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linux-sg2042
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ARM fixes: 

- A bug in handling of SPE state for non-vhe systems
 - A fix for a crash on system shutdown
 - Three timer fixes, introduced by the timer optimizations for v4.15
 
 x86 fixes:
 - fix for a WARN that was introduced in 4.15
 - fix for SMM when guest uses PCID
 - fixes for several bugs found by syzkaller
 
 ... and a dozen papercut fixes for the kvm_stat tool.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "ARM fixes:
   - A bug in handling of SPE state for non-vhe systems
   - A fix for a crash on system shutdown
   - Three timer fixes, introduced by the timer optimizations for v4.15

  x86 fixes:
   - fix for a WARN that was introduced in 4.15
   - fix for SMM when guest uses PCID
   - fixes for several bugs found by syzkaller

  ... and a dozen papercut fixes for the kvm_stat tool"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (22 commits)
  tools/kvm_stat: sort '-f help' output
  kvm: x86: fix RSM when PCID is non-zero
  KVM: Fix stack-out-of-bounds read in write_mmio
  KVM: arm/arm64: Fix timer enable flow
  KVM: arm/arm64: Properly handle arch-timer IRQs after vtimer_save_state
  KVM: arm/arm64: timer: Don't set irq as forwarded if no usable GIC
  KVM: arm/arm64: Fix HYP unmapping going off limits
  arm64: kvm: Prevent restoring stale PMSCR_EL1 for vcpu
  KVM/x86: Check input paging mode when cs.l is set
  tools/kvm_stat: add line for totals
  tools/kvm_stat: stop ignoring unhandled arguments
  tools/kvm_stat: suppress usage information on command line errors
  tools/kvm_stat: handle invalid regular expressions
  tools/kvm_stat: add hint on '-f help' to man page
  tools/kvm_stat: fix child trace events accounting
  tools/kvm_stat: fix extra handling of 'help' with fields filter
  tools/kvm_stat: fix missing field update after filter change
  tools/kvm_stat: fix drilldown in events-by-guests mode
  tools/kvm_stat: fix command line option '-g'
  kvm: x86: fix WARN due to uninitialized guest FPU state
  ...
This commit is contained in:
Linus Torvalds 2017-12-21 10:44:13 -08:00
parent d1ce8ceb8b aa12f594f9
commit 409232a450
12 changed files with 151 additions and 85 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm64/kvm/hyp/debug-sr.c
View File

@ -74,6 +74,9 @@ static void __hyp_text __debug_save_spe_nvhe(u64 *pmscr_el1)
{
u64 reg;
/* Clear pmscr in case of early return */
*pmscr_el1 = 0;
/* SPE present on this CPU? */
if (!cpuid_feature_extract_unsigned_field(read_sysreg(id_aa64dfr0_el1),
ID_AA64DFR0_PMSVER_SHIFT))

