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Re: [Xen-devel] [PATCH v5 04/12] x86/apic: Move logical APIC ID away from apic_bsp_setup()
- To: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
- From: Dou Liyang <douly.fnst@xxxxxxxxxxxxxx>
- Date: Mon, 3 Jul 2017 10:02:45 +0800
- Cc: bhe@xxxxxxxxxx, peterz@xxxxxxxxxxxxx, izumi.taku@xxxxxxxxxxxxxx, x86@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, ebiederm@xxxxxxxxxxxx, hpa@xxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, boris.ostrovsky@xxxxxxxxxx, mingo@xxxxxxxxxx
- Delivery-date: Mon, 03 Jul 2017 02:03:03 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
Hi, Thomas
At 07/03/2017 01:54 AM, Thomas Gleixner wrote:
On Fri, 30 Jun 2017, Dou Liyang wrote:
/*
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 93f0cda..d6721f0 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1347,8 +1347,11 @@ void __init native_smp_prepare_cpus(unsigned int
max_cpus)
}
default_setup_apic_routing();
- cpu0_logical_apicid = apic_bsp_setup(false);
-
+ apic_bsp_setup(false);
+ if (x2apic_mode)
+ cpu0_logical_apicid = apic_read(APIC_LDR);
+ else
+ cpu0_logical_apicid = GET_APIC_LOGICAL_ID(apic_read(APIC_LDR));
Can you please move that into a seperate helper function?
Yes, it will be a separate helper function in the next version.
Thanks,
dou.
/* Setup local timer */
x86_init.timers.setup_percpu_clockev();
--
2.5.5
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