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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2013-02-18 22:58:14 -0300 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2013-02-18 23:05:19 -0300 |
| commit | ed55705dd5008b408c48a8459b8b34b01f3de985 (patch) | |
| tree | 212761009189fb205e4ca0c99b97ae5374fea8bc /arch/x86/kernel/kvmclock.c | |
| parent | 899f7b26bc4549cd5da8ac7688ed7e9d017f21b5 (diff) | |
| download | linux-ed55705dd5008b408c48a8459b8b34b01f3de985.tar.gz linux-ed55705dd5008b408c48a8459b8b34b01f3de985.tar.bz2 linux-ed55705dd5008b408c48a8459b8b34b01f3de985.zip | |
x86: pvclock kvm: align allocation size to page size
To match whats mapped via vsyscalls to userspace.
Reported-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/kernel/kvmclock.c')
| -rw-r--r-- | arch/x86/kernel/kvmclock.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c index 220a360010f8..5bedbdddf1f2 100644 --- a/arch/x86/kernel/kvmclock.c +++ b/arch/x86/kernel/kvmclock.c @@ -218,6 +218,9 @@ static void kvm_shutdown(void) void __init kvmclock_init(void) { unsigned long mem; + int size; + + size = PAGE_ALIGN(sizeof(struct pvclock_vsyscall_time_info)*NR_CPUS); if (!kvm_para_available()) return; @@ -231,16 +234,14 @@ void __init kvmclock_init(void) printk(KERN_INFO "kvm-clock: Using msrs %x and %x", msr_kvm_system_time, msr_kvm_wall_clock); - mem = memblock_alloc(sizeof(struct pvclock_vsyscall_time_info)*NR_CPUS, - PAGE_SIZE); + mem = memblock_alloc(size, PAGE_SIZE); if (!mem) return; hv_clock = __va(mem); if (kvm_register_clock("boot clock")) { hv_clock = NULL; - memblock_free(mem, - sizeof(struct pvclock_vsyscall_time_info)*NR_CPUS); + memblock_free(mem, size); return; } pv_time_ops.sched_clock = kvm_clock_read; @@ -275,7 +276,7 @@ int __init kvm_setup_vsyscall_timeinfo(void) struct pvclock_vcpu_time_info *vcpu_time; unsigned int size; - size = sizeof(struct pvclock_vsyscall_time_info)*NR_CPUS; + size = PAGE_ALIGN(sizeof(struct pvclock_vsyscall_time_info)*NR_CPUS); preempt_disable(); cpu = smp_processor_id(); |