#include <asm/paravirt.h>
#include <asm/desc.h>
#include <asm/setup.h>
-#include <asm/arch_hooks.h>
+#include <asm/pgtable.h>
#include <asm/time.h>
+#include <asm/pgalloc.h>
#include <asm/irq.h>
#include <asm/delay.h>
#include <asm/fixmap.h>
{
}
-static void __init default_banner(void)
+/* identity function, which can be inlined */
+u32 _paravirt_ident_32(u32 x)
{
- printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
- pv_info.name);
+ return x;
}
-char *memory_setup(void)
+u64 _paravirt_ident_64(u64 x)
{
- return pv_init_ops.memory_setup();
+ return x;
+}
+
+void __init default_banner(void)
+{
+ printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
+ pv_info.name);
}
/* Simple instruction patching code. */
.pv_irq_ops = pv_irq_ops,
.pv_apic_ops = pv_apic_ops,
.pv_mmu_ops = pv_mmu_ops,
+#ifdef CONFIG_PARAVIRT_SPINLOCKS
+ .pv_lock_ops = pv_lock_ops,
+#endif
};
return *((void **)&tmpl + type);
}
if (opfunc == NULL)
/* If there's no function, patch it with a ud2a (BUG) */
ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a));
- else if (opfunc == paravirt_nop)
+ else if (opfunc == _paravirt_nop)
/* If the operation is a nop, then nop the callsite */
ret = paravirt_patch_nop();
+
+ /* identity functions just return their single argument */
+ else if (opfunc == _paravirt_ident_32)
+ ret = paravirt_patch_ident_32(insnbuf, len);
+ else if (opfunc == _paravirt_ident_64)
+ ret = paravirt_patch_ident_64(insnbuf, len);
+
else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) ||
- type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_syscall_ret))
+ type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit) ||
+ type == PARAVIRT_PATCH(pv_cpu_ops.usergs_sysret32) ||
+ type == PARAVIRT_PATCH(pv_cpu_ops.usergs_sysret64))
/* If operation requires a jmp, then jmp */
ret = paravirt_patch_jmp(insnbuf, opfunc, addr, len);
else
return insn_len;
}
-void init_IRQ(void)
-{
- pv_irq_ops.init_IRQ();
-}
-
static void native_flush_tlb(void)
{
__native_flush_tlb();
/* These are in entry.S */
extern void native_iret(void);
-extern void native_irq_enable_syscall_ret(void);
-
-static int __init print_banner(void)
-{
- pv_init_ops.banner();
- return 0;
-}
-core_initcall(print_banner);
+extern void native_irq_enable_sysexit(void);
+extern void native_usergs_sysret32(void);
+extern void native_usergs_sysret64(void);
static struct resource reserve_ioports = {
.start = 0,
static inline void enter_lazy(enum paravirt_lazy_mode mode)
{
- BUG_ON(__get_cpu_var(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE);
- BUG_ON(preemptible());
+ BUG_ON(percpu_read(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE);
- __get_cpu_var(paravirt_lazy_mode) = mode;
+ percpu_write(paravirt_lazy_mode, mode);
}
-void paravirt_leave_lazy(enum paravirt_lazy_mode mode)
+static void leave_lazy(enum paravirt_lazy_mode mode)
{
- BUG_ON(__get_cpu_var(paravirt_lazy_mode) != mode);
- BUG_ON(preemptible());
+ BUG_ON(percpu_read(paravirt_lazy_mode) != mode);
- __get_cpu_var(paravirt_lazy_mode) = PARAVIRT_LAZY_NONE;
+ percpu_write(paravirt_lazy_mode, PARAVIRT_LAZY_NONE);
}
void paravirt_enter_lazy_mmu(void)
void paravirt_leave_lazy_mmu(void)
{
- paravirt_leave_lazy(PARAVIRT_LAZY_MMU);
+ leave_lazy(PARAVIRT_LAZY_MMU);
}
-void paravirt_enter_lazy_cpu(void)
+void paravirt_start_context_switch(struct task_struct *prev)
{
+ BUG_ON(preemptible());
+
+ if (percpu_read(paravirt_lazy_mode) == PARAVIRT_LAZY_MMU) {
+ arch_leave_lazy_mmu_mode();
+ set_ti_thread_flag(task_thread_info(prev), TIF_LAZY_MMU_UPDATES);
+ }
enter_lazy(PARAVIRT_LAZY_CPU);
}
-void paravirt_leave_lazy_cpu(void)
+void paravirt_end_context_switch(struct task_struct *next)
{
- paravirt_leave_lazy(PARAVIRT_LAZY_CPU);
+ BUG_ON(preemptible());
+
+ leave_lazy(PARAVIRT_LAZY_CPU);
+
+ if (test_and_clear_ti_thread_flag(task_thread_info(next), TIF_LAZY_MMU_UPDATES))
+ arch_enter_lazy_mmu_mode();
}
enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
{
- return __get_cpu_var(paravirt_lazy_mode);
+ if (in_interrupt())
+ return PARAVIRT_LAZY_NONE;
+
+ return percpu_read(paravirt_lazy_mode);
+}
+
+void arch_flush_lazy_mmu_mode(void)
+{
+ preempt_disable();
+
+ if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU) {
+ arch_leave_lazy_mmu_mode();
+ arch_enter_lazy_mmu_mode();
+ }
+
+ preempt_enable();
}
struct pv_info pv_info = {
struct pv_init_ops pv_init_ops = {
.patch = native_patch,
- .banner = default_banner,
- .arch_setup = paravirt_nop,
