diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2012-05-14 15:30:52 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-05-14 15:30:52 +0200 |
| commit | 4f5a9fd341e8ffd825ecf56155df6fe6c3d732b1 (patch) | |
| tree | ac23c7b80154a476db3882d92f079c50c919e2fa /arch/x86/xen/smp.c | |
| parent | c818f97bc3266f0fbf619f2348d951272f8ac335 (diff) | |
| parent | a0f5e3631b07cabf624e7d818df76d47d9d21017 (diff) | |
| download | blackbird-op-linux-4f5a9fd341e8ffd825ecf56155df6fe6c3d732b1.tar.gz blackbird-op-linux-4f5a9fd341e8ffd825ecf56155df6fe6c3d732b1.zip | |
Merge branch 'imx/pinctrl' into imx/clock
Conflicts:
drivers/mmc/host/sdhci-esdhc-imx.c
drivers/net/ethernet/freescale/fec.c
drivers/spi/spi-imx.c
drivers/tty/serial/imx.c
This resolves dependencies between the pinctrl and clock changes
in imx.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/x86/xen/smp.c')
| -rw-r--r-- | arch/x86/xen/smp.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 5fac6919b957..0503c0c493a9 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -178,6 +178,7 @@ static void __init xen_fill_possible_map(void) static void __init xen_filter_cpu_maps(void) { int i, rc; + unsigned int subtract = 0; if (!xen_initial_domain()) return; @@ -192,8 +193,22 @@ static void __init xen_filter_cpu_maps(void) } else { set_cpu_possible(i, false); set_cpu_present(i, false); + subtract++; } } +#ifdef CONFIG_HOTPLUG_CPU + /* This is akin to using 'nr_cpus' on the Linux command line. + * Which is OK as when we use 'dom0_max_vcpus=X' we can only + * have up to X, while nr_cpu_ids is greater than X. This + * normally is not a problem, except when CPU hotplugging + * is involved and then there might be more than X CPUs + * in the guest - which will not work as there is no + * hypercall to expand the max number of VCPUs an already + * running guest has. So cap it up to X. */ + if (subtract) + nr_cpu_ids = nr_cpu_ids - subtract; +#endif + } static void __init xen_smp_prepare_boot_cpu(void) |
