diff options
Diffstat (limited to 'arch/x86/xen')
-rw-r--r-- | arch/x86/xen/setup.c | 2 | ||||
-rw-r--r-- | arch/x86/xen/smp.c | 2 | ||||
-rw-r--r-- | arch/x86/xen/smp_pv.c | 3 | ||||
-rw-r--r-- | arch/x86/xen/time.c | 36 | ||||
-rw-r--r-- | arch/x86/xen/xen-head.S | 18 |
5 files changed, 42 insertions, 19 deletions
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 33b0e20df7fc..1a2d8a50dac4 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -985,7 +985,7 @@ void xen_enable_syscall(void) #endif /* CONFIG_X86_64 */ } -void __init xen_pvmmu_arch_setup(void) +static void __init xen_pvmmu_arch_setup(void) { HYPERVISOR_vm_assist(VMASST_CMD_enable, VMASST_TYPE_4gb_segments); HYPERVISOR_vm_assist(VMASST_CMD_enable, VMASST_TYPE_writable_pagetables); diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 7a43b2ae19f1..2097fa0ebdb5 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -132,7 +132,7 @@ void __init xen_smp_cpus_done(unsigned int max_cpus) if (xen_vcpu_nr(cpu) < MAX_VIRT_CPUS) continue; - rc = cpu_down(cpu); + rc = remove_cpu(cpu); if (rc == 0) { /* diff --git a/arch/x86/xen/smp_pv.c b/arch/x86/xen/smp_pv.c index 802ee5bba66c..8fb8a50a28b4 100644 --- a/arch/x86/xen/smp_pv.c +++ b/arch/x86/xen/smp_pv.c @@ -53,6 +53,7 @@ static DEFINE_PER_CPU(struct xen_common_irq, xen_irq_work) = { .irq = -1 }; static DEFINE_PER_CPU(struct xen_common_irq, xen_pmu_irq) = { .irq = -1 }; static irqreturn_t xen_irq_work_interrupt(int irq, void *dev_id); +void asm_cpu_bringup_and_idle(void); static void cpu_bringup(void) { @@ -309,7 +310,7 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle) * pointing just below where pt_regs would be if it were a normal * kernel entry. */ - ctxt->user_regs.eip = (unsigned long)cpu_bringup_and_idle; + ctxt->user_regs.eip = (unsigned long)asm_cpu_bringup_and_idle; ctxt->flags = VGCF_IN_KERNEL; ctxt->user_regs.eflags = 0x1000; /* IOPL_RING1 */ ctxt->user_regs.ds = __USER_DS; diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index befbdd8b17f0..c8897aad13cd 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -145,12 +145,19 @@ static struct notifier_block xen_pvclock_gtod_notifier = { .notifier_call = xen_pvclock_gtod_notify, }; +static int xen_cs_enable(struct clocksource *cs) +{ + vclocks_set_used(VDSO_CLOCKMODE_PVCLOCK); + return 0; +} + static struct clocksource xen_clocksource __read_mostly = { - .name = "xen", - .rating = 400, - .read = xen_clocksource_get_cycles, - .mask = ~0, - .flags = CLOCK_SOURCE_IS_CONTINUOUS, + .name = "xen", + .rating = 400, + .read = xen_clocksource_get_cycles, + .mask = CLOCKSOURCE_MASK(64), + .flags = CLOCK_SOURCE_IS_CONTINUOUS, + .enable = xen_cs_enable, }; /* @@ -412,12 +419,13 @@ void xen_restore_time_memory_area(void) ret = HYPERVISOR_vcpu_op(VCPUOP_register_vcpu_time_memory_area, 0, &t); /* - * We don't disable VCLOCK_PVCLOCK entirely if it fails to register the - * secondary time info with Xen or if we migrated to a host without the - * necessary flags. On both of these cases what happens is either - * process seeing a zeroed out pvti or seeing no PVCLOCK_TSC_STABLE_BIT - * bit set. Userspace checks the latter and if 0, it discards the data - * in pvti and fallbacks to a system call for a reliable timestamp. + * We don't disable VDSO_CLOCKMODE_PVCLOCK entirely if it fails to + * register the secondary time info with Xen or if we migrated to a + * host without the necessary flags. On both of these cases what + * happens is either process seeing a zeroed out pvti or seeing no + * PVCLOCK_TSC_STABLE_BIT bit set. Userspace checks the latter and + * if 0, it discards the data in pvti and fallbacks to a system + * call for a reliable timestamp. */ if (ret != 0) pr_notice("Cannot restore secondary vcpu_time_info (err %d)", @@ -443,7 +451,7 @@ static void xen_setup_vsyscall_time_info(void) ret = HYPERVISOR_vcpu_op(VCPUOP_register_vcpu_time_memory_area, 0, &t); if (ret) { - pr_notice("xen: VCLOCK_PVCLOCK not supported (err %d)\n", ret); + pr_notice("xen: VDSO_CLOCKMODE_PVCLOCK not supported (err %d)\n", ret); free_page((unsigned long)ti); return; } @@ -460,14 +468,14 @@ static void xen_setup_vsyscall_time_info(void) if (!ret) free_page((unsigned long)ti); - pr_notice("xen: VCLOCK_PVCLOCK not supported (tsc unstable)\n"); + pr_notice("xen: VDSO_CLOCKMODE_PVCLOCK not supported (tsc unstable)\n"); return; } xen_clock = ti; pvclock_set_pvti_cpu0_va(xen_clock); - xen_clocksource.archdata.vclock_mode = VCLOCK_PVCLOCK; + xen_clocksource.vdso_clock_mode = VDSO_CLOCKMODE_PVCLOCK; } static void __init xen_time_init(void) diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S index 1d0cee3163e4..1ba601df3a37 100644 --- a/arch/x86/xen/xen-head.S +++ b/arch/x86/xen/xen-head.S @@ -35,7 +35,11 @@ SYM_CODE_START(startup_xen) rep __ASM_SIZE(stos) mov %_ASM_SI, xen_start_info - mov $init_thread_union+THREAD_SIZE, %_ASM_SP +#ifdef CONFIG_X86_64 + mov initial_stack(%rip), %rsp +#else + mov initial_stack, %esp +#endif #ifdef CONFIG_X86_64 /* Set up %gs. @@ -51,9 +55,19 @@ SYM_CODE_START(startup_xen) wrmsr #endif - jmp xen_start_kernel + call xen_start_kernel SYM_CODE_END(startup_xen) __FINIT + +#ifdef CONFIG_XEN_PV_SMP +.pushsection .text +SYM_CODE_START(asm_cpu_bringup_and_idle) + UNWIND_HINT_EMPTY + + call cpu_bringup_and_idle +SYM_CODE_END(asm_cpu_bringup_and_idle) +.popsection +#endif #endif .pushsection .text |