Merge branch 'kvm-updates-2.6.27' of git://git.kernel.org/pub/scm/lin…

…ux/kernel/git/avi/kvm

* 'kvm-updates-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (70 commits)
  KVM: Adjust smp_call_function_mask() callers to new requirements
  KVM: MMU: Fix potential race setting upper shadow ptes on nonpae hosts
  KVM: x86 emulator: emulate clflush
  KVM: MMU: improve invalid shadow root page handling
  KVM: MMU: nuke shadowed pgtable pages and ptes on memslot destruction
  KVM: Prefix some x86 low level function with kvm_, to avoid namespace issues
  KVM: check injected pic irq within valid pic irqs
  KVM: x86 emulator: Fix HLT instruction
  KVM: Apply the kernel sigmask to vcpus blocked due to being uninitialized
  KVM: VMX: Add ept_sync_context in flush_tlb
  KVM: mmu_shrink: kvm_mmu_zap_page requires slots_lock to be held
  x86: KVM guest: make kvm_smp_prepare_boot_cpu() static
  KVM: SVM: fix suspend/resume support
  KVM: s390: rename private structures
  KVM: s390: Set guest storage limit and offset to sane values
  KVM: Fix memory leak on guest exit
  KVM: s390: dont allocate dirty bitmap
  KVM: move slots_lock acquision down to vapic_exit
  KVM: VMX: Fake emulate Intel perfctr MSRs
  KVM: VMX: Fix a wrong usage of vmcs_config
  ...

arch/ia64/kvm/Makefile

@@ -43,7 +43,8 @@ $(obj)/$(offsets-file): arch/ia64/kvm/asm-offsets.s
 EXTRA_CFLAGS += -Ivirt/kvm -Iarch/ia64/kvm/
 EXTRA_AFLAGS += -Ivirt/kvm -Iarch/ia64/kvm/
 
-common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o)
+common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o \
+		coalesced_mmio.o)
 
 kvm-objs := $(common-objs) kvm-ia64.o kvm_fw.o
 obj-$(CONFIG_KVM) += kvm.o

arch/ia64/kvm/kvm-ia64.c

@@ -187,6 +187,9 @@ int kvm_dev_ioctl_check_extension(long ext)
 
 		r = 1;
 		break;
+	case KVM_CAP_COALESCED_MMIO:
+		r = KVM_COALESCED_MMIO_PAGE_OFFSET;
+		break;
 	default:
 		r = 0;
 	}
@@ -195,11 +198,11 @@ int kvm_dev_ioctl_check_extension(long ext)
 }
 
 static struct kvm_io_device *vcpu_find_mmio_dev(struct kvm_vcpu *vcpu,
-					gpa_t addr)
+					gpa_t addr, int len, int is_write)
 {
 	struct kvm_io_device *dev;
 
-	dev = kvm_io_bus_find_dev(&vcpu->kvm->mmio_bus, addr);
+	dev = kvm_io_bus_find_dev(&vcpu->kvm->mmio_bus, addr, len, is_write);
 
 	return dev;
 }
@@ -231,7 +234,7 @@ static int handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 	kvm_run->exit_reason = KVM_EXIT_MMIO;
 	return 0;
 mmio:
-	mmio_dev = vcpu_find_mmio_dev(vcpu, p->addr);
+	mmio_dev = vcpu_find_mmio_dev(vcpu, p->addr, p->size, !p->dir);
 	if (mmio_dev) {
 		if (!p->dir)
 			kvm_iodevice_write(mmio_dev, p->addr, p->size,
@@ -1035,14 +1038,6 @@ static void kvm_free_vmm_area(void)
 	}
 }
 
-/*
- * Make sure that a cpu that is being hot-unplugged does not have any vcpus
- * cached on it. Leave it as blank for IA64.
- */
-void decache_vcpus_on_cpu(int cpu)
-{
-}
-
 static void vti_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 {
 }
@@ -1460,6 +1455,9 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
 	return 0;
 }
 
+void kvm_arch_flush_shadow(struct kvm *kvm)
+{
+}
 
 long kvm_arch_dev_ioctl(struct file *filp,
 		unsigned int ioctl, unsigned long arg)

arch/powerpc/kvm/Makefile

@@ -4,7 +4,7 @@
 
 EXTRA_CFLAGS += -Ivirt/kvm -Iarch/powerpc/kvm
 
-common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o)
+common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o)
 
 kvm-objs := $(common-objs) powerpc.o emulate.o booke_guest.o
 obj-$(CONFIG_KVM) += kvm.o

arch/powerpc/kvm/powerpc.c

@@ -145,6 +145,9 @@ int kvm_dev_ioctl_check_extension(long ext)
 	case KVM_CAP_USER_MEMORY:
 		r = 1;
 		break;
+	case KVM_CAP_COALESCED_MMIO:
+		r = KVM_COALESCED_MMIO_PAGE_OFFSET;
+		break;
 	default:
 		r = 0;
 		break;
@@ -167,6 +170,10 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
 	return 0;
 }
 
