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| author | Ingo Molnar <mingo@kernel.org> | 2016-05-05 09:57:27 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-05-05 09:57:27 +0200 |
| commit | e8c8ce54807b19e90ac84e609b13f7d4e337eab1 (patch) | |
| tree | ae7d65ae17d55aee197b605ce1a193fe594af614 /arch/x86/xen/apic.c | |
| parent | 5db4298133d99b3dfc60d6899ac9df169769c899 (diff) | |
| parent | 04974df8049fc4240d22759a91e035082ccd18b4 (diff) | |
| download | linux-e8c8ce54807b19e90ac84e609b13f7d4e337eab1.tar.bz2 | |
Merge tag 'v4.6-rc6' into locking/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/xen/apic.c')
| -rw-r--r-- | arch/x86/xen/apic.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/x86/xen/apic.c b/arch/x86/xen/apic.c index abf4901c917b..db52a7fafcc2 100644 --- a/arch/x86/xen/apic.c +++ b/arch/x86/xen/apic.c @@ -66,7 +66,7 @@ static u32 xen_apic_read(u32 reg) ret = HYPERVISOR_platform_op(&op); if (ret) - return 0; + op.u.pcpu_info.apic_id = BAD_APICID; return op.u.pcpu_info.apic_id << 24; } @@ -142,6 +142,14 @@ static void xen_silent_inquire(int apicid) { } +static int xen_cpu_present_to_apicid(int cpu) +{ + if (cpu_present(cpu)) + return xen_get_apic_id(xen_apic_read(APIC_ID)); + else + return BAD_APICID; +} + static struct apic xen_pv_apic = { .name = "Xen PV", .probe = xen_apic_probe_pv, @@ -162,7 +170,7 @@ static struct apic xen_pv_apic = { .ioapic_phys_id_map = default_ioapic_phys_id_map, /* Used on 32-bit */ .setup_apic_routing = NULL, - .cpu_present_to_apicid = default_cpu_present_to_apicid, + .cpu_present_to_apicid = xen_cpu_present_to_apicid, .apicid_to_cpu_present = physid_set_mask_of_physid, /* Used on 32-bit */ .check_phys_apicid_present = default_check_phys_apicid_present, /* smp_sanity_check needs it */ .phys_pkg_id = xen_phys_pkg_id, /* detect_ht */ |