Linux Virtualization - Apr 2007 - [RFC/PATCH PV_OPS X86_64 09/17] paravirt_ops - bios changes

plain text document attachment (xx-paravirt-bios.patch)
Add an interface for paravirt ops and e820.

Signed-off-by: Steven Rostedt srostedt@redhat.com
Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>



Index: clean-start/arch/x86_64/kernel/e820.c
==================================================================---
clean-start.orig/arch/x86_64/kernel/e820.c
+++ clean-start/arch/x86_64/kernel/e820.c
@@ -567,7 +567,7 @@ void __init setup_memory_region(void)
 	if (copy_e820_map(E820_MAP, E820_MAP_NR) < 0)
 		early_panic("Cannot find a valid memory map");
 	printk(KERN_INFO "BIOS-provided physical RAM map:\n");
-	e820_print_map("BIOS-e820");
+	e820_print_map(MAP_TYPE_STR);
 }
 
 static int __init parse_memopt(char *p)
Index: clean-start/include/asm-x86_64/e820.h
==================================================================---
clean-start.orig/include/asm-x86_64/e820.h
+++ clean-start/include/asm-x86_64/e820.h
@@ -55,7 +55,22 @@ extern void finish_e820_parsing(void);
 
 extern struct e820map e820;
 
+#define EBDA_ADDR_POINTER 0x40E
+static inline void native_ebda_info(unsigned *addr,unsigned *size)
+{
+	*addr = *(unsigned short *)EBDA_ADDR_POINTER;
+	*addr <<= 4;
+        *size = *(unsigned short *)(unsigned long)*addr;
+}
+
 extern unsigned ebda_addr, ebda_size;
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else
+#define ebda_info native_ebda_info
+#define MAP_TYPE_STR "BIOS-e820"
+#endif
+
 #endif/*!__ASSEMBLY__*/
 
 #endif/*__E820_HEADER*/

--