32
arch/x86/kvm/emulate.c
View File

@ -2390,9 +2390,21 @@ static int rsm_load_seg_64(struct x86_emulate_ctxt *ctxt, u64 smbase, int n)
}
static int rsm_enter_protected_mode(struct x86_emulate_ctxt *ctxt,
u64 cr0, u64 cr4)
u64 cr0, u64 cr3, u64 cr4)
{
int bad;
u64 pcid;
/* In order to later set CR4.PCIDE, CR3[11:0] must be zero. */
pcid = 0;
if (cr4 & X86_CR4_PCIDE) {
pcid = cr3 & 0xfff;
cr3 &= ~0xfff;
}
bad = ctxt->ops->set_cr(ctxt, 3, cr3);
if (bad)
return X86EMUL_UNHANDLEABLE;
/*
* First enable PAE, long mode needs it before CR0.PG = 1 is set.
@ -2411,6 +2423,12 @@ static int rsm_enter_protected_mode(struct x86_emulate_ctxt *ctxt,
bad = ctxt->ops->set_cr(ctxt, 4, cr4);
if (bad)
return X86EMUL_UNHANDLEABLE;
if (pcid) {
bad = ctxt->ops->set_cr(ctxt, 3, cr3 | pcid);
if (bad)
return X86EMUL_UNHANDLEABLE;
}
}
return X86EMUL_CONTINUE;
@ -2421,11 +2439,11 @@ static int rsm_load_state_32(struct x86_emulate_ctxt *ctxt, u64 smbase)
struct desc_struct desc;
struct desc_ptr dt;
u16 selector;
u32 val, cr0, cr4;
u32 val, cr0, cr3, cr4;
int i;
cr0 = GET_SMSTATE(u32, smbase, 0x7ffc);
ctxt->ops->set_cr(ctxt, 3, GET_SMSTATE(u32, smbase, 0x7ff8));
cr3 = GET_SMSTATE(u32, smbase, 0x7ff8);
ctxt->eflags = GET_SMSTATE(u32, smbase, 0x7ff4) | X86_EFLAGS_FIXED;
ctxt->_eip = GET_SMSTATE(u32, smbase, 0x7ff0);
@ -2467,14 +2485,14 @@ static int rsm_load_state_32(struct x86_emulate_ctxt *ctxt, u64 smbase)
ctxt->ops->set_smbase(ctxt, GET_SMSTATE(u32, smbase, 0x7ef8));
return rsm_enter_protected_mode(ctxt, cr0, cr4);
return rsm_enter_protected_mode(ctxt, cr0, cr3, cr4);
}
static int rsm_load_state_64(struct x86_emulate_ctxt *ctxt, u64 smbase)
{
struct desc_struct desc;
struct desc_ptr dt;
u64 val, cr0, cr4;
u64 val, cr0, cr3, cr4;
u32 base3;
u16 selector;
int i, r;
@ -2491,7 +2509,7 @@ static int rsm_load_state_64(struct x86_emulate_ctxt *ctxt, u64 smbase)
ctxt->ops->set_dr(ctxt, 7, (val & DR7_VOLATILE) | DR7_FIXED_1);
cr0 = GET_SMSTATE(u64, smbase, 0x7f58);
ctxt->ops->set_cr(ctxt, 3, GET_SMSTATE(u64, smbase, 0x7f50));
cr3 = GET_SMSTATE(u64, smbase, 0x7f50);
cr4 = GET_SMSTATE(u64, smbase, 0x7f48);
ctxt->ops->set_smbase(ctxt, GET_SMSTATE(u32, smbase, 0x7f00));
val = GET_SMSTATE(u64, smbase, 0x7ed0);
@ -2519,7 +2537,7 @@ static int rsm_load_state_64(struct x86_emulate_ctxt *ctxt, u64 smbase)
dt.address = GET_SMSTATE(u64, smbase, 0x7e68);
ctxt->ops->set_gdt(ctxt, &dt);
r = rsm_enter_protected_mode(ctxt, cr0, cr4);
r = rsm_enter_protected_mode(ctxt, cr0, cr3, cr4);
if (r != X86EMUL_CONTINUE)
return r;

8
arch/x86/kvm/mmu.c
View File

@ -3395,7 +3395,7 @@ static int mmu_alloc_direct_roots(struct kvm_vcpu *vcpu)
spin_lock(&vcpu->kvm->mmu_lock);
if(make_mmu_pages_available(vcpu) < 0) {
spin_unlock(&vcpu->kvm->mmu_lock);
return 1;
return -ENOSPC;
}
sp = kvm_mmu_get_page(vcpu, 0, 0,
vcpu->arch.mmu.shadow_root_level, 1, ACC_ALL);
@ -3410,7 +3410,7 @@ static int mmu_alloc_direct_roots(struct kvm_vcpu *vcpu)
spin_lock(&vcpu->kvm->mmu_lock);
if (make_mmu_pages_available(vcpu) < 0) {
spin_unlock(&vcpu->kvm->mmu_lock);
return 1;
return -ENOSPC;
}
sp = kvm_mmu_get_page(vcpu, i << (30 - PAGE_SHIFT),
i << 30, PT32_ROOT_LEVEL, 1, ACC_ALL);
@ -3450,7 +3450,7 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu)
spin_lock(&vcpu->kvm->mmu_lock);
if (make_mmu_pages_available(vcpu) < 0) {
spin_unlock(&vcpu->kvm->mmu_lock);
return 1;
return -ENOSPC;
}
sp = kvm_mmu_get_page(vcpu, root_gfn, 0,
vcpu->arch.mmu.shadow_root_level, 0, ACC_ALL);
@ -3487,7 +3487,7 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu)
spin_lock(&vcpu->kvm->mmu_lock);
if (make_mmu_pages_available(vcpu) < 0) {
spin_unlock(&vcpu->kvm->mmu_lock);
return 1;
return -ENOSPC;
}
sp = kvm_mmu_get_page(vcpu, root_gfn, i << 30, PT32_ROOT_LEVEL,
0, ACC_ALL);

