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diff --git a/sys/dev/hwpmc/hwpmc_core.c b/sys/dev/hwpmc/hwpmc_core.c
--- a/sys/dev/hwpmc/hwpmc_core.c
+++ b/sys/dev/hwpmc/hwpmc_core.c
@@ -261,8 +261,8 @@
if ((cpu_stdext_feature3 & CPUID_STDEXT3_TSXFA) != 0 &&
!pmc_tsx_force_abort_set) {
pmc_tsx_force_abort_set = true;
- x86_msr_op(MSR_TSX_FORCE_ABORT, MSR_OP_RENDEZVOUS |
- MSR_OP_WRITE, 1);
+ x86_msr_op(MSR_TSX_FORCE_ABORT, MSR_OP_RENDEZVOUS_ALL |
+ MSR_OP_WRITE, 1, NULL);
}
flags = 0;
@@ -403,8 +403,8 @@
MPASS(pmc_alloc_refs > 0);
if (pmc_alloc_refs-- == 1 && pmc_tsx_force_abort_set) {
pmc_tsx_force_abort_set = false;
- x86_msr_op(MSR_TSX_FORCE_ABORT, MSR_OP_RENDEZVOUS |
- MSR_OP_WRITE, 0);
+ x86_msr_op(MSR_TSX_FORCE_ABORT, MSR_OP_RENDEZVOUS_ALL |
+ MSR_OP_WRITE, 0, NULL);
}
return (0);
diff --git a/sys/x86/include/x86_var.h b/sys/x86/include/x86_var.h
--- a/sys/x86/include/x86_var.h
+++ b/sys/x86/include/x86_var.h
@@ -154,12 +154,24 @@
int minidumpsys(struct dumperinfo *);
struct pcb *get_pcb_td(struct thread *td);
+/*
+ * MSR ops for x86_msr_op()
+ */
#define MSR_OP_ANDNOT 0x00000001
#define MSR_OP_OR 0x00000002
#define MSR_OP_WRITE 0x00000003
+#define MSR_OP_READ 0x00000004
+
+/*
+ * Where and which execution mode
+ */
#define MSR_OP_LOCAL 0x10000000
-#define MSR_OP_SCHED 0x20000000
-#define MSR_OP_RENDEZVOUS 0x30000000
-void x86_msr_op(u_int msr, u_int op, uint64_t arg1);
+#define MSR_OP_SCHED_ALL 0x20000000
+#define MSR_OP_SCHED_ONE 0x30000000
+#define MSR_OP_RENDEZVOUS_ALL 0x40000000
+#define MSR_OP_RENDEZVOUS_ONE 0x50000000
+#define MSR_OP_CPUID(id) ((id) << 8)
+
+void x86_msr_op(u_int msr, u_int op, uint64_t arg1, uint64_t *res);
#endif
diff --git a/sys/x86/x86/cpu_machdep.c b/sys/x86/x86/cpu_machdep.c
--- a/sys/x86/x86/cpu_machdep.c
+++ b/sys/x86/x86/cpu_machdep.c
@@ -119,6 +119,7 @@
u_int msr;
int op;
uint64_t arg1;
+ uint64_t *res;
};
static void
@@ -142,33 +143,41 @@
case MSR_OP_WRITE:
wrmsr(a->msr, a->arg1);
break;
+ case MSR_OP_READ:
+ v = rdmsr(a->msr);
+ *a->res = v;
+ break;
}
}
#define MSR_OP_EXMODE_MASK 0xf0000000
#define MSR_OP_OP_MASK 0x000000ff
+#define MSR_OP_GET_CPUID(x) (((x) & ~MSR_OP_EXMODE_MASK) >> 8)
void
-x86_msr_op(u_int msr, u_int op, uint64_t arg1)
+x86_msr_op(u_int msr, u_int op, uint64_t arg1, uint64_t *res)
{
struct thread *td;
struct msr_op_arg a;
+ cpuset_t set;
u_int exmode;
- int bound_cpu, i, is_bound;
+ int bound_cpu, cpu, i, is_bound;
a.op = op & MSR_OP_OP_MASK;
MPASS(a.op == MSR_OP_ANDNOT || a.op == MSR_OP_OR ||
- a.op == MSR_OP_WRITE);
+ a.op == MSR_OP_WRITE || a.op == MSR_OP_READ);
exmode = op & MSR_OP_EXMODE_MASK;
