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Message-Id: <1197812321.3749.59.camel@brick>
Date: Sun, 16 Dec 2007 05:38:41 -0800
From: Harvey Harrison <harvey.harrison@...il.com>
To: Ingo Molnar <mingo@...e.hu>
Cc: "H. Peter Anvin" <hpa@...or.com>,
LKML <linux-kernel@...r.kernel.org>,
Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH] x86: Unify kexec_{32|64}.h
One section collecting all constant defines. Ifdef the asm
blocks for X86_32/64.
Signed-off-by: Harvey Harrison <harvey.harrison@...il.com>
---
include/asm-x86/kexec.h | 169 +++++++++++++++++++++++++++++++++++++++++++-
include/asm-x86/kexec_32.h | 99 --------------------------
include/asm-x86/kexec_64.h | 94 ------------------------
3 files changed, 167 insertions(+), 195 deletions(-)
diff --git a/include/asm-x86/kexec.h b/include/asm-x86/kexec.h
index 718ddbf..c90d3c7 100644
--- a/include/asm-x86/kexec.h
+++ b/include/asm-x86/kexec.h
@@ -1,5 +1,170 @@
+#ifndef _KEXEC_H
+#define _KEXEC_H
+
#ifdef CONFIG_X86_32
-# include "kexec_32.h"
+# 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
+# ifdef CONFIG_X86_PAE
+# define PA_PMD_0 8
+# define VA_PMD_0 9
+# define PA_PMD_1 10
+# define VA_PMD_1 11
+# define PAGES_NR 12
+# else
+# define PAGES_NR 8
+# endif
#else
-# include "kexec_64.h"
+# 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
+
+#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_CODE_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_CODE_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 NORET_TYPE void
+relocate_kernel(unsigned long indirection_page,
+ unsigned long control_page,
+ unsigned long start_address,
+ unsigned int has_pae) ATTRIB_NORET;
+#else
+NORET_TYPE void
+relocate_kernel(unsigned long indirection_page,
+ unsigned long page_list,
+ unsigned long start_address) ATTRIB_NORET;
+#endif
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _KEXEC_H */
diff --git a/include/asm-x86/kexec_32.h b/include/asm-x86/kexec_32.h
deleted file mode 100644
index ff39d2f..0000000
--- a/include/asm-x86/kexec_32.h
+++ /dev/null
@@ -1,99 +0,0 @@
-#ifndef _I386_KEXEC_H
-#define _I386_KEXEC_H
-
-#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
-#ifdef CONFIG_X86_PAE
-#define PA_PMD_0 8
-#define VA_PMD_0 9
-#define PA_PMD_1 10
-#define VA_PMD_1 11
-#define PAGES_NR 12
-#else
-#define PAGES_NR 8
-#endif
-
-#ifndef __ASSEMBLY__
-
-#include <asm/ptrace.h>
-#include <asm/string.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.
- */
-
-/* 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_CODE_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)
-
-/* 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)
-{
- memcpy(newregs, oldregs, sizeof(*newregs));
- newregs->sp = (unsigned long)&(oldregs->sp);
- __asm__ __volatile__(
- "xorl %%eax, %%eax\n\t"
- "movw %%ss, %%ax\n\t"
- :"=a"(newregs->ss));
-}
-
-/*
- * 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)
- crash_fixup_ss_esp(newregs, oldregs);
- else {
- __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));
-
- newregs->ip = (unsigned long)current_text_addr();
- }
-}
-asmlinkage NORET_TYPE void
-relocate_kernel(unsigned long indirection_page,
- unsigned long control_page,
- unsigned long start_address,
- unsigned int has_pae) ATTRIB_NORET;
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* _I386_KEXEC_H */
diff --git a/include/asm-x86/kexec_64.h b/include/asm-x86/kexec_64.h
deleted file mode 100644
index b5f989b..0000000
--- a/include/asm-x86/kexec_64.h
+++ /dev/null
@@ -1,94 +0,0 @@
-#ifndef _X86_64_KEXEC_H
-#define _X86_64_KEXEC_H
-
-#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
-
-#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.
- */
-
-/* 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_CODE_SIZE (4096UL + 4096UL)
-
-/* The native architecture */
-#define KEXEC_ARCH KEXEC_ARCH_X86_64
-
-/*
- * Saving the registers of the cpu on which panic occured in
- * crash_kexec to save a valid sp. The registers of other cpus
- * will be saved in machine_crash_shutdown while shooting down them.
- */
-
-static inline void crash_setup_regs(struct pt_regs *newregs,
- struct pt_regs *oldregs)
-{
- if (oldregs)
- memcpy(newregs, oldregs, sizeof(*newregs));
- 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));
-
- newregs->ip = (unsigned long)current_text_addr();
- }
-}
-
-NORET_TYPE void
-relocate_kernel(unsigned long indirection_page,
- unsigned long page_list,
- unsigned long start_address) ATTRIB_NORET;
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* _X86_64_KEXEC_H */
--
1.5.4.rc0.1083.gf568
--
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