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authorEric W. Biederman <ebiederm@xmission.com>2005-06-25 14:57:56 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-25 16:24:49 -0700
commit5033cba087f6ac773002123aafbea1aad4267682 (patch)
treefa0301c28c004e81d3aad597f23ea2407db8396c /include/asm-i386
parentdd2a13054ffc25783a74afb5e4a0f2115e45f9cd (diff)
[PATCH] kexec: x86 kexec core
This is the i386 implementation of kexec. Signed-off-by: Eric Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-i386')
-rw-r--r--include/asm-i386/kexec.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/include/asm-i386/kexec.h b/include/asm-i386/kexec.h
new file mode 100644
index 000000000000..a1599b55d62d
--- /dev/null
+++ b/include/asm-i386/kexec.h
@@ -0,0 +1,28 @@
+#ifndef _I386_KEXEC_H
+#define _I386_KEXEC_H
+
+#include <asm/fixmap.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.
+ *
+ * Someone correct me if FIXADDR_START - PAGEOFFSET is not the correct
+ * calculation for the amount of memory directly mappable into the
+ * kernel memory space.
+ */
+
+/* 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
+
+#endif /* _I386_KEXEC_H */