- .memory_setup = machine_specific_memory_setup,
};
struct pv_time_ops pv_time_ops = {
.get_wallclock = native_get_wallclock,
.set_wallclock = native_set_wallclock,
.sched_clock = native_sched_clock,
- .get_cpu_khz = native_calculate_cpu_khz,
+ .get_tsc_khz = native_calibrate_tsc,
};
struct pv_irq_ops pv_irq_ops = {
- .init_IRQ = native_init_IRQ,
- .save_fl = native_save_fl,
- .restore_fl = native_restore_fl,
- .irq_disable = native_irq_disable,
- .irq_enable = native_irq_enable,
+ .save_fl = __PV_IS_CALLEE_SAVE(native_save_fl),
+ .restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl),
+ .irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable),
+ .irq_enable = __PV_IS_CALLEE_SAVE(native_irq_enable),
.safe_halt = native_safe_halt,
.halt = native_halt,
+#ifdef CONFIG_X86_64
+ .adjust_exception_frame = paravirt_nop,
+#endif
};
struct pv_cpu_ops pv_cpu_ops = {
#endif
.wbinvd = native_wbinvd,
.read_msr = native_read_msr_safe,
+ .read_msr_amd = native_read_msr_amd_safe,
.write_msr = native_write_msr_safe,
.read_tsc = native_read_tsc,
.read_pmc = native_read_pmc,
.store_idt = native_store_idt,
.store_tr = native_store_tr,
.load_tls = native_load_tls,
+#ifdef CONFIG_X86_64
+ .load_gs_index = native_load_gs_index,
+#endif
.write_ldt_entry = native_write_ldt_entry,
.write_gdt_entry = native_write_gdt_entry,
.write_idt_entry = native_write_idt_entry,
+
+ .alloc_ldt = paravirt_nop,
+ .free_ldt = paravirt_nop,
+
.load_sp0 = native_load_sp0,
- .irq_enable_syscall_ret = native_irq_enable_syscall_ret,
+#if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
+ .irq_enable_sysexit = native_irq_enable_sysexit,
+#endif
+#ifdef CONFIG_X86_64
+#ifdef CONFIG_IA32_EMULATION
+ .usergs_sysret32 = native_usergs_sysret32,
+#endif
+ .usergs_sysret64 = native_usergs_sysret64,
+#endif
.iret = native_iret,
.swapgs = native_swapgs,
.set_iopl_mask = native_set_iopl_mask,
.io_delay = native_io_delay,
- .lazy_mode = {
- .enter = paravirt_nop,
- .leave = paravirt_nop,
- },
+ .start_context_switch = paravirt_nop,
+ .end_context_switch = paravirt_nop,
};
struct pv_apic_ops pv_apic_ops = {
#ifdef CONFIG_X86_LOCAL_APIC
- .apic_write = native_apic_write,
- .apic_write_atomic = native_apic_write_atomic,
- .apic_read = native_apic_read,
.setup_boot_clock = setup_boot_APIC_clock,
.setup_secondary_clock = setup_secondary_APIC_clock,
.startup_ipi_hook = paravirt_nop,
#endif
};
+#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE)
+/* 32-bit pagetable entries */
+#define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_32)
+#else
+/* 64-bit pagetable entries */
+#define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_64)
+#endif
+
struct pv_mmu_ops pv_mmu_ops = {
#ifndef CONFIG_X86_64
.pagetable_setup_start = native_pagetable_setup_start,
.pagetable_setup_done = native_pagetable_setup_done,
+#else
+ .pagetable_setup_start = paravirt_nop,
+ .pagetable_setup_done = paravirt_nop,
#endif
.read_cr2 = native_read_cr2,
.flush_tlb_single = native_flush_tlb_single,
.flush_tlb_others = native_flush_tlb_others,
+ .pgd_alloc = __paravirt_pgd_alloc,
+ .pgd_free = paravirt_nop,
+
.alloc_pte = paravirt_nop,
.alloc_pmd = paravirt_nop,
.alloc_pmd_clone = paravirt_nop,
.pte_update = paravirt_nop,
.pte_update_defer = paravirt_nop,
+ .ptep_modify_prot_start = __ptep_modify_prot_start,
+ .ptep_modify_prot_commit = __ptep_modify_prot_commit,
+
#ifdef CONFIG_HIGHPTE
.kmap_atomic_pte = kmap_atomic,
#endif
#if PAGETABLE_LEVELS >= 3
#ifdef CONFIG_X86_PAE
.set_pte_atomic = native_set_pte_atomic,
- .set_pte_present = native_set_pte_present,
.pte_clear = native_pte_clear,
.pmd_clear = native_pmd_clear,
#endif
.set_pud = native_set_pud,
- .pmd_val = native_pmd_val,
- .make_pmd = native_make_pmd,
+
+ .pmd_val = PTE_IDENT,
+ .make_pmd = PTE_IDENT,
#if PAGETABLE_LEVELS == 4
- .pud_val = native_pud_val,
- .make_pud = native_make_pud,
+ .pud_val = PTE_IDENT,
+ .make_pud = PTE_IDENT,
+
.set_pgd = native_set_pgd,
#endif
#endif /* PAGETABLE_LEVELS >= 3 */
- .pte_val = native_pte_val,
- .pgd_val = native_pgd_val,
+ .pte_val = PTE_IDENT,
+ .pgd_val = PTE_IDENT,
- .make_pte = native_make_pte,
- .make_pgd = native_make_pgd,
+ .make_pte = PTE_IDENT,
+ .make_pgd = PTE_IDENT,
.dup_mmap = paravirt_nop,
.exit_mmap = paravirt_nop,
.enter = paravirt_nop,
.leave = paravirt_nop,
},
+
+ .set_fixmap = native_set_fixmap,
};
EXPORT_SYMBOL_GPL(pv_time_ops);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff