forked from Minki/linux
bc7b11c04e
Change all assembly code which is marked using END (and not ENDPROC). Switch all these to the appropriate new annotation SYM_CODE_START and SYM_CODE_END. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> [xen bits] Cc: Andy Lutomirski <luto@kernel.org> Cc: Cao jin <caoj.fnst@cn.fujitsu.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: linux-arch@vger.kernel.org Cc: Maran Wilson <maran.wilson@oracle.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86-ml <x86@kernel.org> Cc: xen-devel@lists.xenproject.org Link: https://lkml.kernel.org/r/20191011115108.12392-24-jslaby@suse.cz
105 lines
3.0 KiB
ArmAsm
105 lines
3.0 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/* 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/msr.h>
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#include <asm/page_types.h>
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#include <asm/percpu.h>
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#include <asm/unwind_hints.h>
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#include <xen/interface/elfnote.h>
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#include <xen/interface/features.h>
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#include <xen/interface/xen.h>
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#include <xen/interface/xen-mca.h>
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#include <asm/xen/interface.h>
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#ifdef CONFIG_XEN_PV
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__INIT
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SYM_CODE_START(startup_xen)
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UNWIND_HINT_EMPTY
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cld
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/* Clear .bss */
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xor %eax,%eax
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mov $__bss_start, %_ASM_DI
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mov $__bss_stop, %_ASM_CX
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sub %_ASM_DI, %_ASM_CX
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shr $__ASM_SEL(2, 3), %_ASM_CX
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rep __ASM_SIZE(stos)
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mov %_ASM_SI, xen_start_info
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mov $init_thread_union+THREAD_SIZE, %_ASM_SP
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#ifdef CONFIG_X86_64
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/* Set up %gs.
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*
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* The base of %gs always points to fixed_percpu_data. If the
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* stack protector canary is enabled, it is located at %gs:40.
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* Note that, on SMP, the boot cpu uses init data section until
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* the per cpu areas are set up.
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*/
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movl $MSR_GS_BASE,%ecx
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movq $INIT_PER_CPU_VAR(fixed_percpu_data),%rax
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cdq
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wrmsr
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#endif
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jmp xen_start_kernel
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SYM_CODE_END(startup_xen)
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__FINIT
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#endif
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.pushsection .text
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.balign PAGE_SIZE
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SYM_CODE_START(hypercall_page)
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.rept (PAGE_SIZE / 32)
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UNWIND_HINT_EMPTY
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.skip 32
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.endr
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#define HYPERCALL(n) \
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.equ xen_hypercall_##n, hypercall_page + __HYPERVISOR_##n * 32; \
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.type xen_hypercall_##n, @function; .size xen_hypercall_##n, 32
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#include <asm/xen-hypercalls.h>
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#undef HYPERCALL
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SYM_CODE_END(hypercall_page)
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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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/* Map the p2m table to a 512GB-aligned user address. */
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ELFNOTE(Xen, XEN_ELFNOTE_INIT_P2M, .quad (PUD_SIZE * PTRS_PER_PUD))
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#endif
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#ifdef CONFIG_XEN_PV
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ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, _ASM_PTR startup_xen)
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#endif
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ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, _ASM_PTR hypercall_page)
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ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,
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.ascii "!writable_page_tables|pae_pgdir_above_4gb")
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ELFNOTE(Xen, XEN_ELFNOTE_SUPPORTED_FEATURES,
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.long (1 << XENFEAT_writable_page_tables) | \
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(1 << XENFEAT_dom0) | \
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(1 << XENFEAT_linux_rsdp_unrestricted))
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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_MOD_START_PFN, .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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