Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip:
  x86: Fix double enable_IR_x2apic() call on SMP kernel on !SMP boards
  x86: Increase CONFIG_NODES_SHIFT max to 10
  ibft, x86: Change reserve_ibft_region() to find_ibft_region()
  x86, hpet: Fix bug in RTC emulation
  x86, hpet: Erratum workaround for read after write of HPET comparator
  bootmem, x86: Fix 32bit numa system without RAM on node 0
  nobootmem, x86: Fix 32bit numa system without RAM on node 0
  x86: Handle overlapping mptables
  x86: Make e820_remove_range to handle all covered case
  x86-32, resume: do a global tlb flush in S4 resume

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0eacb1f..9458685 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1216,8 +1216,8 @@ config NUMA_EMU
 
 config NODES_SHIFT
        int "Maximum NUMA Nodes (as a power of 2)" if !MAXSMP
-       range 1 9
-       default "9" if MAXSMP
+       range 1 10
+       default "10" if MAXSMP
        default "6" if X86_64
        default "4" if X86_NUMAQ
        default "3"

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 00187f1..e5a4a1e 100644 (file)
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1640,8 +1640,10 @@ int __init APIC_init_uniprocessor(void)
        }
 #endif
 
+#ifndef CONFIG_SMP
        enable_IR_x2apic();
        default_setup_apic_routing();
+#endif
 
        verify_local_APIC();
        connect_bsp_APIC();

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 740b440..7bca3c6 100644 (file)
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -519,29 +519,45 @@ u64 __init e820_remove_range(u64 start, u64 size, unsigned old_type,
        printk(KERN_DEBUG "e820 remove range: %016Lx - %016Lx ",
                       (unsigned long long) start,
                       (unsigned long long) end);
-       e820_print_type(old_type);
+       if (checktype)
+               e820_print_type(old_type);
        printk(KERN_CONT "\n");
 
        for (i = 0; i < e820.nr_map; i++) {
                struct e820entry *ei = &e820.map[i];
                u64 final_start, final_end;
+               u64 ei_end;
 
                if (checktype && ei->type != old_type)
                        continue;
+
+               ei_end = ei->addr + ei->size;
                /* totally covered? */
-               if (ei->addr >= start &&
-                   (ei->addr + ei->size) <= (start + size)) {
+               if (ei->addr >= start && ei_end <= end) {
                        real_removed_size += ei->size;
                        memset(ei, 0, sizeof(struct e820entry));
                        continue;
                }
+
+               /* new range is totally covered? */
+               if (ei->addr < start && ei_end > end) {
+                       e820_add_region(end, ei_end - end, ei->type);
+                       ei->size = start - ei->addr;
+                       real_removed_size += size;
+                       continue;
+               }
+
                /* partially covered */
                final_start = max(start, ei->addr);
-               final_end = min(start + size, ei->addr + ei->size);
+               final_end = min(end, ei_end);
                if (final_start >= final_end)
                        continue;
                real_removed_size += final_end - final_start;
 
+               /*
+                * left range could be head or tail, so need to update
+                * size at first.
+                */
                ei->size -= final_end - final_start;
                if (ei->addr < final_start)
                        continue;

diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index d10a7e7..23b4ecd 100644 (file)
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -400,9 +400,15 @@ static int hpet_next_event(unsigned long delta,
         * then we might have a real hardware problem. We can not do
         * much about it here, but at least alert the user/admin with
         * a prominent warning.
+        * An erratum on some chipsets (ICH9,..), results in comparator read
+        * immediately following a write returning old value. Workaround
+        * for this is to read this value second time, when first
+        * read returns old value.
         */
-       WARN_ONCE(hpet_readl(HPET_Tn_CMP(timer)) != cnt,
+       if (unlikely((u32)hpet_readl(HPET_Tn_CMP(timer)) != cnt)) {
+               WARN_ONCE(hpet_readl(HPET_Tn_CMP(timer)) != cnt,
                  KERN_WARNING "hpet: compare register read back failed.\n");
+       }
 
        return (s32)(hpet_readl(HPET_COUNTER) - cnt) >= 0 ? -ETIME : 0;
 }
@@ -1144,6 +1150,7 @@ int hpet_set_periodic_freq(unsigned long freq)
                do_div(clc, freq);
                clc >>= hpet_clockevent.shift;
                hpet_pie_delta = clc;
+               hpet_pie_limit = 0;
        }
        return 1;
 }

diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index a2c1edd..e81030f 100644 (file)
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -664,7 +664,7 @@ static void __init smp_reserve_memory(struct mpf_intel *mpf)
 {
        unsigned long size = get_mpc_size(mpf->physptr);
 
-       reserve_early(mpf->physptr, mpf->physptr+size, "MP-table mpc");
+       reserve_early_overlap_ok(mpf->physptr, mpf->physptr+size, "MP-table mpc");
 }
 
 static int __init smp_scan_config(unsigned long base, unsigned long length)
@@ -693,7 +693,7 @@ static int __init smp_scan_config(unsigned long base, unsigned long length)
                               mpf, (u64)virt_to_phys(mpf));
 
                        mem = virt_to_phys(mpf);
-                       reserve_early(mem, mem + sizeof(*mpf), "MP-table mpf");
+                       reserve_early_overlap_ok(mem, mem + sizeof(*mpf), "MP-table mpf");
                        if (mpf->physptr)
                                smp_reserve_memory(mpf);
 

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 9570541..c4851ef 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -607,6 +607,16 @@ static int __init setup_elfcorehdr(char *arg)
 early_param("elfcorehdr", setup_elfcorehdr);
 #endif
 