- MPASS(exmode == MSR_OP_LOCAL || exmode == MSR_OP_SCHED ||
- exmode == MSR_OP_RENDEZVOUS);
+ MPASS(exmode == MSR_OP_LOCAL || exmode == MSR_OP_SCHED_ALL ||
+ exmode == MSR_OP_SCHED_ONE || exmode == MSR_OP_RENDEZVOUS_ALL ||
+ exmode == MSR_OP_RENDEZVOUS_ONE);
a.msr = msr;
a.arg1 = arg1;
+ a.res = res;
switch (exmode) {
case MSR_OP_LOCAL:
x86_msr_op_one(&a);
break;
- case MSR_OP_SCHED:
+ case MSR_OP_SCHED_ALL:
td = curthread;
thread_lock(td);
is_bound = sched_is_bound(td);
@@ -183,8 +192,32 @@
sched_unbind(td);
thread_unlock(td);
break;
- case MSR_OP_RENDEZVOUS:
- smp_rendezvous(NULL, x86_msr_op_one, NULL, &a);
+ case MSR_OP_SCHED_ONE:
+ td = curthread;
+ cpu = MSR_OP_GET_CPUID(op);
+ thread_lock(td);
+ is_bound = sched_is_bound(td);
+ bound_cpu = td->td_oncpu;
+ if (!is_bound || bound_cpu != cpu)
+ sched_bind(td, cpu);
+ x86_msr_op_one(&a);
+ if (is_bound) {
+ if (bound_cpu != cpu)
+ sched_bind(td, bound_cpu);
+ } else {
+ sched_unbind(td);
+ }
+ thread_unlock(td);
+ break;
+ case MSR_OP_RENDEZVOUS_ALL:
+ smp_rendezvous(smp_no_rendezvous_barrier, x86_msr_op_one,
+ smp_no_rendezvous_barrier, &a);
+ break;
+ case MSR_OP_RENDEZVOUS_ONE:
+ cpu = MSR_OP_GET_CPUID(op);
+ CPU_SETOF(cpu, &set);
+ smp_rendezvous_cpus(set, smp_no_rendezvous_barrier,
+ x86_msr_op_one, smp_no_rendezvous_barrier, &a);
break;
}
}
@@ -872,9 +905,9 @@
{
if ((cpu_ia32_arch_caps & IA32_ARCH_CAP_IBRS_ALL) != 0) {
x86_msr_op(MSR_IA32_SPEC_CTRL, (for_all_cpus ?
- MSR_OP_RENDEZVOUS : MSR_OP_LOCAL) |
+ MSR_OP_RENDEZVOUS_ALL : MSR_OP_LOCAL) |
(hw_ibrs_disable != 0 ? MSR_OP_ANDNOT : MSR_OP_OR),
- IA32_SPEC_CTRL_IBRS);
+ IA32_SPEC_CTRL_IBRS, NULL);
hw_ibrs_active = hw_ibrs_disable == 0;
hw_ibrs_ibpb_active = 0;
} else {
@@ -930,7 +963,8 @@
hw_ssb_active = enable;
x86_msr_op(MSR_IA32_SPEC_CTRL,
(enable ? MSR_OP_OR : MSR_OP_ANDNOT) |
- (for_all_cpus ? MSR_OP_SCHED : MSR_OP_LOCAL), IA32_SPEC_CTRL_SSBD);
+ (for_all_cpus ? MSR_OP_SCHED_ALL : MSR_OP_LOCAL),
+ IA32_SPEC_CTRL_SSBD, NULL);
}
void
@@ -1221,8 +1255,9 @@
x86_msr_op(MSR_IA32_TSX_CTRL,
(enable ? MSR_OP_OR : MSR_OP_ANDNOT) |
- (all ? MSR_OP_RENDEZVOUS : MSR_OP_LOCAL),
- IA32_TSX_CTRL_RTM_DISABLE | IA32_TSX_CTRL_TSX_CPUID_CLEAR);
+ (all ? MSR_OP_RENDEZVOUS_ALL : MSR_OP_LOCAL),
+ IA32_TSX_CTRL_RTM_DISABLE | IA32_TSX_CTRL_TSX_CPUID_CLEAR,
+ NULL);
}
void
@@ -1386,8 +1421,8 @@
return;
x86_msr_op(MSR_IA32_MCU_OPT_CTRL,
(x86_rngds_mitg_enable ? MSR_OP_OR : MSR_OP_ANDNOT) |
- (all_cpus ? MSR_OP_RENDEZVOUS : MSR_OP_LOCAL),
- IA32_RNGDS_MITG_DIS);
+ (all_cpus ? MSR_OP_RENDEZVOUS_ALL : MSR_OP_LOCAL),
+ IA32_RNGDS_MITG_DIS, NULL);
}
static int

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