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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm into next

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Pull KVM updates from Paolo Bonzini:
 "At over 200 commits, covering almost all supported architectures, this
  was a pretty active cycle for KVM.  Changes include:

   - a lot of s390 changes: optimizations, support for migration, GDB
     support and more

   - ARM changes are pretty small: support for the PSCI 0.2 hypercall
     interface on both the guest and the host (the latter acked by
     Catalin)

   - initial POWER8 and little-endian host support

   - support for running u-boot on embedded POWER targets

   - pretty large changes to MIPS too, completing the userspace
     interface and improving the handling of virtualized timer hardware

   - for x86, a larger set of changes is scheduled for 3.17.  Still, we
     have a few emulator bugfixes and support for running nested
     fully-virtualized Xen guests (para-virtualized Xen guests have
     always worked).  And some optimizations too.

  The only missing architecture here is ia64.  It's not a coincidence
  that support for KVM on ia64 is scheduled for removal in 3.17"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (203 commits)
  KVM: add missing cleanup_srcu_struct
  KVM: PPC: Book3S PR: Rework SLB switching code
  KVM: PPC: Book3S PR: Use SLB entry 0
  KVM: PPC: Book3S HV: Fix machine check delivery to guest
  KVM: PPC: Book3S HV: Work around POWER8 performance monitor bugs
  KVM: PPC: Book3S HV: Make sure we don't miss dirty pages
  KVM: PPC: Book3S HV: Fix dirty map for hugepages
  KVM: PPC: Book3S HV: Put huge-page HPTEs in rmap chain for base address
  KVM: PPC: Book3S HV: Fix check for running inside guest in global_invalidates()
  KVM: PPC: Book3S: Move KVM_REG_PPC_WORT to an unused register number
  KVM: PPC: Book3S: Add ONE_REG register names that were missed
  KVM: PPC: Add CAP to indicate hcall fixes
  KVM: PPC: MPIC: Reset IRQ source private members
  KVM: PPC: Graciously fail broken LE hypercalls
  PPC: ePAPR: Fix hypercall on LE guest
  KVM: PPC: BOOK3S: Remove open coded make_dsisr in alignment handler
  KVM: PPC: BOOK3S: Always use the saved DAR value
  PPC: KVM: Make NX bit available with magic page
  KVM: PPC: Disable NX for old magic page using guests
  KVM: PPC: BOOK3S: HV: Add mixed page-size support for guest
  ...
This commit is contained in:
Linus Torvalds
2014-06-04 08:47:12 -07:00
parent daf342af2f 820b3fcdeb
commit b05d59dfce
133 changed files with 7185 additions and 1753 deletions
Download Patch File Download Diff File Expand all files Collapse all files

