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return (VMEXIT_CONTINUE);
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}
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static int
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vmexit_pause(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
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{
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stats.vmexit_pause++;
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if (fbsdrun_muxed() && !pause_noswitch) {
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*pvcpu = -1;
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return (VMEXIT_SWITCH);
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} else {
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return (VMEXIT_CONTINUE);
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}
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return (VMEXIT_CONTINUE);
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}
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static int
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vmexit_mtrap(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
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{
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stats.vmexit_mtrap++;
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return (VMEXIT_RESTART);
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@ -460,39 +409,6 @@ vmexit_paging(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
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return (VMEXIT_CONTINUE);
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}
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static void
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sigalrm(int sig)
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{
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return;
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}
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static void
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setup_timeslice(void)
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{
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struct sigaction sa;
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struct itimerval itv;
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int error;
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/*
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* Setup a realtime timer to generate a SIGALRM at a
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* frequency of 'guest_tslice' ticks per second.
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*/
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = 0;
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sa.sa_handler = sigalrm;
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error = sigaction(SIGALRM, &sa, NULL);
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assert(error == 0);
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itv.it_interval.tv_sec = 0;
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itv.it_interval.tv_usec = 1000000 / guest_tslice;
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itv.it_value.tv_sec = 0;
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itv.it_value.tv_usec = 1000000 / guest_tslice;
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error = setitimer(ITIMER_REAL, &itv, NULL);
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assert(error == 0);
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}
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static vmexit_handler_t handler[VM_EXITCODE_MAX] = {
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[VM_EXITCODE_INOUT] = vmexit_inout,
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[VM_EXITCODE_VMX] = vmexit_vmx,
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@ -511,9 +427,6 @@ vm_loop(struct vmctx *ctx, int vcpu, uint64_t rip)
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int error, rc, prevcpu;
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enum vm_exitcode exitcode;
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if (guest_vcpu_mux)
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setup_timeslice();
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if (pincpu >= 0) {
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CPU_ZERO(&mask);
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CPU_SET(pincpu + vcpu, &mask);
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@ -550,15 +463,6 @@ vm_loop(struct vmctx *ctx, int vcpu, uint64_t rip)
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rc = (*handler[exitcode])(ctx, &vmexit[vcpu], &vcpu);
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switch (rc) {
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case VMEXIT_SWITCH:
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assert(guest_vcpu_mux);
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if (vcpu == -1) {
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stats.cpu_switch_rotate++;
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vcpu = fbsdrun_get_next_cpu(prevcpu);
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} else {
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stats.cpu_switch_direct++;
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}
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/* fall through */
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case VMEXIT_CONTINUE:
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rip = vmexit[vcpu].rip + vmexit[vcpu].inst_length;
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break;
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@ -594,21 +498,20 @@ num_vcpus_allowed(struct vmctx *ctx)
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int
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main(int argc, char *argv[])
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{
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int c, error, gdb_port, inject_bkpt, tmp, err, ioapic, bvmcons;
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int c, error, gdb_port, tmp, err, ioapic, bvmcons;
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int max_vcpus;
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struct vmctx *ctx;
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uint64_t rip;
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size_t memsize;
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bvmcons = 0;
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inject_bkpt = 0;
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progname = basename(argv[0]);
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gdb_port = DEFAULT_GDB_PORT;
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guest_ncpus = 1;
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ioapic = 0;
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memsize = 256 * MB;
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while ((c = getopt(argc, argv, "abehABHIPxp:g:c:z:s:S:n:m:")) != -1) {
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while ((c = getopt(argc, argv, "abehAHIPp:g:c:s:S:m:")) != -1) {
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switch (c) {
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case 'a':
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disable_x2apic = 1;
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@ -619,12 +522,6 @@ main(int argc, char *argv[])
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case 'b':
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bvmcons = 1;
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break;
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case 'B':
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inject_bkpt = 1;
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break;
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case 'x':
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guest_vcpu_mux = 1;
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break;
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case 'p':
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pincpu = atoi(optarg);
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break;
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@ -634,12 +531,6 @@ main(int argc, char *argv[])
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case 'g':
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gdb_port = atoi(optarg);
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break;
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case 'z':
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guest_hz = atoi(optarg);
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break;
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case 't':
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guest_tslice = atoi(optarg);
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break;
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case 's':
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if (pci_parse_slot(optarg, 0) != 0)
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exit(1);
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@ -677,16 +568,6 @@ main(int argc, char *argv[])
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if (argc != 1)
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usage(1);
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/* No need to mux if guest is uni-processor */
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if (guest_ncpus <= 1)
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guest_vcpu_mux = 0;
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/* vmexit on hlt if guest is muxed */
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if (guest_vcpu_mux) {
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guest_vmexit_on_hlt = 1;
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guest_vmexit_on_pause = 1;
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}
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vmname = argv[0];
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ctx = vm_open(vmname);
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@ -765,11 +646,6 @@ main(int argc, char *argv[])
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error = vm_get_register(ctx, BSP, VM_REG_GUEST_RIP, &rip);
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assert(error == 0);
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if (inject_bkpt) {
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error = vm_inject_event(ctx, BSP, VM_HW_EXCEPTION, IDT_BP);
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assert(error == 0);
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}
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/*
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* build the guest tables, MP etc.
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*/
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@ -36,8 +36,6 @@
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#endif
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struct vmctx;
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extern int guest_hz;
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extern int guest_tslice;
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extern int guest_ncpus;
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extern char *vmname;
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@ -153,10 +153,10 @@ pit_update_counter(struct counter *c, int latch)
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* of the program.
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*
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* If the counter's initial value is not programmed we
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* assume a value that would be set to generate 'guest_hz'
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* assume a value that would be set to generate 100
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* interrupts per second.
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*/
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c->initial = TIMER_DIV(PIT_8254_FREQ, guest_hz);
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c->initial = TIMER_DIV(PIT_8254_FREQ, 100);
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gettimeofday(&c->tv, NULL);
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}
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