+static __init void reserve_ibft_region(void)
+{
+       unsigned long addr, size = 0;
+
+       addr = find_ibft_region(&size);
+
+       if (size)
+               reserve_early_overlap_ok(addr, addr + size, "ibft");
+}
+
 #ifdef CONFIG_X86_RESERVE_LOW_64K
 static int __init dmi_low_memory_corruption(const struct dmi_system_id *d)
 {
@@ -909,6 +919,8 @@ void __init setup_arch(char **cmdline_p)
         */
        find_smp_config();
 
+       reserve_ibft_region();
+
        reserve_trampoline_memory();
 
 #ifdef CONFIG_ACPI_SLEEP
@@ -976,8 +988,6 @@ void __init setup_arch(char **cmdline_p)
 
        dma32_reserve_bootmem();
 
-       reserve_ibft_region();
-
 #ifdef CONFIG_KVM_CLOCK
        kvmclock_init();
 #endif

diff --git a/arch/x86/power/hibernate_asm_32.S b/arch/x86/power/hibernate_asm_32.S
index b641388..ad47dae 100644 (file)
--- a/arch/x86/power/hibernate_asm_32.S
+++ b/arch/x86/power/hibernate_asm_32.S
@@ -27,10 +27,17 @@ ENTRY(swsusp_arch_suspend)
        ret
 
 ENTRY(restore_image)
+       movl    mmu_cr4_features, %ecx
        movl    resume_pg_dir, %eax
        subl    $__PAGE_OFFSET, %eax
        movl    %eax, %cr3
 
+       jecxz   1f      # cr4 Pentium and higher, skip if zero
+       andl    $~(X86_CR4_PGE), %ecx
+       movl    %ecx, %cr4;  # turn off PGE
+       movl    %cr3, %eax;  # flush TLB
+       movl    %eax, %cr3
+1:
        movl    restore_pblist, %edx
        .p2align 4,,7
 
@@ -54,16 +61,8 @@ done:
        movl    $swapper_pg_dir, %eax
        subl    $__PAGE_OFFSET, %eax
        movl    %eax, %cr3
-       /* Flush TLB, including "global" things (vmalloc) */
        movl    mmu_cr4_features, %ecx
        jecxz   1f      # cr4 Pentium and higher, skip if zero
-       movl    %ecx, %edx
-       andl    $~(X86_CR4_PGE), %edx
-       movl    %edx, %cr4;  # turn off PGE
-1:
-       movl    %cr3, %eax;  # flush TLB
-       movl    %eax, %cr3
-       jecxz   1f      # cr4 Pentium and higher, skip if zero
        movl    %ecx, %cr4;  # turn PGE back on
 1:
 

diff --git a/drivers/firmware/iscsi_ibft_find.c b/drivers/firmware/iscsi_ibft_find.c
index 134dd73..d6470ef 100644 (file)
--- a/drivers/firmware/iscsi_ibft_find.c
+++ b/drivers/firmware/iscsi_ibft_find.c
@@ -51,7 +51,7 @@ EXPORT_SYMBOL_GPL(ibft_addr);
  * Routine used to find the iSCSI Boot Format Table. The logical
  * kernel address is set in the ibft_addr global variable.
  */
-void __init reserve_ibft_region(void)
+unsigned long __init find_ibft_region(unsigned long *sizep)
 {
        unsigned long pos;
        unsigned int len = 0;
@@ -77,6 +77,11 @@ void __init reserve_ibft_region(void)
                        }
                }
        }
-       if (ibft_addr)
-               reserve_bootmem(pos, PAGE_ALIGN(len), BOOTMEM_DEFAULT);
+       if (ibft_addr) {
+               *sizep = PAGE_ALIGN(len);
+               return pos;
+       }
+
+       *sizep = 0;
+       return 0;
 }

diff --git a/include/linux/iscsi_ibft.h b/include/linux/iscsi_ibft.h
index 6092487..d2e4042 100644 (file)
--- a/include/linux/iscsi_ibft.h
+++ b/include/linux/iscsi_ibft.h
@@ -42,9 +42,13 @@ extern struct ibft_table_header *ibft_addr;
  * mapped address is set in the ibft_addr variable.
  */
 #ifdef CONFIG_ISCSI_IBFT_FIND
-extern void __init reserve_ibft_region(void);
+unsigned long find_ibft_region(unsigned long *sizep);
 #else
-static inline void reserve_ibft_region(void) { }
+static inline unsigned long find_ibft_region(unsigned long *sizep)
+{
+       *sizep = 0;
+       return 0;
+}
 #endif
 
 #endif /* ISCSI_IBFT_H */

diff --git a/mm/bootmem.c b/mm/bootmem.c
index eff2242..58c66cc 100644 (file)
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -304,9 +304,22 @@ unsigned long __init free_all_bootmem_node(pg_data_t *pgdat)
 unsigned long __init free_all_bootmem(void)
 {
 #ifdef CONFIG_NO_BOOTMEM
-       return free_all_memory_core_early(NODE_DATA(0)->node_id);
+       /*
+        * We need to use MAX_NUMNODES instead of NODE_DATA(0)->node_id
+        *  because in some case like Node0 doesnt have RAM installed
+        *  low ram will be on Node1
+        * Use MAX_NUMNODES will make sure all ranges in early_node_map[]
+        *  will be used instead of only Node0 related
+        */
+       return free_all_memory_core_early(MAX_NUMNODES);
 #else
-       return free_all_bootmem_core(NODE_DATA(0)->bdata);
+       unsigned long total_pages = 0;
+       bootmem_data_t *bdata;
+
+       list_for_each_entry(bdata, &bdata_list, list)
+               total_pages += free_all_bootmem_core(bdata);
+
+       return total_pages;
 #endif
 }