+void kvm_arch_flush_shadow(struct kvm *kvm)
+{
+}
+
 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
 {
 	struct kvm_vcpu *vcpu;
@@ -240,10 +247,6 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
 {
 }
 
-void decache_vcpus_on_cpu(int cpu)
-{
-}
-
 int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
                                     struct kvm_debug_guest *dbg)
 {

arch/s390/kvm/interrupt.c

@@ -31,7 +31,7 @@ static int psw_interrupts_disabled(struct kvm_vcpu *vcpu)
 }
 
 static int __interrupt_is_deliverable(struct kvm_vcpu *vcpu,
-				      struct interrupt_info *inti)
+				      struct kvm_s390_interrupt_info *inti)
 {
 	switch (inti->type) {
 	case KVM_S390_INT_EMERGENCY:
@@ -91,7 +91,7 @@ static void __set_cpuflag(struct kvm_vcpu *vcpu, u32 flag)
 }
 
 static void __set_intercept_indicator(struct kvm_vcpu *vcpu,
-				      struct interrupt_info *inti)
+				      struct kvm_s390_interrupt_info *inti)
 {
 	switch (inti->type) {
 	case KVM_S390_INT_EMERGENCY:
@@ -111,7 +111,7 @@ static void __set_intercept_indicator(struct kvm_vcpu *vcpu,
 }
 
 static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
-				   struct interrupt_info *inti)
+				   struct kvm_s390_interrupt_info *inti)
 {
 	const unsigned short table[] = { 2, 4, 4, 6 };
 	int rc, exception = 0;
@@ -290,9 +290,9 @@ static int __try_deliver_ckc_interrupt(struct kvm_vcpu *vcpu)
 
 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
 {
-	struct local_interrupt *li = &vcpu->arch.local_int;
-	struct float_interrupt *fi = vcpu->arch.local_int.float_int;
-	struct interrupt_info  *inti;
+	struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
+	struct kvm_s390_float_interrupt *fi = vcpu->arch.local_int.float_int;
+	struct kvm_s390_interrupt_info  *inti;
 	int rc = 0;
 
 	if (atomic_read(&li->active)) {
@@ -408,9 +408,9 @@ void kvm_s390_idle_wakeup(unsigned long data)
 
 void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
 {
-	struct local_interrupt *li = &vcpu->arch.local_int;
-	struct float_interrupt *fi = vcpu->arch.local_int.float_int;
-	struct interrupt_info  *n, *inti = NULL;
+	struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
+	struct kvm_s390_float_interrupt *fi = vcpu->arch.local_int.float_int;
+	struct kvm_s390_interrupt_info  *n, *inti = NULL;
 	int deliver;
 
 	__reset_intercept_indicators(vcpu);
@@ -465,8 +465,8 @@ void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
 
 int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code)
 {
-	struct local_interrupt *li = &vcpu->arch.local_int;
-	struct interrupt_info *inti;
+	struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
+	struct kvm_s390_interrupt_info *inti;
 
 	inti = kzalloc(sizeof(*inti), GFP_KERNEL);
 	if (!inti)
@@ -487,9 +487,9 @@ int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code)
 int kvm_s390_inject_vm(struct kvm *kvm,
 		       struct kvm_s390_interrupt *s390int)
 {
-	struct local_interrupt *li;
-	struct float_interrupt *fi;
-	struct interrupt_info *inti;
+	struct kvm_s390_local_interrupt *li;
+	struct kvm_s390_float_interrupt *fi;
+	struct kvm_s390_interrupt_info *inti;
 	int sigcpu;
 
 	inti = kzalloc(sizeof(*inti), GFP_KERNEL);
@@ -544,8 +544,8 @@ int kvm_s390_inject_vm(struct kvm *kvm,
 int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
 			 struct kvm_s390_interrupt *s390int)
 {
-	struct local_interrupt *li;
-	struct interrupt_info *inti;
+	struct kvm_s390_local_interrupt *li;
+	struct kvm_s390_interrupt_info *inti;
 
 	inti = kzalloc(sizeof(*inti), GFP_KERNEL);
 	if (!inti)

arch/s390/kvm/kvm-s390.c

@@ -79,10 +79,6 @@ void kvm_arch_hardware_disable(void *garbage)
 {
 }
 
-void decache_vcpus_on_cpu(int cpu)
-{
-}
-
 int kvm_arch_hardware_setup(void)
 {
 	return 0;
@@ -198,6 +194,7 @@ struct kvm *kvm_arch_create_vm(void)
 void kvm_arch_destroy_vm(struct kvm *kvm)
 {
 	debug_unregister(kvm->arch.dbf);
+	kvm_free_physmem(kvm);
 	free_page((unsigned long)(kvm->arch.sca));
 	kfree(kvm);
 	module_put(THIS_MODULE);
@@ -250,11 +247,16 @@ static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu)
 	vcpu->arch.sie_block->gbea = 1;
 }
 
