From: Hatim Muhammed <hatimmohammed369@xxxxxxxxx>
Signed-off-by: Hatim Muhammed <hatimmohammed369@xxxxxxxxx>
---
virt/kvm/kvm_main.c | 66 ++++++++++++++++++++++++---------------------
1 file changed, 36 insertions(+), 30 deletions(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 58d31da8a2f7..2f155614efbe 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -53,7 +53,7 @@
#include <linux/kthread.h>
#include <linux/suspend.h>
-#include <asm/processor.h>
+#include <linux/processor.h>
#include <asm/ioctl.h>
#include <linux/uaccess.h>
@@ -75,23 +75,23 @@ MODULE_LICENSE("GPL");
/* Architectures should define their poll value according to the halt latency */
unsigned int halt_poll_ns = KVM_HALT_POLL_NS_DEFAULT;
-module_param(halt_poll_ns, uint, 0644);
EXPORT_SYMBOL_GPL(halt_poll_ns);
+module_param(halt_poll_ns, uint, 0644);
/* Default doubles per-vcpu halt_poll_ns. */
unsigned int halt_poll_ns_grow = 2;
-module_param(halt_poll_ns_grow, uint, 0644);
EXPORT_SYMBOL_GPL(halt_poll_ns_grow);
+module_param(halt_poll_ns_grow, uint, 0644);
/* The start value to grow halt_poll_ns from */
unsigned int halt_poll_ns_grow_start = 10000; /* 10us */
-module_param(halt_poll_ns_grow_start, uint, 0644);
EXPORT_SYMBOL_GPL(halt_poll_ns_grow_start);
+module_param(halt_poll_ns_grow_start, uint, 0644);
/* Default resets per-vcpu halt_poll_ns . */
unsigned int halt_poll_ns_shrink;
-module_param(halt_poll_ns_shrink, uint, 0644);
EXPORT_SYMBOL_GPL(halt_poll_ns_shrink);
+module_param(halt_poll_ns_shrink, uint, 0644);
/*
* Ordering of locks:
@@ -132,7 +132,10 @@ static long kvm_vcpu_compat_ioctl(struct file *file, unsigned int ioctl,
* passed to a compat task, let the ioctls fail.
*/
static long kvm_no_compat_ioctl(struct file *file, unsigned int ioctl,
- unsigned long arg) { return -EINVAL; }
+ unsigned long arg)
+{
+ return -EINVAL;
+}
static int kvm_no_compat_open(struct inode *inode, struct file *file)
{
@@ -216,7 +219,7 @@ void vcpu_put(struct kvm_vcpu *vcpu)
EXPORT_SYMBOL_GPL(vcpu_put);
/* TODO: merge with kvm_arch_vcpu_should_kick */
-static bool kvm_request_needs_ipi(struct kvm_vcpu *vcpu, unsigned req)
+static bool kvm_request_needs_ipi(struct kvm_vcpu *vcpu, unsigned int req)
{
int mode = kvm_vcpu_exiting_guest_mode(vcpu);
@@ -415,7 +418,7 @@ void *kvm_mmu_memory_cache_alloc(struct kvm_mmu_memory_cache *mc)
}
#endif
-static void kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id)
+static void kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned int id)
{
mutex_init(&vcpu->mutex);
vcpu->cpu = -1;
@@ -2156,7 +2159,7 @@ static int kvm_clear_dirty_log_protect(struct kvm *kvm,
if (log->first_page > memslot->npages ||
log->num_pages > memslot->npages - log->first_page ||
(log->num_pages < memslot->npages - log->first_page && (log->num_pages & 63)))
- return -EINVAL;
+ return -EINVAL;
kvm_arch_sync_dirty_log(kvm, memslot);
@@ -2171,6 +2174,7 @@ static int kvm_clear_dirty_log_protect(struct kvm *kvm,
i++, offset += BITS_PER_LONG) {
unsigned long mask = *dirty_bitmap_buffer++;
atomic_long_t *p = (atomic_long_t *) &dirty_bitmap[i];
+
if (!mask)
continue;
@@ -2181,7 +2185,7 @@ static int kvm_clear_dirty_log_protect(struct kvm *kvm,
* never includes any bits beyond the length of the memslot (if
* the length is not aligned to 64 pages), therefore it is not
* a problem if userspace sets them in log->dirty_bitmap.
- */
+ */
if (mask) {
flush = true;
kvm_arch_mmu_enable_log_dirty_pt_masked(kvm, memslot,
@@ -2477,6 +2481,7 @@ static int hva_to_pfn_remapped(struct vm_area_struct *vma,
* not call the fault handler, so do it here.
*/
bool unlocked = false;
+
r = fixup_user_fault(current->mm, addr,
(write_fault ? FAULT_FLAG_WRITE : 0),
&unlocked);
@@ -2515,7 +2520,7 @@ static int hva_to_pfn_remapped(struct vm_area_struct *vma,
* tail pages of non-compound higher order allocations, which
* would then underflow the refcount when the caller does the
* required put_page. Don't allow those pages here.
