x86: make e820_saved have update from setup_data

seperate reserve_setup_data into e820_reserved_setup_data,
and reserve_early_setup_data.

So could use e820_reserved_setup_data to backup e820 with setup_data.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Bernhard Walle <bwalle@suse.de>
Cc: Ying Huang <ying.huang@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index cfcfbefee0b9e7ee8863f78610f9800be033fd36..bea8ae77d0599831ff17eb22cd35dc4a603b3279 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -394,11 +394,10 @@ static void __init parse_setup_data(void)
        }
 }
 
-static void __init reserve_setup_data(void)
+static void __init e820_reserve_setup_data(void)
 {
        struct setup_data *data;
        u64 pa_data;
-       char buf[32];
        int found = 0;
 
        if (boot_params.hdr.version < 0x0209)
@@ -406,8 +405,6 @@ static void __init reserve_setup_data(void)
        pa_data = boot_params.hdr.setup_data;
        while (pa_data) {
                data = early_ioremap(pa_data, sizeof(*data));
-               sprintf(buf, "setup data %x", data->type);
-               reserve_early(pa_data, pa_data+sizeof(*data)+data->len, buf);
                e820_update_range(pa_data, sizeof(*data)+data->len,
                         E820_RAM, E820_RESERVED_KERN);
                found = 1;
@@ -418,10 +415,29 @@ static void __init reserve_setup_data(void)
                return;
 
        sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+       memcpy(&e820_saved, &e820, sizeof(struct e820map));
        printk(KERN_INFO "extended physical RAM map:\n");
        e820_print_map("reserve setup_data");
 }
 
+static void __init reserve_early_setup_data(void)
+{
+       struct setup_data *data;
+       u64 pa_data;
+       char buf[32];
+
+       if (boot_params.hdr.version < 0x0209)
+               return;
+       pa_data = boot_params.hdr.setup_data;
+       while (pa_data) {
+               data = early_ioremap(pa_data, sizeof(*data));
+               sprintf(buf, "setup data %x", data->type);
+               reserve_early(pa_data, pa_data+sizeof(*data)+data->len, buf);
+               pa_data = data->next;
+               early_iounmap(data, sizeof(*data));
+       }
+}
+
 /*
  * --------- Crashkernel reservation ------------------------------
  */
@@ -626,6 +642,8 @@ void __init setup_arch(char **cmdline_p)
 
        setup_memory_map();
        parse_setup_data();
+       /* update the e820_saved too */
+       e820_reserve_setup_data();
 
        copy_edd();
 
@@ -656,7 +674,7 @@ void __init setup_arch(char **cmdline_p)
        parse_early_param();
 
        /* after early param, so could get panic from serial */
-       reserve_setup_data();
+       reserve_early_setup_data();
 
        if (acpi_mps_check()) {
 #ifdef CONFIG_X86_LOCAL_APIC