183
arch/mips/include/asm/kvm_host.h
View File

@@ -19,6 +19,38 @@
#include <linux/threads.h>
#include <linux/spinlock.h>
/* MIPS KVM register ids */
#define MIPS_CP0_32(_R, _S) \
(KVM_REG_MIPS | KVM_REG_SIZE_U32 | 0x10000 | (8 * (_R) + (_S)))
#define MIPS_CP0_64(_R, _S) \
(KVM_REG_MIPS | KVM_REG_SIZE_U64 | 0x10000 | (8 * (_R) + (_S)))
#define KVM_REG_MIPS_CP0_INDEX MIPS_CP0_32(0, 0)
#define KVM_REG_MIPS_CP0_ENTRYLO0 MIPS_CP0_64(2, 0)
#define KVM_REG_MIPS_CP0_ENTRYLO1 MIPS_CP0_64(3, 0)
#define KVM_REG_MIPS_CP0_CONTEXT MIPS_CP0_64(4, 0)
#define KVM_REG_MIPS_CP0_USERLOCAL MIPS_CP0_64(4, 2)
#define KVM_REG_MIPS_CP0_PAGEMASK MIPS_CP0_32(5, 0)
#define KVM_REG_MIPS_CP0_PAGEGRAIN MIPS_CP0_32(5, 1)
#define KVM_REG_MIPS_CP0_WIRED MIPS_CP0_32(6, 0)
#define KVM_REG_MIPS_CP0_HWRENA MIPS_CP0_32(7, 0)
#define KVM_REG_MIPS_CP0_BADVADDR MIPS_CP0_64(8, 0)
#define KVM_REG_MIPS_CP0_COUNT MIPS_CP0_32(9, 0)
#define KVM_REG_MIPS_CP0_ENTRYHI MIPS_CP0_64(10, 0)
#define KVM_REG_MIPS_CP0_COMPARE MIPS_CP0_32(11, 0)
#define KVM_REG_MIPS_CP0_STATUS MIPS_CP0_32(12, 0)
#define KVM_REG_MIPS_CP0_CAUSE MIPS_CP0_32(13, 0)
#define KVM_REG_MIPS_CP0_EPC MIPS_CP0_64(14, 0)
#define KVM_REG_MIPS_CP0_EBASE MIPS_CP0_64(15, 1)
#define KVM_REG_MIPS_CP0_CONFIG MIPS_CP0_32(16, 0)
#define KVM_REG_MIPS_CP0_CONFIG1 MIPS_CP0_32(16, 1)
#define KVM_REG_MIPS_CP0_CONFIG2 MIPS_CP0_32(16, 2)
#define KVM_REG_MIPS_CP0_CONFIG3 MIPS_CP0_32(16, 3)
#define KVM_REG_MIPS_CP0_CONFIG7 MIPS_CP0_32(16, 7)
#define KVM_REG_MIPS_CP0_XCONTEXT MIPS_CP0_64(20, 0)
#define KVM_REG_MIPS_CP0_ERROREPC MIPS_CP0_64(30, 0)
#define KVM_MAX_VCPUS 1
#define KVM_USER_MEM_SLOTS 8
@@ -372,8 +404,19 @@ struct kvm_vcpu_arch {
u32 io_gpr; /* GPR used as IO source/target */
/* Used to calibrate the virutal count register for the guest */
int32_t host_cp0_count;
struct hrtimer comparecount_timer;
/* Count timer control KVM register */
uint32_t count_ctl;
/* Count bias from the raw time */
uint32_t count_bias;
/* Frequency of timer in Hz */
uint32_t count_hz;
/* Dynamic nanosecond bias (multiple of count_period) to avoid overflow */
s64 count_dyn_bias;
/* Resume time */
ktime_t count_resume;
/* Period of timer tick in ns */
u64 count_period;
/* Bitmask of exceptions that are pending */
unsigned long pending_exceptions;
@@ -394,8 +437,6 @@ struct kvm_vcpu_arch {
uint32_t guest_kernel_asid[NR_CPUS];
struct mm_struct guest_kernel_mm, guest_user_mm;
struct hrtimer comparecount_timer;
int last_sched_cpu;
/* WAIT executed */
@@ -410,6 +451,7 @@ struct kvm_vcpu_arch {
#define kvm_read_c0_guest_context(cop0) (cop0->reg[MIPS_CP0_TLB_CONTEXT][0])
#define kvm_write_c0_guest_context(cop0, val) (cop0->reg[MIPS_CP0_TLB_CONTEXT][0] = (val))
#define kvm_read_c0_guest_userlocal(cop0) (cop0->reg[MIPS_CP0_TLB_CONTEXT][2])
#define kvm_write_c0_guest_userlocal(cop0, val) (cop0->reg[MIPS_CP0_TLB_CONTEXT][2] = (val))
#define kvm_read_c0_guest_pagemask(cop0) (cop0->reg[MIPS_CP0_TLB_PG_MASK][0])
#define kvm_write_c0_guest_pagemask(cop0, val) (cop0->reg[MIPS_CP0_TLB_PG_MASK][0] = (val))
#define kvm_read_c0_guest_wired(cop0) (cop0->reg[MIPS_CP0_TLB_WIRED][0])
