diff options
Diffstat (limited to 'include/asm-x86/kexec.h')
| -rw-r--r-- | include/asm-x86/kexec.h | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/include/asm-x86/kexec.h b/include/asm-x86/kexec.h deleted file mode 100644 index ea09600d612..00000000000 --- a/include/asm-x86/kexec.h +++ /dev/null @@ -1,175 +0,0 @@ -#ifndef ASM_X86__KEXEC_H -#define ASM_X86__KEXEC_H - -#ifdef CONFIG_X86_32 -# define PA_CONTROL_PAGE 0 -# define VA_CONTROL_PAGE 1 -# define PA_PGD 2 -# define VA_PGD 3 -# define PA_PTE_0 4 -# define VA_PTE_0 5 -# define PA_PTE_1 6 -# define VA_PTE_1 7 -# define PA_SWAP_PAGE 8 -# ifdef CONFIG_X86_PAE -# define PA_PMD_0 9 -# define VA_PMD_0 10 -# define PA_PMD_1 11 -# define VA_PMD_1 12 -# define PAGES_NR 13 -# else -# define PAGES_NR 9 -# endif -#else -# define PA_CONTROL_PAGE 0 -# define VA_CONTROL_PAGE 1 -# define PA_PGD 2 -# define VA_PGD 3 -# define PA_PUD_0 4 -# define VA_PUD_0 5 -# define PA_PMD_0 6 -# define VA_PMD_0 7 -# define PA_PTE_0 8 -# define VA_PTE_0 9 -# define PA_PUD_1 10 -# define VA_PUD_1 11 -# define PA_PMD_1 12 -# define VA_PMD_1 13 -# define PA_PTE_1 14 -# define VA_PTE_1 15 -# define PA_TABLE_PAGE 16 -# define PAGES_NR 17 -#endif - -#ifdef CONFIG_X86_32 -# define KEXEC_CONTROL_CODE_MAX_SIZE 2048 -#endif - -#ifndef __ASSEMBLY__ - -#include <linux/string.h> - -#include <asm/page.h> -#include <asm/ptrace.h> - -/* - * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return. - * I.e. Maximum page that is mapped directly into kernel memory, - * and kmap is not required. - * - * So far x86_64 is limited to 40 physical address bits. - */ -#ifdef CONFIG_X86_32 -/* Maximum physical address we can use pages from */ -# define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) -/* Maximum address we can reach in physical address mode */ -# define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) -/* Maximum address we can use for the control code buffer */ -# define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE - -# define KEXEC_CONTROL_PAGE_SIZE 4096 - -/* The native architecture */ -# define KEXEC_ARCH KEXEC_ARCH_386 - -/* We can also handle crash dumps from 64 bit kernel. */ -# define vmcore_elf_check_arch_cross(x) ((x)->e_machine == EM_X86_64) -#else -/* Maximum physical address we can use pages from */ -# define KEXEC_SOURCE_MEMORY_LIMIT (0xFFFFFFFFFFUL) -/* Maximum address we can reach in physical address mode */ -# define KEXEC_DESTINATION_MEMORY_LIMIT (0xFFFFFFFFFFUL) -/* Maximum address we can use for the control pages */ -# define KEXEC_CONTROL_MEMORY_LIMIT (0xFFFFFFFFFFUL) - -/* Allocate one page for the pdp and the second for the code */ -# define KEXEC_CONTROL_PAGE_SIZE (4096UL + 4096UL) - -/* The native architecture */ -# define KEXEC_ARCH KEXEC_ARCH_X86_64 -#endif - -/* - * CPU does not save ss and sp on stack if execution is already - * running in kernel mode at the time of NMI occurrence. This code - * fixes it. - */ -static inline void crash_fixup_ss_esp(struct pt_regs *newregs, - struct pt_regs *oldregs) -{ -#ifdef CONFIG_X86_32 - newregs->sp = (unsigned long)&(oldregs->sp); - asm volatile("xorl %%eax, %%eax\n\t" - "movw %%ss, %%ax\n\t" - :"=a"(newregs->ss)); -#endif -} - -/* - * This function is responsible for capturing register states if coming - * via panic otherwise just fix up the ss and sp if coming via kernel - * mode exception. - */ -static inline void crash_setup_regs(struct pt_regs *newregs, - struct pt_regs *oldregs) -{ - if (oldregs) { - memcpy(newregs, oldregs, sizeof(*newregs)); - crash_fixup_ss_esp(newregs, oldregs); - } else { -#ifdef CONFIG_X86_32 - asm volatile("movl %%ebx,%0" : "=m"(newregs->bx)); - asm volatile("movl %%ecx,%0" : "=m"(newregs->cx)); - asm volatile("movl %%edx,%0" : "=m"(newregs->dx)); - asm volatile("movl %%esi,%0" : "=m"(newregs->si)); - asm volatile("movl %%edi,%0" : "=m"(newregs->di)); - asm volatile("movl %%ebp,%0" : "=m"(newregs->bp)); - asm volatile("movl %%eax,%0" : "=m"(newregs->ax)); - asm volatile("movl %%esp,%0" : "=m"(newregs->sp)); - asm volatile("movl %%ss, %%eax;" :"=a"(newregs->ss)); - asm volatile("movl %%cs, %%eax;" :"=a"(newregs->cs)); - asm volatile("movl %%ds, %%eax;" :"=a"(newregs->ds)); - asm volatile("movl %%es, %%eax;" :"=a"(newregs->es)); - asm volatile("pushfl; popl %0" :"=m"(newregs->flags)); -#else - asm volatile("movq %%rbx,%0" : "=m"(newregs->bx)); - asm volatile("movq %%rcx,%0" : "=m"(newregs->cx)); - asm volatile("movq %%rdx,%0" : "=m"(newregs->dx)); - asm volatile("movq %%rsi,%0" : "=m"(newregs->si)); - asm volatile("movq %%rdi,%0" : "=m"(newregs->di)); - asm volatile("movq %%rbp,%0" : "=m"(newregs->bp)); - asm volatile("movq %%rax,%0" : "=m"(newregs->ax)); - asm volatile("movq %%rsp,%0" : "=m"(newregs->sp)); - asm volatile("movq %%r8,%0" : "=m"(newregs->r8)); - asm volatile("movq %%r9,%0" : "=m"(newregs->r9)); - asm volatile("movq %%r10,%0" : "=m"(newregs->r10)); - asm volatile("movq %%r11,%0" : "=m"(newregs->r11)); - asm volatile("movq %%r12,%0" : "=m"(newregs->r12)); - asm volatile("movq %%r13,%0" : "=m"(newregs->r13)); - asm volatile("movq %%r14,%0" : "=m"(newregs->r14)); - asm volatile("movq %%r15,%0" : "=m"(newregs->r15)); - asm volatile("movl %%ss, %%eax;" :"=a"(newregs->ss)); - asm volatile("movl %%cs, %%eax;" :"=a"(newregs->cs)); - asm volatile("pushfq; popq %0" :"=m"(newregs->flags)); -#endif - newregs->ip = (unsigned long)current_text_addr(); - } -} - -#ifdef CONFIG_X86_32 -asmlinkage unsigned long -relocate_kernel(unsigned long indirection_page, - unsigned long control_page, - unsigned long start_address, - unsigned int has_pae, - unsigned int preserve_context); -#else -NORET_TYPE void -relocate_kernel(unsigned long indirection_page, - unsigned long page_list, - unsigned long start_address) ATTRIB_NORET; -#endif - -#endif /* __ASSEMBLY__ */ - -#endif /* ASM_X86__KEXEC_H */ |