48
arch/x86/kvm/x86.c
View File

@ -4384,7 +4384,7 @@ static int vcpu_mmio_read(struct kvm_vcpu *vcpu, gpa_t addr, int len, void *v)
addr, n, v))
&& kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, n, v))
break;
trace_kvm_mmio(KVM_TRACE_MMIO_READ, n, addr, *(u64 *)v);
trace_kvm_mmio(KVM_TRACE_MMIO_READ, n, addr, v);
handled += n;
addr += n;
len -= n;
@ -4643,7 +4643,7 @@ static int read_prepare(struct kvm_vcpu *vcpu, void *val, int bytes)
{
if (vcpu->mmio_read_completed) {
trace_kvm_mmio(KVM_TRACE_MMIO_READ, bytes,
vcpu->mmio_fragments[0].gpa, *(u64 *)val);
vcpu->mmio_fragments[0].gpa, val);
vcpu->mmio_read_completed = 0;
return 1;
}
@ -4665,14 +4665,14 @@ static int write_emulate(struct kvm_vcpu *vcpu, gpa_t gpa,
static int write_mmio(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes, void *val)
{
trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, bytes, gpa, *(u64 *)val);
trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, bytes, gpa, val);
return vcpu_mmio_write(vcpu, gpa, bytes, val);
}
static int read_exit_mmio(struct kvm_vcpu *vcpu, gpa_t gpa,
void *val, int bytes)
{
trace_kvm_mmio(KVM_TRACE_MMIO_READ_UNSATISFIED, bytes, gpa, 0);
trace_kvm_mmio(KVM_TRACE_MMIO_READ_UNSATISFIED, bytes, gpa, NULL);
return X86EMUL_IO_NEEDED;
}
@ -7264,13 +7264,12 @@ static int complete_emulated_mmio(struct kvm_vcpu *vcpu)
int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
struct fpu *fpu = &current->thread.fpu;
int r;
fpu__initialize(fpu);
kvm_sigset_activate(vcpu);
kvm_load_guest_fpu(vcpu);
if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
if (kvm_run->immediate_exit) {
r = -EINTR;
@ -7296,14 +7295,12 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
}
}
kvm_load_guest_fpu(vcpu);
if (unlikely(vcpu->arch.complete_userspace_io)) {
int (*cui)(struct kvm_vcpu *) = vcpu->arch.complete_userspace_io;
vcpu->arch.complete_userspace_io = NULL;
r = cui(vcpu);
if (r <= 0)
goto out_fpu;
goto out;
} else
WARN_ON(vcpu->arch.pio.count || vcpu->mmio_needed);
@ -7312,9 +7309,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
else
r = vcpu_run(vcpu);
out_fpu:
kvm_put_guest_fpu(vcpu);
out:
kvm_put_guest_fpu(vcpu);
post_kvm_run_save(vcpu);
kvm_sigset_deactivate(vcpu);
@ -7384,7 +7380,7 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
#endif
kvm_rip_write(vcpu, regs->rip);
kvm_set_rflags(vcpu, regs->rflags);
kvm_set_rflags(vcpu, regs->rflags | X86_EFLAGS_FIXED);
vcpu->arch.exception.pending = false;
@ -7498,6 +7494,29 @@ int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
}
EXPORT_SYMBOL_GPL(kvm_task_switch);
int kvm_valid_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
{
if ((sregs->efer & EFER_LME) && (sregs->cr0 & X86_CR0_PG_BIT)) {
/*
* When EFER.LME and CR0.PG are set, the processor is in
* 64-bit mode (though maybe in a 32-bit code segment).
* CR4.PAE and EFER.LMA must be set.
*/
if (!(sregs->cr4 & X86_CR4_PAE_BIT)
|| !(sregs->efer & EFER_LMA))
return -EINVAL;
} else {
/*
* Not in 64-bit mode: EFER.LMA is clear and the code
* segment cannot be 64-bit.
*/
if (sregs->efer & EFER_LMA || sregs->cs.l)
return -EINVAL;
}
return 0;
}
int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
struct kvm_sregs *sregs)
{
@ -7510,6 +7529,9 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
(sregs->cr4 & X86_CR4_OSXSAVE))
return -EINVAL;
if (kvm_valid_sregs(vcpu, sregs))
return -EINVAL;
apic_base_msr.data = sregs->apic_base;
apic_base_msr.host_initiated = true;
if (kvm_set_apic_base(vcpu, &apic_base_msr))