@@ -449,15 +491,74 @@ struct kvm_vcpu_arch {
#define kvm_read_c0_guest_errorepc(cop0) (cop0->reg[MIPS_CP0_ERROR_PC][0])
#define kvm_write_c0_guest_errorepc(cop0, val) (cop0->reg[MIPS_CP0_ERROR_PC][0] = (val))
/*
* Some of the guest registers may be modified asynchronously (e.g. from a
* hrtimer callback in hard irq context) and therefore need stronger atomicity
* guarantees than other registers.
*/
static inline void _kvm_atomic_set_c0_guest_reg(unsigned long *reg,
unsigned long val)
{
unsigned long temp;
do {
__asm__ __volatile__(
" .set mips3 \n"
" " __LL "%0, %1 \n"
" or %0, %2 \n"
" " __SC "%0, %1 \n"
" .set mips0 \n"
: "=&r" (temp), "+m" (*reg)
: "r" (val));
} while (unlikely(!temp));
}
static inline void _kvm_atomic_clear_c0_guest_reg(unsigned long *reg,
unsigned long val)
{
unsigned long temp;
do {
__asm__ __volatile__(
" .set mips3 \n"
" " __LL "%0, %1 \n"
" and %0, %2 \n"
" " __SC "%0, %1 \n"
" .set mips0 \n"
: "=&r" (temp), "+m" (*reg)
: "r" (~val));
} while (unlikely(!temp));
}
static inline void _kvm_atomic_change_c0_guest_reg(unsigned long *reg,
unsigned long change,
unsigned long val)
{
unsigned long temp;
do {
__asm__ __volatile__(
" .set mips3 \n"
" " __LL "%0, %1 \n"
" and %0, %2 \n"
" or %0, %3 \n"
" " __SC "%0, %1 \n"
" .set mips0 \n"
: "=&r" (temp), "+m" (*reg)
: "r" (~change), "r" (val & change));
} while (unlikely(!temp));
}
#define kvm_set_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] |= (val))
#define kvm_clear_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] &= ~(val))
#define kvm_set_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] |= (val))
#define kvm_clear_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] &= ~(val))
/* Cause can be modified asynchronously from hardirq hrtimer callback */
#define kvm_set_c0_guest_cause(cop0, val) \
_kvm_atomic_set_c0_guest_reg(&cop0->reg[MIPS_CP0_CAUSE][0], val)
#define kvm_clear_c0_guest_cause(cop0, val) \
_kvm_atomic_clear_c0_guest_reg(&cop0->reg[MIPS_CP0_CAUSE][0], val)
#define kvm_change_c0_guest_cause(cop0, change, val) \
{ \
kvm_clear_c0_guest_cause(cop0, change); \
kvm_set_c0_guest_cause(cop0, ((val) & (change))); \
}
_kvm_atomic_change_c0_guest_reg(&cop0->reg[MIPS_CP0_CAUSE][0], \
change, val)
#define kvm_set_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] |= (val))
#define kvm_clear_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] &= ~(val))
#define kvm_change_c0_guest_ebase(cop0, change, val) \
@@ -468,29 +569,33 @@ struct kvm_vcpu_arch {
struct kvm_mips_callbacks {
int (*handle_cop_unusable) (struct kvm_vcpu *vcpu);
int (*handle_tlb_mod) (struct kvm_vcpu *vcpu);
int (*handle_tlb_ld_miss) (struct kvm_vcpu *vcpu);
int (*handle_tlb_st_miss) (struct kvm_vcpu *vcpu);
int (*handle_addr_err_st) (struct kvm_vcpu *vcpu);
int (*handle_addr_err_ld) (struct kvm_vcpu *vcpu);
int (*handle_syscall) (struct kvm_vcpu *vcpu);
int (*handle_res_inst) (struct kvm_vcpu *vcpu);
int (*handle_break) (struct kvm_vcpu *vcpu);
int (*vm_init) (struct kvm *kvm);
int (*vcpu_init) (struct kvm_vcpu *vcpu);