- */
+ */
if (!kvm_try_get_pfn(pfn))
r = -EFAULT;
@@ -2904,7 +2909,7 @@ int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, unsigned l
EXPORT_SYMBOL_GPL(kvm_vcpu_read_guest);
static int __kvm_read_guest_atomic(struct kvm_memory_slot *slot, gfn_t gfn,
- void *data, int offset, unsigned long len)
+ void *data, int offset, unsigned long len)
{
int r;
unsigned long addr;
@@ -2933,7 +2938,7 @@ EXPORT_SYMBOL_GPL(kvm_vcpu_read_guest_atomic);
static int __kvm_write_guest_page(struct kvm *kvm,
struct kvm_memory_slot *memslot, gfn_t gfn,
- const void *data, int offset, int len)
+ const void *data, int offset, int len)
{
int r;
unsigned long addr;
@@ -2988,7 +2993,7 @@ int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
EXPORT_SYMBOL_GPL(kvm_write_guest);
int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data,
- unsigned long len)
+ unsigned long len)
{
gfn_t gfn = gpa >> PAGE_SHIFT;
int seg;
@@ -3053,6 +3058,7 @@ int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
gpa_t gpa, unsigned long len)
{
struct kvm_memslots *slots = kvm_memslots(kvm);
+
return __kvm_gfn_to_hva_cache_init(slots, ghc, gpa, len);
}
EXPORT_SYMBOL_GPL(kvm_gfn_to_hva_cache_init);
@@ -3153,8 +3159,8 @@ int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len)
EXPORT_SYMBOL_GPL(kvm_clear_guest);
void mark_page_dirty_in_slot(struct kvm *kvm,
- const struct kvm_memory_slot *memslot,
- gfn_t gfn)
+ const struct kvm_memory_slot *memslot,
+ gfn_t gfn)
{
struct kvm_vcpu *vcpu = kvm_get_running_vcpu();
@@ -3454,7 +3460,7 @@ void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
*/
if (kvm_arch_vcpu_should_kick(vcpu)) {
cpu = READ_ONCE(vcpu->cpu);
- if (cpu != me && (unsigned)cpu < nr_cpu_ids && cpu_online(cpu))
+ if (cpu != me && (unsigned int)cpu < nr_cpu_ids && cpu_online(cpu))
smp_send_reschedule(cpu);
}
out:
@@ -3669,7 +3675,7 @@ static int kvm_vcpu_release(struct inode *inode, struct file *filp)
return 0;
}
-static struct file_operations kvm_vcpu_fops = {
+static const struct file_operations kvm_vcpu_fops = {
.release = kvm_vcpu_release,
.unlocked_ioctl = kvm_vcpu_ioctl,
.mmap = kvm_vcpu_mmap,
@@ -3887,6 +3893,7 @@ static long kvm_vcpu_ioctl(struct file *filp,
switch (ioctl) {
case KVM_RUN: {
struct pid *oldpid;
+
r = -EINVAL;
if (arg)
goto out;
@@ -4720,7 +4727,7 @@ static long kvm_vm_compat_ioctl(struct file *filp,
}
#endif
-static struct file_operations kvm_vm_fops = {
+static const struct file_operations kvm_vm_fops = {
.release = kvm_vm_release,
.unlocked_ioctl = kvm_vm_ioctl,
.llseek = noop_llseek,
@@ -4822,7 +4829,7 @@ static long kvm_dev_ioctl(struct file *filp,
return r;
}
-static struct file_operations kvm_chardev_ops = {
+static const struct file_operations kvm_chardev_ops = {
.unlocked_ioctl = kvm_dev_ioctl,
.llseek = noop_llseek,
KVM_COMPAT(kvm_dev_ioctl),
@@ -5172,9 +5179,8 @@ int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
return 0;
for (i = 0; i < bus->dev_count; i++) {
- if (bus->range[i].dev == dev) {
+ if (bus->range[i].dev == dev)
break;
- }
}
if (i == bus->dev_count)
@@ -5241,8 +5247,8 @@ static int kvm_debugfs_open(struct inode *inode, struct file *file,
/*
* The debugfs files are a reference to the kvm struct which
- * is still valid when kvm_destroy_vm is called. kvm_get_kvm_safe
- * avoids the race between open and the removal of the debugfs directory.
+ * is still valid when kvm_destroy_vm is called. kvm_get_kvm_safe
+ * avoids the race between open and the removal of the debugfs directory.
*/
if (!kvm_get_kvm_safe(stat_data->kvm))
return -ENOENT;
@@ -5366,7 +5372,7 @@ static const struct file_operations stat_fops_per_vm = {
static int vm_stat_get(void *_offset, u64 *val)
{
- unsigned offset = (long)_offset;
+ unsigned int offset = (long)_offset;
struct kvm *kvm;
u64 tmp_val;
@@ -5382,7 +5388,7 @@ static int vm_stat_get(void *_offset, u64 *val)
static int vm_stat_clear(void *_offset, u64 val)
{
- unsigned offset = (long)_offset;
+ unsigned int offset = (long)_offset;
struct kvm *kvm;
if (val)
@@ -5402,7 +5408,7 @@ DEFINE_SIMPLE_ATTRIBUTE(vm_stat_readonly_fops, vm_stat_get, NULL, "%llu\n");
static int vcpu_stat_get(void *_offset, u64 *val)
{
- unsigned offset = (long)_offset;
+ unsigned int offset = (long)_offset;
struct kvm *kvm;
u64 tmp_val;
@@ -5418,7 +5424,7 @@ static int vcpu_stat_get(void *_offset, u64 *val)
static int vcpu_stat_clear(void *_offset, u64 val)
{
- unsigned offset = (long)_offset;
+ unsigned int offset = (long)_offset;
struct kvm *kvm;
if (val)
@@ -5597,7 +5603,7 @@ EXPORT_SYMBOL_GPL(kvm_get_running_vcpu);
*/
struct kvm_vcpu * __percpu *kvm_get_running_vcpus(void)
{
- return &kvm_running_vcpu;
+ return &kvm_running_vcpu;
}
#ifdef CONFIG_GUEST_PERF_EVENTS
@@ -5656,7 +5662,7 @@ static void check_processor_compat(void *data)
*c->ret = kvm_arch_check_processor_compat(c->opaque);
}
-int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
+int kvm_init(void *opaque, unsigned int vcpu_size, unsigned int vcpu_align,
struct module *module)
{
struct kvm_cpu_compat_check c;
--
2.35.1
