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xen: set cpu capabilities from xen_start_kernel()

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There is no need to set the same capabilities for each cpu
individually. This can easily be done for all cpus when starting the
kernel.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Juergen Gross 2017-04-13 08:55:41 +02:00
parent 31d47266c6
commit 0808e80cb7
1 changed files with 7 additions and 7 deletions
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14
arch/x86/xen/enlighten_pv.c
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@ -327,6 +327,12 @@ static void __init xen_init_cpuid_mask(void)
cpuid_leaf1_ecx_set_mask = (1 << (X86_FEATURE_MWAIT % 32)); cpuid_leaf1_ecx_set_mask = (1 << (X86_FEATURE_MWAIT % 32));
} }
static void __init xen_init_capabilities(void)
{
setup_clear_cpu_cap(X86_BUG_SYSRET_SS_ATTRS);
setup_force_cpu_cap(X86_FEATURE_XENPV);
}
static void xen_set_debugreg(int reg, unsigned long val) static void xen_set_debugreg(int reg, unsigned long val)
{ {
HYPERVISOR_set_debugreg(reg, val); HYPERVISOR_set_debugreg(reg, val);
@ -1318,6 +1324,7 @@ asmlinkage __visible void __init xen_start_kernel(void)
xen_init_irq_ops(); xen_init_irq_ops();
xen_init_cpuid_mask(); xen_init_cpuid_mask();
xen_init_capabilities();
#ifdef CONFIG_X86_LOCAL_APIC #ifdef CONFIG_X86_LOCAL_APIC
/* /*
@ -1506,16 +1513,9 @@ static uint32_t __init xen_platform_pv(void)
return 0; return 0;
} }
static void xen_set_cpu_features(struct cpuinfo_x86 *c)
{
clear_cpu_bug(c, X86_BUG_SYSRET_SS_ATTRS);
set_cpu_cap(c, X86_FEATURE_XENPV);
}
const struct hypervisor_x86 x86_hyper_xen_pv = { const struct hypervisor_x86 x86_hyper_xen_pv = {
.name = "Xen PV", .name = "Xen PV",
.detect = xen_platform_pv, .detect = xen_platform_pv,
.set_cpu_features = xen_set_cpu_features,
.pin_vcpu = xen_pin_vcpu, .pin_vcpu = xen_pin_vcpu,
}; };
EXPORT_SYMBOL(x86_hyper_xen_pv); EXPORT_SYMBOL(x86_hyper_xen_pv);