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authorLinus Torvalds <torvalds@linux-foundation.org>2011-09-16 11:28:11 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-09-16 11:28:11 -0700
commitabbe0d3c26c545930492981cbd64be340ff41e05 (patch)
treeb0239fcc508b76e40b411762b1d960066f259324 /arch
parentc455ea4f122d21c91fcf4c36c3f0c08535ba3ce8 (diff)
parent61cca2fab7ecba18f9b9680cd736ef5fa82ad3b1 (diff)
downloadlinux-abbe0d3c26c545930492981cbd64be340ff41e05.tar.gz
Merge branch 'stable/bug.fixes' of git://oss.oracle.com/git/kwilk/xen
* 'stable/bug.fixes' of git://oss.oracle.com/git/kwilk/xen: xen/i386: follow-up to "replace order-based range checking of M2P table by linear one" xen/irq: Alter the locking to use a mutex instead of a spinlock. xen/e820: if there is no dom0_mem=, don't tweak extra_pages. xen: disable PV spinlocks on HVM
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/xen/mmu.c6
-rw-r--r--arch/x86/xen/setup.c10
-rw-r--r--arch/x86/xen/smp.c1
3 files changed, 8 insertions, 9 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 20a61427506..3dd53f997b1 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1721,10 +1721,8 @@ void __init xen_setup_machphys_mapping(void)
machine_to_phys_nr = MACH2PHYS_NR_ENTRIES;
}
#ifdef CONFIG_X86_32
- if ((machine_to_phys_mapping + machine_to_phys_nr)
- < machine_to_phys_mapping)
- machine_to_phys_nr = (unsigned long *)NULL
- - machine_to_phys_mapping;
+ WARN_ON((machine_to_phys_mapping + (machine_to_phys_nr - 1))
+ < machine_to_phys_mapping);
#endif
}
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index c3b8d440873..46d6d21dbdb 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -306,10 +306,12 @@ char * __init xen_memory_setup(void)
sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
extra_limit = xen_get_max_pages();
- if (extra_limit >= max_pfn)
- extra_pages = extra_limit - max_pfn;
- else
- extra_pages = 0;
+ if (max_pfn + extra_pages > extra_limit) {
+ if (extra_limit > max_pfn)
+ extra_pages = extra_limit - max_pfn;
+ else
+ extra_pages = 0;
+ }
extra_pages += xen_return_unused_memory(xen_start_info->nr_pages, &e820);
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index d4fc6d454f8..041d4fe9dfe 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -532,7 +532,6 @@ static void __init xen_hvm_smp_prepare_cpus(unsigned int max_cpus)
WARN_ON(xen_smp_intr_init(0));
xen_init_lock_cpu(0);
- xen_init_spinlocks();
}
static int __cpuinit xen_hvm_cpu_up(unsigned int cpu)