[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [Patch 1/2]xen boot_cpu_data initialize
On Mon, 2015-03-09 at 12:48 +0530, Uma Sharma wrote: > This patch inserts some boot data initilization in xen/arch and > function definition in xen/include. > Signed-off-by: Uma Sharma <uma.sharma523@xxxxxxxxx> > So, this is basically the same as patch 1 from this series of mine: http://lists.xen.org/archives/html/xen-devel/2014-08/msg02168.html http://lists.xen.org/archives/html/xen-devel/2014-08/msg02166.html which I still need to rework basing on the comment I got (see the rest of the thread). I haven't done this yet, but will soon and, if Uma is ok with it, I'll add to that the second patch of this series (of course, rataining her Signed-off-by) when sending it. I've been sidetracked by a bunch of other stuff, but I've got time now, and I'll do it right away, is it fine Uma (and others, of course)? Regards, Dario > diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c > index d316212..4f3ce15 100644 > --- a/xen/arch/x86/setup.c > +++ b/xen/arch/x86/setup.c > @@ -1259,6 +1259,11 @@ void __init noreturn __start_xen(unsigned long mbi_p) > microcode_grab_module(module_map, mbi, bootstrap_map); > > timer_init(); > + /* > + * Identify the boot CPU, in case the scheduler initialization > + * needs to know about it (e.g., topology, etc.) > + */ > + identify_cpu(&boot_cpu_data); > > init_idle_domain(); > > @@ -1270,8 +1275,6 @@ void __init noreturn __start_xen(unsigned long mbi_p) > > arch_init_memory(); > > - identify_cpu(&boot_cpu_data); > - > if ( cpu_has_fxsr ) > set_in_cr4(X86_CR4_OSFXSR); > if ( cpu_has_xmm ) > diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c > index 7ae561c..b4c4cc2 100644 > --- a/xen/arch/x86/smpboot.c > +++ b/xen/arch/x86/smpboot.c > @@ -59,7 +59,8 @@ DEFINE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_core_mask); > cpumask_t cpu_online_map __read_mostly; > EXPORT_SYMBOL(cpu_online_map); > > -struct cpuinfo_x86 cpu_data[NR_CPUS]; > +struct cpuinfo_x86 cpu_data[NR_CPUS] = > + { [0 ... NR_CPUS-1] = { .phys_proc_id=-1, .cpu_core_id=-1 } }; > > u32 x86_cpu_to_apicid[NR_CPUS] __read_mostly = > { [0 ... NR_CPUS-1] = BAD_APICID }; > diff --git a/xen/include/asm-x86/processor.h b/xen/include/asm-x86/processor.h > index 87d80ff..6ec9588 100644 > --- a/xen/include/asm-x86/processor.h > +++ b/xen/include/asm-x86/processor.h > @@ -214,7 +214,9 @@ extern void detect_extended_topology(struct cpuinfo_x86 > *c); > > extern void detect_ht(struct cpuinfo_x86 *c); > > +#define boot_cpu_to_core() (boot_cpu_data.cpu_core_id) > #define cpu_to_core(_cpu) (cpu_data[_cpu].cpu_core_id) > +#define boot_cpu_to_socket() (boot_cpu_data.phys_proc_id) > #define cpu_to_socket(_cpu) (cpu_data[_cpu].phys_proc_id) > > unsigned int apicid_to_socket(unsigned int); Attachment:
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