7d0642b937
This allows us in perf to have this: 99.67% [kernel] [k] xen_hypercall_sched_op 0.11% [kernel] [k] xen_hypercall_xen_version instead of the borring ever-encompassing: 99.13% [kernel] [k] hypercall_page [v2: Use a macro to define the name and skip] [v3: Use balign per Jan's suggestion] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
107 lines
2.9 KiB
ArmAsm
107 lines
2.9 KiB
ArmAsm
/* Xen-specific pieces of head.S, intended to be included in the right
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place in head.S */
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#ifdef CONFIG_XEN
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#include <linux/elfnote.h>
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#include <linux/init.h>
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#include <asm/boot.h>
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#include <asm/asm.h>
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#include <asm/page_types.h>
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#include <xen/interface/elfnote.h>
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#include <asm/xen/interface.h>
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__INIT
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ENTRY(startup_xen)
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cld
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#ifdef CONFIG_X86_32
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mov %esi,xen_start_info
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mov $init_thread_union+THREAD_SIZE,%esp
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#else
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mov %rsi,xen_start_info
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mov $init_thread_union+THREAD_SIZE,%rsp
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#endif
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jmp xen_start_kernel
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__FINIT
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.pushsection .text
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.balign PAGE_SIZE
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ENTRY(hypercall_page)
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#define NEXT_HYPERCALL(x) \
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ENTRY(xen_hypercall_##x) \
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.skip 32
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NEXT_HYPERCALL(set_trap_table)
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NEXT_HYPERCALL(mmu_update)
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NEXT_HYPERCALL(set_gdt)
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NEXT_HYPERCALL(stack_switch)
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NEXT_HYPERCALL(set_callbacks)
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NEXT_HYPERCALL(fpu_taskswitch)
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NEXT_HYPERCALL(sched_op_compat)
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NEXT_HYPERCALL(platform_op)
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NEXT_HYPERCALL(set_debugreg)
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NEXT_HYPERCALL(get_debugreg)
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NEXT_HYPERCALL(update_descriptor)
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NEXT_HYPERCALL(ni)
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NEXT_HYPERCALL(memory_op)
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NEXT_HYPERCALL(multicall)
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NEXT_HYPERCALL(update_va_mapping)
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NEXT_HYPERCALL(set_timer_op)
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NEXT_HYPERCALL(event_channel_op_compat)
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NEXT_HYPERCALL(xen_version)
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NEXT_HYPERCALL(console_io)
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NEXT_HYPERCALL(physdev_op_compat)
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NEXT_HYPERCALL(grant_table_op)
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NEXT_HYPERCALL(vm_assist)
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NEXT_HYPERCALL(update_va_mapping_otherdomain)
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NEXT_HYPERCALL(iret)
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NEXT_HYPERCALL(vcpu_op)
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NEXT_HYPERCALL(set_segment_base)
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NEXT_HYPERCALL(mmuext_op)
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NEXT_HYPERCALL(xsm_op)
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NEXT_HYPERCALL(nmi_op)
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NEXT_HYPERCALL(sched_op)
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NEXT_HYPERCALL(callback_op)
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NEXT_HYPERCALL(xenoprof_op)
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NEXT_HYPERCALL(event_channel_op)
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NEXT_HYPERCALL(physdev_op)
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NEXT_HYPERCALL(hvm_op)
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NEXT_HYPERCALL(sysctl)
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NEXT_HYPERCALL(domctl)
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NEXT_HYPERCALL(kexec_op)
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NEXT_HYPERCALL(tmem_op) /* 38 */
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ENTRY(xen_hypercall_rsvr)
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.skip 320
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NEXT_HYPERCALL(mca) /* 48 */
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NEXT_HYPERCALL(arch_1)
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NEXT_HYPERCALL(arch_2)
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NEXT_HYPERCALL(arch_3)
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NEXT_HYPERCALL(arch_4)
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NEXT_HYPERCALL(arch_5)
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NEXT_HYPERCALL(arch_6)
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.balign PAGE_SIZE
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.popsection
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ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz "linux")
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ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz "2.6")
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ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION, .asciz "xen-3.0")
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#ifdef CONFIG_X86_32
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ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE, _ASM_PTR __PAGE_OFFSET)
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#else
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ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE, _ASM_PTR __START_KERNEL_map)
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#endif
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ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, _ASM_PTR startup_xen)
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ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, _ASM_PTR hypercall_page)
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ELFNOTE(Xen, XEN_ELFNOTE_FEATURES, .asciz "!writable_page_tables|pae_pgdir_above_4gb")
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ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE, .asciz "yes")
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ELFNOTE(Xen, XEN_ELFNOTE_LOADER, .asciz "generic")
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ELFNOTE(Xen, XEN_ELFNOTE_L1_MFN_VALID,
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.quad _PAGE_PRESENT; .quad _PAGE_PRESENT)
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ELFNOTE(Xen, XEN_ELFNOTE_SUSPEND_CANCEL, .long 1)
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ELFNOTE(Xen, XEN_ELFNOTE_HV_START_LOW, _ASM_PTR __HYPERVISOR_VIRT_START)
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ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET, _ASM_PTR 0)
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#endif /*CONFIG_XEN */
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