to prevent wrongly overwriting fixmap that still want to use.
v2: remove prev_map and prev_size in __apci_map_table

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>

---
---
 arch/ia64/kernel/acpi.c        |    4 ++++
 arch/x86/kernel/acpi/boot.c    |   17 +++++++----------
 arch/x86/kernel/early-quirks.c |    4 +++-
 drivers/acpi/osl.c             |    9 +++++++--
 drivers/acpi/tables.c          |   20 ++++++++++++++------
 drivers/acpi/tables/tbfadt.c   |    1 +
 drivers/acpi/tables/tbutils.c  |    7 +++++++
 drivers/acpi/tables/tbxface.c  |   20 +++++++++++++++++---
 drivers/acpi/tables/tbxfroot.c |    3 +++
 include/acpi/acpiosxf.h        |    1 +
 include/acpi/acpixf.h          |    4 ++++
 include/linux/acpi.h           |    1 +
 12 files changed, 69 insertions(+), 22 deletions(-)

Index: linux-2.6/arch/ia64/kernel/acpi.c
===================================================================
--- linux-2.6.orig/arch/ia64/kernel/acpi.c
+++ linux-2.6/arch/ia64/kernel/acpi.c
@@ -176,6 +176,10 @@ char *__init __acpi_map_table(unsigned l
 	return __va(phys_addr);
 }
 
+char *__init __acpi_unmap_table(unsigned long virt_addr, unsigned long size)
+{
+}
+
 /* --------------------------------------------------------------------------
                             Boot-time Table Parsing
    -------------------------------------------------------------------------- */
Index: linux-2.6/arch/x86/kernel/acpi/boot.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/acpi/boot.c
+++ linux-2.6/arch/x86/kernel/acpi/boot.c
@@ -121,21 +121,18 @@ enum acpi_irq_model_id acpi_irq_model =
  */
 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
 {
-	static char *prev_map;
-	static unsigned long prev_size;
-
-	if (prev_map) {
-		early_iounmap(prev_map, prev_size);
-		prev_map = NULL;
-	}
 
 	if (!phys || !size)
 		return NULL;
 
-	prev_size = size;
-	prev_map = early_ioremap(phys, size);
+	return ...
[ message continues ]

so could remove requirement that need to call early_ioremap in exactly revese
order of early_iounmap

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>

---
 arch/x86/mm/ioremap.c       |   77 ++++++++++++++++++++++++++++++++------------
 include/asm-x86/fixmap_32.h |    4 +-
 include/asm-x86/fixmap_64.h |    4 +-
 3 files changed, 61 insertions(+), 24 deletions(-)

Index: linux-2.6/arch/x86/mm/ioremap.c
===================================================================
--- linux-2.6.orig/arch/x86/mm/ioremap.c
+++ linux-2.6/arch/x86/mm/ioremap.c
@@ -565,16 +565,22 @@ static inline void __init early_clear_fi
 		__early_set_fixmap(idx, 0, __pgprot(0));
 }
 
-
-static int __initdata early_ioremap_nested;
-
+static void *prev_map[FIX_BTMAPS_SLOTS] __initdata;
+static unsigned long prev_size[FIX_BTMAPS_SLOTS] __initdata;
 static int __init check_early_ioremap_leak(void)
 {
-	if (!early_ioremap_nested)
+	int count = 0;
+	int i;
+
+	for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
+		if (prev_map[i])
+			count++;
+
+	if (!count)
 		return 0;
 	WARN(1, KERN_WARNING
 	       "Debug warning: early ioremap leak of %d areas detected.\n",
-		early_ioremap_nested);
+		count);
 	printk(KERN_WARNING
 		"please boot with early_ioremap_debug and report the dmesg.\n");
 
@@ -585,15 +591,30 @@ late_initcall(check_early_ioremap_leak);
 static void __init *__early_ioremap(unsigned long phys_addr, unsigned long size, pgprot_t prot)
 {
 	unsigned long offset, last_addr;
-	unsigned int nrpages, nesting;
+	unsigned int nrpages;
 	enum fixed_addresses idx0, idx;
+	int i, slot;
 
 	WARN_ON(system_state != SYSTEM_BOOTING);
 
-	nesting = early_ioremap_nested;
+	slot = -1;
+	for (i = 0; i < FIX_BTMAPS_SLOTS; i++) {
+		if (!prev_map[i]) {
+			slot = i;
+			break;
+		}
+	}
+
+	if (slot < 0) {
+		printk(KERN_INFO "early_iomap(%08lx, %08lx) not found slot\n",
+			 phys_addr, size);
+		WARN_ON(1);
+		return NULL;
+	}
+
 	if (early_ioremap_debug) {
 		printk(KERN_INFO ...
[ message continues ]

v2: use __acpi_unmap_table()

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>

---
 arch/x86/kernel/es7000_32.c      |   28 +++++++++++++++++++++++-----
 arch/x86/mach-generic/es7000.c   |   20 +++++++++++++++-----
 include/asm-x86/es7000/mpparse.h |    1 +
 3 files changed, 39 insertions(+), 10 deletions(-)

Index: linux-2.6/arch/x86/mach-generic/es7000.c
===================================================================
--- linux-2.6.orig/arch/x86/mach-generic/es7000.c
+++ linux-2.6/arch/x86/mach-generic/es7000.c
@@ -47,16 +47,26 @@ static __init int mps_oem_check(struct m
 /* Hook from generic ACPI tables.c */
 static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 {
-	unsigned long oem_addr;
+	unsigned long oem_addr = 0;
+	int check_dsdt;
+	int ret = 0;
+
+	/* check dsdt at first to avoid clear fix_map for oem_addr */
+	check_dsdt = es7000_check_dsdt();
+
 	if (!find_unisys_acpi_oem_table(&oem_addr)) {
-		if (es7000_check_dsdt())
-			return parse_unisys_oem((char *)oem_addr);
+		if (check_dsdt)
+			ret = parse_unisys_oem((char *)oem_addr);
 		else {
 			setup_unisys();
-			return 1;
+			ret = 1;
 		}
+		/*
+		 * we need to unmap it
+		 */
+		unmap_unisys_acpi_oem_table(oem_addr);
 	}
-	return 0;
+	return ret;
 }
 #else
 static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
Index: linux-2.6/arch/x86/kernel/es7000_32.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/es7000_32.c
+++ linux-2.6/arch/x86/kernel/es7000_32.c
@@ -109,6 +109,7 @@ struct oem_table {
 };
 
 extern int find_unisys_acpi_oem_table(unsigned long *oem_addr);
+extern void unmap_unisys_acpi_oem_table(unsigned long oem_addr);
 #endif
 
 struct mip_reg {
@@ -243,21 +244,38 @@ parse_unisys_oem (char *oemptr)
 }
 
 #ifdef CONFIG_ACPI
-int __init
-find_unisys_acpi_oem_table(unsigned long *oem_addr)
+static unsigned long oem_addrX;
+static unsigned long oem_size;
+int __init ...
[ message continues ]