int (*vcpu_setup) (struct kvm_vcpu *vcpu);
gpa_t(*gva_to_gpa) (gva_t gva);
void (*queue_timer_int) (struct kvm_vcpu *vcpu);
void (*dequeue_timer_int) (struct kvm_vcpu *vcpu);
void (*queue_io_int) (struct kvm_vcpu *vcpu,
struct kvm_mips_interrupt *irq);
void (*dequeue_io_int) (struct kvm_vcpu *vcpu,
struct kvm_mips_interrupt *irq);
int (*irq_deliver) (struct kvm_vcpu *vcpu, unsigned int priority,
uint32_t cause);
int (*irq_clear) (struct kvm_vcpu *vcpu, unsigned int priority,
uint32_t cause);
int (*handle_cop_unusable)(struct kvm_vcpu *vcpu);
int (*handle_tlb_mod)(struct kvm_vcpu *vcpu);
int (*handle_tlb_ld_miss)(struct kvm_vcpu *vcpu);
int (*handle_tlb_st_miss)(struct kvm_vcpu *vcpu);
int (*handle_addr_err_st)(struct kvm_vcpu *vcpu);
int (*handle_addr_err_ld)(struct kvm_vcpu *vcpu);
int (*handle_syscall)(struct kvm_vcpu *vcpu);
int (*handle_res_inst)(struct kvm_vcpu *vcpu);
int (*handle_break)(struct kvm_vcpu *vcpu);
int (*vm_init)(struct kvm *kvm);
int (*vcpu_init)(struct kvm_vcpu *vcpu);
int (*vcpu_setup)(struct kvm_vcpu *vcpu);
gpa_t (*gva_to_gpa)(gva_t gva);
void (*queue_timer_int)(struct kvm_vcpu *vcpu);
void (*dequeue_timer_int)(struct kvm_vcpu *vcpu);
void (*queue_io_int)(struct kvm_vcpu *vcpu,
struct kvm_mips_interrupt *irq);
void (*dequeue_io_int)(struct kvm_vcpu *vcpu,
struct kvm_mips_interrupt *irq);
int (*irq_deliver)(struct kvm_vcpu *vcpu, unsigned int priority,
uint32_t cause);
int (*irq_clear)(struct kvm_vcpu *vcpu, unsigned int priority,
uint32_t cause);
int (*get_one_reg)(struct kvm_vcpu *vcpu,
const struct kvm_one_reg *reg, s64 *v);
int (*set_one_reg)(struct kvm_vcpu *vcpu,
const struct kvm_one_reg *reg, s64 v);
};
extern struct kvm_mips_callbacks *kvm_mips_callbacks;
int kvm_mips_emulation_init(struct kvm_mips_callbacks **install_callbacks);
@@ -609,7 +714,16 @@ extern enum emulation_result kvm_mips_emulate_bp_exc(unsigned long cause,
extern enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu,
struct kvm_run *run);
enum emulation_result kvm_mips_emulate_count(struct kvm_vcpu *vcpu);
uint32_t kvm_mips_read_count(struct kvm_vcpu *vcpu);
void kvm_mips_write_count(struct kvm_vcpu *vcpu, uint32_t count);
void kvm_mips_write_compare(struct kvm_vcpu *vcpu, uint32_t compare);
void kvm_mips_init_count(struct kvm_vcpu *vcpu);
int kvm_mips_set_count_ctl(struct kvm_vcpu *vcpu, s64 count_ctl);
int kvm_mips_set_count_resume(struct kvm_vcpu *vcpu, s64 count_resume);
int kvm_mips_set_count_hz(struct kvm_vcpu *vcpu, s64 count_hz);
void kvm_mips_count_enable_cause(struct kvm_vcpu *vcpu);
void kvm_mips_count_disable_cause(struct kvm_vcpu *vcpu);
enum hrtimer_restart kvm_mips_count_timeout(struct kvm_vcpu *vcpu);
enum emulation_result kvm_mips_check_privilege(unsigned long cause,
uint32_t *opc,
@@ -646,7 +760,6 @@ extern int kvm_mips_trans_mtc0(uint32_t inst, uint32_t *opc,
struct kvm_vcpu *vcpu);
/* Misc */
extern void mips32_SyncICache(unsigned long addr, unsigned long size);
extern int kvm_mips_dump_stats(struct kvm_vcpu *vcpu);
extern unsigned long kvm_mips_get_ramsize(struct kvm *kvm);