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

Pull x86 fixes from Ingo Molnar:
 "This contains two fixes: a boot fix for older SGI/UV systems, and an
  APIC calibration fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/tsc: Read all ratio bits from MSR_PLATFORM_INFO
  x86/platform/UV: Bring back the call to map_low_mmrs in uv_system_init

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 8f4942e2bcbb21584a78225b1208adefe86e0aa9..d7ce96a7dacaedc630a0e9a5ef5b761edbd0ffc7 100644 (file)
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -891,9 +891,7 @@ void __init uv_system_init(void)
        }
        pr_info("UV: Found %s hub\n", hub);
 
-       /* We now only need to map the MMRs on UV1 */
-       if (is_uv1_hub())
-               map_low_mmrs();
+       map_low_mmrs();
 
        m_n_config.v = uv_read_local_mmr(UVH_RH_GAM_CONFIG_MMR );
        m_val = m_n_config.s.m_skt;

diff --git a/arch/x86/kernel/tsc_msr.c b/arch/x86/kernel/tsc_msr.c
index 92ae6acac8a7fbcb9b91cb386b3c23015c5377ea..6aa0f4d9eea6816bbf0c78514e0b76d8f4dc7def 100644 (file)
--- a/arch/x86/kernel/tsc_msr.c
+++ b/arch/x86/kernel/tsc_msr.c
@@ -92,7 +92,7 @@ unsigned long try_msr_calibrate_tsc(void)
 
        if (freq_desc_tables[cpu_index].msr_plat) {
                rdmsr(MSR_PLATFORM_INFO, lo, hi);
-               ratio = (lo >> 8) & 0x1f;
+               ratio = (lo >> 8) & 0xff;
        } else {
                rdmsr(MSR_IA32_PERF_STATUS, lo, hi);
                ratio = (hi >> 8) & 0x1f;