+/* The current code can have up to 256 pages for virtio */
+#define VIRTIODESCSPACE (256ul * 4096ul)
+
 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
 {
 	atomic_set(&vcpu->arch.sie_block->cpuflags, CPUSTAT_ZARCH);
-	vcpu->arch.sie_block->gmslm = 0xffffffffffUL;
-	vcpu->arch.sie_block->gmsor = 0x000000000000;
+	vcpu->arch.sie_block->gmslm = vcpu->kvm->arch.guest_memsize +
+				      vcpu->kvm->arch.guest_origin +
+				      VIRTIODESCSPACE - 1ul;
+	vcpu->arch.sie_block->gmsor = vcpu->kvm->arch.guest_origin;
 	vcpu->arch.sie_block->ecb   = 2;
 	vcpu->arch.sie_block->eca   = 0xC1002001U;
 	setup_timer(&vcpu->arch.ckc_timer, kvm_s390_idle_wakeup,
@@ -273,7 +275,8 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
 	if (!vcpu)
 		goto out_nomem;
 
-	vcpu->arch.sie_block = (struct sie_block *) get_zeroed_page(GFP_KERNEL);
+	vcpu->arch.sie_block = (struct kvm_s390_sie_block *)
+					get_zeroed_page(GFP_KERNEL);
 
 	if (!vcpu->arch.sie_block)
 		goto out_free_cpu;
@@ -672,6 +675,10 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
 	return 0;
 }
 
+void kvm_arch_flush_shadow(struct kvm *kvm)
+{
+}
+
 gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
 {
 	return gfn;

arch/s390/kvm/priv.c

@@ -199,7 +199,7 @@ static int handle_stidp(struct kvm_vcpu *vcpu)
 
 static void handle_stsi_3_2_2(struct kvm_vcpu *vcpu, struct sysinfo_3_2_2 *mem)
 {
-	struct float_interrupt *fi = &vcpu->kvm->arch.float_int;
+	struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
 	int cpus = 0;
 	int n;
 

arch/s390/kvm/sigp.c

@@ -45,7 +45,7 @@
 
 static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr, u64 *reg)
 {
-	struct float_interrupt *fi = &vcpu->kvm->arch.float_int;
+	struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
 	int rc;
 
 	if (cpu_addr >= KVM_MAX_VCPUS)
@@ -71,9 +71,9 @@ static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr, u64 *reg)
 
 static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr)
 {
-	struct float_interrupt *fi = &vcpu->kvm->arch.float_int;
-	struct local_interrupt *li;
-	struct interrupt_info *inti;
+	struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
+	struct kvm_s390_local_interrupt *li;
+	struct kvm_s390_interrupt_info *inti;
 	int rc;
 
 	if (cpu_addr >= KVM_MAX_VCPUS)
@@ -108,9 +108,9 @@ static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr)
 
 static int __sigp_stop(struct kvm_vcpu *vcpu, u16 cpu_addr, int store)
 {
-	struct float_interrupt *fi = &vcpu->kvm->arch.float_int;
-	struct local_interrupt *li;
-	struct interrupt_info *inti;
+	struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
+	struct kvm_s390_local_interrupt *li;
+	struct kvm_s390_interrupt_info *inti;
 	int rc;
 
 	if (cpu_addr >= KVM_MAX_VCPUS)
@@ -169,9 +169,9 @@ static int __sigp_set_arch(struct kvm_vcpu *vcpu, u32 parameter)
 static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
 			     u64 *reg)
 {
-	struct float_interrupt *fi = &vcpu->kvm->arch.float_int;
-	struct local_interrupt *li;
-	struct interrupt_info *inti;
+	struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
+	struct kvm_s390_local_interrupt *li;
+	struct kvm_s390_interrupt_info *inti;
 	int rc;
 	u8 tmp;
 

arch/x86/kernel/kvmclock.c

@@ -113,7 +113,7 @@ static void kvm_setup_secondary_clock(void)
 #endif
 
 #ifdef CONFIG_SMP
-void __init kvm_smp_prepare_boot_cpu(void)
+static void __init kvm_smp_prepare_boot_cpu(void)
 {
 	WARN_ON(kvm_register_clock("primary cpu clock"));
 	native_smp_prepare_boot_cpu();

arch/x86/kvm/Makefile

@@ -2,7 +2,8 @@
 # Makefile for Kernel-based Virtual Machine module
 #
 
-common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o)
+common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o \
+                coalesced_mmio.o)
 ifeq ($(CONFIG_KVM_TRACE),y)
 common-objs += $(addprefix ../../../virt/kvm/, kvm_trace.o)
 endif