ia64/xen-unstable

view linux-2.6-xen-sparse/include/asm-x86_64/kexec.h @ 14321:f421ccd1141f

Added section on references vs UUIDs.

Signed-off-by: Ewan Mellor <ewan@xensource.com>
author Ewan Mellor <ewan@xensource.com>
date Fri Mar 09 00:44:10 2007 +0000 (2007-03-09)
parents 562eee7568a8
children
line source
1 #ifndef _X86_64_KEXEC_H
2 #define _X86_64_KEXEC_H
4 #define PA_CONTROL_PAGE 0
5 #define VA_CONTROL_PAGE 1
6 #define PA_PGD 2
7 #define VA_PGD 3
8 #define PA_PUD_0 4
9 #define VA_PUD_0 5
10 #define PA_PMD_0 6
11 #define VA_PMD_0 7
12 #define PA_PTE_0 8
13 #define VA_PTE_0 9
14 #define PA_PUD_1 10
15 #define VA_PUD_1 11
16 #define PA_PMD_1 12
17 #define VA_PMD_1 13
18 #define PA_PTE_1 14
19 #define VA_PTE_1 15
20 #define PA_TABLE_PAGE 16
21 #define PAGES_NR 17
23 #ifndef __ASSEMBLY__
25 #include <linux/string.h>
27 #include <asm/page.h>
28 #include <asm/ptrace.h>
30 /*
31 * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
32 * I.e. Maximum page that is mapped directly into kernel memory,
33 * and kmap is not required.
34 *
35 * So far x86_64 is limited to 40 physical address bits.
36 */
38 /* Maximum physical address we can use pages from */
39 #define KEXEC_SOURCE_MEMORY_LIMIT (0xFFFFFFFFFFUL)
40 /* Maximum address we can reach in physical address mode */
41 #define KEXEC_DESTINATION_MEMORY_LIMIT (0xFFFFFFFFFFUL)
42 /* Maximum address we can use for the control pages */
43 #define KEXEC_CONTROL_MEMORY_LIMIT (0xFFFFFFFFFFUL)
45 /* Allocate one page for the pdp and the second for the code */
46 #define KEXEC_CONTROL_CODE_SIZE (4096UL + 4096UL)
48 /* The native architecture */
49 #define KEXEC_ARCH KEXEC_ARCH_X86_64
51 #define MAX_NOTE_BYTES 1024
53 /*
54 * Saving the registers of the cpu on which panic occured in
55 * crash_kexec to save a valid sp. The registers of other cpus
56 * will be saved in machine_crash_shutdown while shooting down them.
57 */
59 static inline void crash_setup_regs(struct pt_regs *newregs,
60 struct pt_regs *oldregs)
61 {
62 if (oldregs)
63 memcpy(newregs, oldregs, sizeof(*newregs));
64 else {
65 __asm__ __volatile__("movq %%rbx,%0" : "=m"(newregs->rbx));
66 __asm__ __volatile__("movq %%rcx,%0" : "=m"(newregs->rcx));
67 __asm__ __volatile__("movq %%rdx,%0" : "=m"(newregs->rdx));
68 __asm__ __volatile__("movq %%rsi,%0" : "=m"(newregs->rsi));
69 __asm__ __volatile__("movq %%rdi,%0" : "=m"(newregs->rdi));
70 __asm__ __volatile__("movq %%rbp,%0" : "=m"(newregs->rbp));
71 __asm__ __volatile__("movq %%rax,%0" : "=m"(newregs->rax));
72 __asm__ __volatile__("movq %%rsp,%0" : "=m"(newregs->rsp));
73 __asm__ __volatile__("movq %%r8,%0" : "=m"(newregs->r8));
74 __asm__ __volatile__("movq %%r9,%0" : "=m"(newregs->r9));
75 __asm__ __volatile__("movq %%r10,%0" : "=m"(newregs->r10));
76 __asm__ __volatile__("movq %%r11,%0" : "=m"(newregs->r11));
77 __asm__ __volatile__("movq %%r12,%0" : "=m"(newregs->r12));
78 __asm__ __volatile__("movq %%r13,%0" : "=m"(newregs->r13));
79 __asm__ __volatile__("movq %%r14,%0" : "=m"(newregs->r14));
80 __asm__ __volatile__("movq %%r15,%0" : "=m"(newregs->r15));
81 __asm__ __volatile__("movl %%ss, %%eax;" :"=a"(newregs->ss));
82 __asm__ __volatile__("movl %%cs, %%eax;" :"=a"(newregs->cs));
83 __asm__ __volatile__("pushfq; popq %0" :"=m"(newregs->eflags));
85 newregs->rip = (unsigned long)current_text_addr();
86 }
87 }
89 NORET_TYPE void
90 relocate_kernel(unsigned long indirection_page,
91 unsigned long page_list,
92 unsigned long start_address) ATTRIB_NORET;
94 /* Under Xen we need to work with machine addresses. These macros give the
95 * machine address of a certain page to the generic kexec code instead of
96 * the pseudo physical address which would be given by the default macros.
97 */
99 #ifdef CONFIG_XEN
100 #define KEXEC_ARCH_HAS_PAGE_MACROS
101 #define kexec_page_to_pfn(page) pfn_to_mfn(page_to_pfn(page))
102 #define kexec_pfn_to_page(pfn) pfn_to_page(mfn_to_pfn(pfn))
103 #define kexec_virt_to_phys(addr) virt_to_machine(addr)
104 #define kexec_phys_to_virt(addr) phys_to_virt(machine_to_phys(addr))
105 #endif
107 #endif /* __ASSEMBLY__ */
109 #endif /* _X86_64_KEXEC_H */