2
include/kvm/arm_arch_timer.h
View File

@ -62,7 +62,7 @@ struct arch_timer_cpu {
bool enabled;
};
int kvm_timer_hyp_init(void);
int kvm_timer_hyp_init(bool);
int kvm_timer_enable(struct kvm_vcpu *vcpu);
int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu);
void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu);

7
include/trace/events/kvm.h
View File

@ -211,7 +211,7 @@ TRACE_EVENT(kvm_ack_irq,
{ KVM_TRACE_MMIO_WRITE, "write" }
TRACE_EVENT(kvm_mmio,
TP_PROTO(int type, int len, u64 gpa, u64 val),
TP_PROTO(int type, int len, u64 gpa, void *val),
TP_ARGS(type, len, gpa, val),
TP_STRUCT__entry(
@ -225,7 +225,10 @@ TRACE_EVENT(kvm_mmio,
__entry->type = type;
__entry->len = len;
__entry->gpa = gpa;
__entry->val = val;
__entry->val = 0;
if (val)
memcpy(&__entry->val, val,
min_t(u32, sizeof(__entry->val), len));
),
TP_printk("mmio %s len %u gpa 0x%llx val 0x%llx",

74
tools/kvm/kvm_stat/kvm_stat
View File

@ -478,7 +478,7 @@ class Provider(object):
@staticmethod
def is_field_wanted(fields_filter, field):
"""Indicate whether field is valid according to fields_filter."""
if not fields_filter or fields_filter == "help":
if not fields_filter:
return True
return re.match(fields_filter, field) is not None
@ -549,8 +549,8 @@ class TracepointProvider(Provider):
def update_fields(self, fields_filter):
"""Refresh fields, applying fields_filter"""
self._fields = [field for field in self.get_available_fields()
if self.is_field_wanted(fields_filter, field)]
self.fields = [field for field in self.get_available_fields()
if self.is_field_wanted(fields_filter, field)]
@staticmethod
def get_online_cpus():
@ -950,7 +950,8 @@ class Tui(object):
curses.nocbreak()
curses.endwin()
def get_all_gnames(self):
@staticmethod
def get_all_gnames():
"""Returns a list of (pid, gname) tuples of all running guests"""
res = []
try:
@ -963,7 +964,7 @@ class Tui(object):
# perform a sanity check before calling the more expensive
# function to possibly extract the guest name
if ' -name ' in line[1]:
res.append((line[0], self.get_gname_from_pid(line[0])))
res.append((line[0], Tui.get_gname_from_pid(line[0])))
child.stdout.close()
return res
@ -984,7 +985,8 @@ class Tui(object):
except Exception:
self.screen.addstr(row + 1, 2, 'Not available')
def get_pid_from_gname(self, gname):
@staticmethod
def get_pid_from_gname(gname):
"""Fuzzy function to convert guest name to QEMU process pid.
Returns a list of potential pids, can be empty if no match found.
@ -992,7 +994,7 @@ class Tui(object):
"""
pids = []
for line in self.get_all_gnames():
for line in Tui.get_all_gnames():
if gname == line[1]:
pids.append(int(line[0]))
@ -1090,15 +1092,16 @@ class Tui(object):
# sort by totals
return (0, -stats[x][0])
total = 0.
for val in stats.values():
total += val[0]
for key in stats.keys():
if key.find('(') is -1:
total += stats[key][0]
if self._sorting == SORT_DEFAULT:
