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From: Eduardo Habkost <ehabkost@redhat.com>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: "Paolo Bonzini" <pbonzini@redhat.com>,
	"Andreas Färber" <afaerber@suse.de>,
	qemu-devel@nongnu.org
Subject: [Qemu-devel] [PULL 4/7] target-i386: Remove unused APIC ID default code
Date: Mon,  9 Mar 2015 17:40:48 -0300	[thread overview]
Message-ID: <1425933651-20736-5-git-send-email-ehabkost@redhat.com> (raw)
In-Reply-To: <1425933651-20736-1-git-send-email-ehabkost@redhat.com>

The existing apic_id = cpu_index code has no visible effect: the PC code
already initializes the APIC ID according to the topology on
pc_new_cpu(), and linux-user memcpy()s the CPU state (including
cpuid_apic_id) on cpu_copy().

Remove the dead code and simply let APIC ID to to be 0 by default. This
doesn't change behavior of PC because apic-id is already explicitly set,
and doesn't affect linux-user because APIC ID was already always 0.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 target-i386/cpu.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 2f3a450..3e1a0e7 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -2901,7 +2901,6 @@ static void x86_cpu_initfn(Object *obj)
                         NULL, NULL, (void *)cpu->filtered_features, NULL);
 
     cpu->hyperv_spinlock_attempts = HYPERV_SPINLOCK_NEVER_RETRY;
-    env->cpuid_apic_id = x86_cpu_apic_id_from_index(cs->cpu_index);
 
     x86_cpu_load_def(cpu, xcc->cpu_def, &error_abort);
 
-- 
2.1.0

  parent reply	other threads:[~2015-03-09 20:41 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-09 20:40 [Qemu-devel] [PULL 0/7] X86 patches Eduardo Habkost
2015-03-09 20:40 ` [Qemu-devel] [PULL 1/7] target-i386: Move topology.h to include/hw/i386 Eduardo Habkost
2015-03-09 20:40 ` [Qemu-devel] [PULL 2/7] target-i386: Simplify listflags() function Eduardo Habkost
2015-03-09 20:40 ` [Qemu-devel] [PULL 3/7] target-i386: Eliminate unnecessary get_cpuid_vendor() function Eduardo Habkost
2015-03-09 20:40 ` Eduardo Habkost [this message]
2015-03-09 20:40 ` [Qemu-devel] [PULL 5/7] target-i386: Move CPUX86State::cpuid_apic_id to X86CPU::apic_id Eduardo Habkost
2015-03-09 20:40 ` [Qemu-devel] [PULL 6/7] target-i386: Move APIC ID compatibility code to pc.c Eduardo Habkost
2015-03-09 20:40 ` [Qemu-devel] [PULL 7/7] target-i386: Require APIC ID to be explicitly set before CPU realize Eduardo Habkost
2015-03-10 11:44 ` [Qemu-devel] [PULL 0/7] X86 patches Peter Maydell
2015-03-10 14:16   ` Eduardo Habkost
2015-03-10 14:19     ` Peter Maydell
2015-03-10 19:45       ` Eduardo Habkost
2015-03-11 12:50         ` Peter Maydell
2015-03-10 17:57     ` Eduardo Habkost

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