diff options
Diffstat (limited to 'arch/x86/xen')
| -rw-r--r-- | arch/x86/xen/Makefile | 2 | ||||
| -rw-r--r-- | arch/x86/xen/apic.c | 33 | ||||
| -rw-r--r-- | arch/x86/xen/enlighten.c | 2 | ||||
| -rw-r--r-- | arch/x86/xen/mmu.c | 4 | ||||
| -rw-r--r-- | arch/x86/xen/smp.c | 19 | ||||
| -rw-r--r-- | arch/x86/xen/xen-asm_32.S | 6 | ||||
| -rw-r--r-- | arch/x86/xen/xen-ops.h | 4 |
7 files changed, 47 insertions, 23 deletions
diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile index add2c2d729c..96ab2c09cb6 100644 --- a/arch/x86/xen/Makefile +++ b/arch/x86/xen/Makefile @@ -20,5 +20,5 @@ obj-$(CONFIG_EVENT_TRACING) += trace.o obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_PARAVIRT_SPINLOCKS)+= spinlock.o obj-$(CONFIG_XEN_DEBUG_FS) += debugfs.o -obj-$(CONFIG_XEN_DOM0) += vga.o +obj-$(CONFIG_XEN_DOM0) += apic.o vga.o obj-$(CONFIG_SWIOTLB_XEN) += pci-swiotlb-xen.o diff --git a/arch/x86/xen/apic.c b/arch/x86/xen/apic.c new file mode 100644 index 00000000000..ec57bd3818a --- /dev/null +++ b/arch/x86/xen/apic.c @@ -0,0 +1,33 @@ +#include <linux/init.h> + +#include <asm/x86_init.h> +#include <asm/apic.h> +#include <asm/xen/hypercall.h> + +#include <xen/xen.h> +#include <xen/interface/physdev.h> + +unsigned int xen_io_apic_read(unsigned apic, unsigned reg) +{ + struct physdev_apic apic_op; + int ret; + + apic_op.apic_physbase = mpc_ioapic_addr(apic); + apic_op.reg = reg; + ret = HYPERVISOR_physdev_op(PHYSDEVOP_apic_read, &apic_op); + if (!ret) + return apic_op.value; + + /* fallback to return an emulated IO_APIC values */ + if (reg == 0x1) + return 0x00170020; + else if (reg == 0x0) + return apic << 24; + + return 0xfd; +} + +void __init xen_init_apic(void) +{ + x86_io_apic_ops.read = xen_io_apic_read; +} diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 95dccce8e97..c0f5facdb10 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1396,6 +1396,8 @@ asmlinkage void __init xen_start_kernel(void) xen_start_info->console.domU.mfn = 0; xen_start_info->console.domU.evtchn = 0; + xen_init_apic(); + /* Make sure ACS will be enabled */ pci_request_acs(); } diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 69f5857660a..3506cd4f9a4 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1864,7 +1864,6 @@ pgd_t * __init xen_setup_kernel_pagetable(pgd_t *pgd, #endif /* CONFIG_X86_64 */ static unsigned char dummy_mapping[PAGE_SIZE] __page_aligned_bss; -static unsigned char fake_ioapic_mapping[PAGE_SIZE] __page_aligned_bss; static void xen_set_fixmap(unsigned idx, phys_addr_t phys, pgprot_t prot) { @@ -1905,7 +1904,7 @@ static void xen_set_fixmap(unsigned idx, phys_addr_t phys, pgprot_t prot) * We just don't map the IO APIC - all access is via * hypercalls. Keep the address in the pte for reference. */ - pte = pfn_pte(PFN_DOWN(__pa(fake_ioapic_mapping)), PAGE_KERNEL); + pte = pfn_pte(PFN_DOWN(__pa(dummy_mapping)), PAGE_KERNEL); break; #endif @@ -2070,7 +2069,6 @@ void __init xen_init_mmu_ops(void) pv_mmu_ops = xen_mmu_ops; memset(dummy_mapping, 0xff, PAGE_SIZE); - memset(fake_ioapic_mapping, 0xfd, PAGE_SIZE); } /* Protected by xen_reservation_lock. */ diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 0503c0c493a..3700945ed0d 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -265,18 +265,8 @@ static void __init xen_smp_prepare_cpus(unsigned int max_cpus) set_cpu_possible(cpu, false); } - for_each_possible_cpu (cpu) { - struct task_struct *idle; - - if (cpu == 0) - continue; - - idle = fork_idle(cpu); - if (IS_ERR(idle)) - panic("failed fork for CPU %d", cpu); - + for_each_possible_cpu(cpu) set_cpu_present(cpu, true); - } } static int __cpuinit @@ -346,9 +336,8 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle) return 0; } -static int __cpuinit xen_cpu_up(unsigned int cpu) +static int __cpuinit xen_cpu_up(unsigned int cpu, struct task_struct *idle) { - struct task_struct *idle = idle_task(cpu); int rc; per_cpu(current_task, cpu) = idle; @@ -562,10 +551,10 @@ static void __init xen_hvm_smp_prepare_cpus(unsigned int max_cpus) xen_init_lock_cpu(0); } -static int __cpuinit xen_hvm_cpu_up(unsigned int cpu) +static int __cpuinit xen_hvm_cpu_up(unsigned int cpu, struct task_struct *tidle) { int rc; - rc = native_cpu_up(cpu); + rc = native_cpu_up(cpu, tidle); WARN_ON (xen_smp_intr_init(cpu)); return rc; } diff --git a/arch/x86/xen/xen-asm_32.S b/arch/x86/xen/xen-asm_32.S index b040b0e518c..f9643fc50de 100644 --- a/arch/x86/xen/xen-asm_32.S +++ b/arch/x86/xen/xen-asm_32.S @@ -14,6 +14,7 @@ #include <asm/thread_info.h> #include <asm/processor-flags.h> #include <asm/segment.h> +#include <asm/asm.h> #include <xen/interface/xen.h> @@ -137,10 +138,7 @@ iret_restore_end: 1: iret xen_iret_end_crit: -.section __ex_table, "a" - .align 4 - .long 1b, iret_exc -.previous + _ASM_EXTABLE(1b, iret_exc) hyper_iret: /* put this out of line since its very rarely used */ diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h index b095739ccd4..45c0c0667bd 100644 --- a/arch/x86/xen/xen-ops.h +++ b/arch/x86/xen/xen-ops.h @@ -92,11 +92,15 @@ struct dom0_vga_console_info; #ifdef CONFIG_XEN_DOM0 void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size); +void __init xen_init_apic(void); #else static inline void __init xen_init_vga(const struct dom0_vga_console_info *info, size_t size) { } +static inline void __init xen_init_apic(void) +{ +} #endif /* Declare an asm function, along with symbols needed to make it |