sortkey = sortCurAvg
else:
sortkey = sortTotal
tavg = 0
for key in sorted(stats.keys(), key=sortkey):
if row >= self.screen.getmaxyx()[0]:
if row >= self.screen.getmaxyx()[0] - 1:
break
values = stats[key]
if not values[0] and not values[1]:
@ -1110,9 +1113,15 @@ class Tui(object):
self.screen.addstr(row, 1, '%-40s %10d%7.1f %8s' %
(key, values[0], values[0] * 100 / total,
cur))
if cur is not '' and key.find('(') is -1:
tavg += cur
row += 1
if row == 3:
self.screen.addstr(4, 1, 'No matching events reported yet')
else:
self.screen.addstr(row, 1, '%-40s %10d %8s' %
('Total', total, tavg if tavg else ''),
curses.A_BOLD)
self.screen.refresh()
def show_msg(self, text):
@ -1358,7 +1367,7 @@ class Tui(object):
if char == 'x':
self.update_drilldown()
# prevents display of current values on next refresh
self.stats.get()
self.stats.get(self._display_guests)
except KeyboardInterrupt:
break
except curses.error:
@ -1451,16 +1460,13 @@ Press any other key to refresh statistics immediately.
try:
pids = Tui.get_pid_from_gname(val)
except:
raise optparse.OptionValueError('Error while searching for guest '
'"{}", use "-p" to specify a pid '
'instead'.format(val))
sys.exit('Error while searching for guest "{}". Use "-p" to '
'specify a pid instead?'.format(val))
if len(pids) == 0:
raise optparse.OptionValueError('No guest by the name "{}" '
'found'.format(val))
sys.exit('Error: No guest by the name "{}" found'.format(val))
if len(pids) > 1:
raise optparse.OptionValueError('Multiple processes found (pids: '
'{}) - use "-p" to specify a pid '
'instead'.format(" ".join(pids)))
sys.exit('Error: Multiple processes found (pids: {}). Use "-p" '
'to specify the desired pid'.format(" ".join(pids)))
parser.values.pid = pids[0]
optparser = optparse.OptionParser(description=description_text,
@ -1518,7 +1524,16 @@ Press any other key to refresh statistics immediately.
help='restrict statistics to guest by name',
callback=cb_guest_to_pid,
)
(options, _) = optparser.parse_args(sys.argv)
options, unkn = optparser.parse_args(sys.argv)
if len(unkn) != 1:
sys.exit('Error: Extra argument(s): ' + ' '.join(unkn[1:]))
try:
# verify that we were passed a valid regex up front
re.compile(options.fields)
except re.error:
sys.exit('Error: "' + options.fields + '" is not a valid regular '
'expression')
return options
@ -1564,16 +1579,13 @@ def main():
stats = Stats(options)
if options.fields == "help":
event_list = "\n"
s = stats.get()
for key in s.keys():
if key.find('(') != -1:
key = key[0:key.find('(')]
if event_list.find('\n' + key + '\n') == -1:
event_list += key + '\n'
sys.stdout.write(event_list)
return ""
if options.fields == 'help':
stats.fields_filter = None
event_list = []
for key in stats.get().keys():
event_list.append(key.split('(', 1)[0])
sys.stdout.write(' ' + '\n '.join(sorted(set(event_list))) + '\n')
sys.exit(0)
if options.log:
log(stats)

