Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/x86/xen/xen-head.S
10818 views
1
/* Xen-specific pieces of head.S, intended to be included in the right

2
	place in head.S */

3


4
#ifdef CONFIG_XEN

5


6
#include <linux/elfnote.h>

7
#include <linux/init.h>

8


9
#include <asm/boot.h>

10
#include <asm/asm.h>

11
#include <asm/page_types.h>

12


13
#include <xen/interface/elfnote.h>

14
#include <asm/xen/interface.h>

15


16
	__INIT

17
ENTRY(startup_xen)

18
	cld

19
#ifdef CONFIG_X86_32

20
	mov %esi,xen_start_info

21
	mov $init_thread_union+THREAD_SIZE,%esp

22
#else

23
	mov %rsi,xen_start_info

24
	mov $init_thread_union+THREAD_SIZE,%rsp

25
#endif

26
	jmp xen_start_kernel

27


28
	__FINIT

29


30
.pushsection .text

31
	.align PAGE_SIZE

32
ENTRY(hypercall_page)

33
	.skip PAGE_SIZE

34
.popsection

35


36
	ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS,       .asciz "linux")

37
	ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION,  .asciz "2.6")

38
	ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION,    .asciz "xen-3.0")

39
#ifdef CONFIG_X86_32

40
	ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,      _ASM_PTR __PAGE_OFFSET)

41
#else

42
	ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,      _ASM_PTR __START_KERNEL_map)

43
#endif

44
	ELFNOTE(Xen, XEN_ELFNOTE_ENTRY,          _ASM_PTR startup_xen)

45
	ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, _ASM_PTR hypercall_page)

46
	ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,       .asciz "!writable_page_tables|pae_pgdir_above_4gb")

47
	ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,       .asciz "yes")

48
	ELFNOTE(Xen, XEN_ELFNOTE_LOADER,         .asciz "generic")

49
	ELFNOTE(Xen, XEN_ELFNOTE_L1_MFN_VALID,

50
		.quad _PAGE_PRESENT; .quad _PAGE_PRESENT)

51
	ELFNOTE(Xen, XEN_ELFNOTE_SUSPEND_CANCEL, .long 1)

52
	ELFNOTE(Xen, XEN_ELFNOTE_HV_START_LOW,   _ASM_PTR __HYPERVISOR_VIRT_START)

53
	ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET,   _ASM_PTR 0)

54


55
#endif /*CONFIG_XEN */

56


57