4
tools/kvm/kvm_stat/kvm_stat.txt
View File

@ -50,6 +50,8 @@ INTERACTIVE COMMANDS
*s*:: set update interval
*x*:: toggle reporting of stats for child trace events
:: *Note*: The stats for the parents summarize the respective child trace
events
Press any other key to refresh statistics immediately.
@ -86,7 +88,7 @@ OPTIONS
-f<fields>::
--fields=<fields>::
fields to display (regex)
fields to display (regex), "-f help" for a list of available events
-h::
--help::

40
virt/kvm/arm/arch_timer.c
View File

@ -92,16 +92,23 @@ static irqreturn_t kvm_arch_timer_handler(int irq, void *dev_id)
{
struct kvm_vcpu *vcpu = *(struct kvm_vcpu **)dev_id;
struct arch_timer_context *vtimer;
u32 cnt_ctl;
/*
* We may see a timer interrupt after vcpu_put() has been called which
* sets the CPU's vcpu pointer to NULL, because even though the timer
* has been disabled in vtimer_save_state(), the hardware interrupt
* signal may not have been retired from the interrupt controller yet.
*/
if (!vcpu)
return IRQ_HANDLED;
if (!vcpu) {
pr_warn_once("Spurious arch timer IRQ on non-VCPU thread\n");
return IRQ_NONE;
}
vtimer = vcpu_vtimer(vcpu);
if (!vtimer->irq.level) {
vtimer->cnt_ctl = read_sysreg_el0(cntv_ctl);
if (kvm_timer_irq_can_fire(vtimer))
cnt_ctl = read_sysreg_el0(cntv_ctl);
cnt_ctl &= ARCH_TIMER_CTRL_ENABLE | ARCH_TIMER_CTRL_IT_STAT |
ARCH_TIMER_CTRL_IT_MASK;
if (cnt_ctl == (ARCH_TIMER_CTRL_ENABLE | ARCH_TIMER_CTRL_IT_STAT))
kvm_timer_update_irq(vcpu, true, vtimer);
}
@ -355,6 +362,7 @@ static void vtimer_save_state(struct kvm_vcpu *vcpu)
/* Disable the virtual timer */
write_sysreg_el0(0, cntv_ctl);
isb();
vtimer->loaded = false;
out:
@ -720,7 +728,7 @@ static int kvm_timer_dying_cpu(unsigned int cpu)
return 0;
}
int kvm_timer_hyp_init(void)
int kvm_timer_hyp_init(bool has_gic)
{
struct arch_timer_kvm_info *info;
int err;
@ -756,10 +764,13 @@ int kvm_timer_hyp_init(void)
return err;
}
err = irq_set_vcpu_affinity(host_vtimer_irq, kvm_get_running_vcpus());
if (err) {
kvm_err("kvm_arch_timer: error setting vcpu affinity\n");
goto out_free_irq;
if (has_gic) {
err = irq_set_vcpu_affinity(host_vtimer_irq,
kvm_get_running_vcpus());
if (err) {
kvm_err("kvm_arch_timer: error setting vcpu affinity\n");
goto out_free_irq;
}
}
kvm_info("virtual timer IRQ%d\n", host_vtimer_irq);
@ -835,10 +846,7 @@ int kvm_timer_enable(struct kvm_vcpu *vcpu)
no_vgic:
preempt_disable();
timer->enabled = 1;
if (!irqchip_in_kernel(vcpu->kvm))
kvm_timer_vcpu_load_user(vcpu);
else
kvm_timer_vcpu_load_vgic(vcpu);
kvm_timer_vcpu_load(vcpu);
preempt_enable();
return 0;

2
virt/kvm/arm/arm.c
View File

@ -1326,7 +1326,7 @@ static int init_subsystems(void)
/*
* Init HYP architected timer support
*/
err = kvm_timer_hyp_init();
err = kvm_timer_hyp_init(vgic_present);
if (err)
goto out;

6
virt/kvm/arm/mmio.c
View File

@ -112,7 +112,7 @@ int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run)
}
trace_kvm_mmio(KVM_TRACE_MMIO_READ, len, run->mmio.phys_addr,
data);
&data);
data = vcpu_data_host_to_guest(vcpu, data, len);
vcpu_set_reg(vcpu, vcpu->arch.mmio_decode.rt, data);
}
@ -182,14 +182,14 @@ int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
data = vcpu_data_guest_to_host(vcpu, vcpu_get_reg(vcpu, rt),
len);
trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, len, fault_ipa, data);
trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, len, fault_ipa, &data);
kvm_mmio_write_buf(data_buf, len, data);
ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, fault_ipa, len,
data_buf);
} else {
trace_kvm_mmio(KVM_TRACE_MMIO_READ_UNSATISFIED, len,
fault_ipa, 0);
fault_ipa, NULL);
ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, fault_ipa, len,
data_buf);

10
virt/kvm/arm/mmu.c
View File

@ -509,8 +509,6 @@ static void unmap_hyp_range(pgd_t *pgdp, phys_addr_t start, u64 size)
*/
void free_hyp_pgds(void)
{
unsigned long addr;
mutex_lock(&kvm_hyp_pgd_mutex);
if (boot_hyp_pgd) {
@ -521,10 +519,10 @@ void free_hyp_pgds(void)
if (hyp_pgd) {
unmap_hyp_range(hyp_pgd, hyp_idmap_start, PAGE_SIZE);
for (addr = PAGE_OFFSET; virt_addr_valid(addr); addr += PGDIR_SIZE)
unmap_hyp_range(hyp_pgd, kern_hyp_va(addr), PGDIR_SIZE);
for (addr = VMALLOC_START; is_vmalloc_addr((void*)addr); addr += PGDIR_SIZE)
unmap_hyp_range(hyp_pgd, kern_hyp_va(addr), PGDIR_SIZE);
unmap_hyp_range(hyp_pgd, kern_hyp_va(PAGE_OFFSET),
(uintptr_t)high_memory - PAGE_OFFSET);
unmap_hyp_range(hyp_pgd, kern_hyp_va(VMALLOC_START),
VMALLOC_END - VMALLOC_START);
free_pages((unsigned long)hyp_pgd, hyp_pgd_order);
hyp_pgd = NULL;