From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60375) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKgCo-00068B-UA for qemu-devel@nongnu.org; Wed, 06 Jul 2016 02:21:07 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bKgCo-000477-0c for qemu-devel@nongnu.org; Wed, 06 Jul 2016 02:21:06 -0400 Received: from mx1.redhat.com ([209.132.183.28]:58526) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKgCn-00046p-Rf for qemu-devel@nongnu.org; Wed, 06 Jul 2016 02:21:05 -0400 From: Igor Mammedov Date: Wed, 6 Jul 2016 08:20:37 +0200 Message-Id: <1467786055-85835-2-git-send-email-imammedo@redhat.com> In-Reply-To: <1467786055-85835-1-git-send-email-imammedo@redhat.com> References: <1467786055-85835-1-git-send-email-imammedo@redhat.com> Subject: [Qemu-devel] [PATCH v3 01/19] target-i386: cpu: use uint32_t for X86CPU.apic_id List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: pkrempa@redhat.com, ehabkost@redhat.com, mst@redhat.com, armbru@redhat.com, eduardo.otubo@profitbricks.com, marcel@redhat.com, pbonzini@redhat.com, rth@twiddle.net Redo 9886e834 (target-i386: Require APIC ID to be explicitly set before CPU realize) in another way that doesn't use int64_t to detect if apic-id property has been set. Use the fact that 0xFFFFFFFF is the broadcast value that a CPU can't have and set default uint32_t apic_id to it instead of using int64_t. Later uint32_t apic_id will be used to drop custom property setter/getter in favor of static property. Signed-off-by: Igor Mammedov --- target-i386/cpu.c | 4 ++-- target-i386/cpu.h | 7 ++++++- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/target-i386/cpu.c b/target-i386/cpu.c index 5c69c43..e7319e3 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c @@ -2883,7 +2883,7 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp) goto out; } - if (cpu->apic_id < 0) { + if (cpu->apic_id == UNASSIGNED_APIC_ID) { error_setg(errp, "apic-id property was not initialized properly"); return; } @@ -3154,7 +3154,7 @@ static void x86_cpu_initfn(Object *obj) #ifndef CONFIG_USER_ONLY /* Any code creating new X86CPU objects have to set apic-id explicitly */ - cpu->apic_id = -1; + cpu->apic_id = UNASSIGNED_APIC_ID; #endif for (w = 0; w < FEATURE_WORDS; w++) { diff --git a/target-i386/cpu.h b/target-i386/cpu.h index 738958e..00de199 100644 --- a/target-i386/cpu.h +++ b/target-i386/cpu.h @@ -835,6 +835,11 @@ typedef struct { #define NB_OPMASK_REGS 8 +/* CPU can't have 0xFFFFFFFF APIC ID, use that value to distinguish + * that APIC ID hasn't been set yet + */ +#define UNASSIGNED_APIC_ID 0xFFFFFFFF + typedef union X86LegacyXSaveArea { struct { uint16_t fcw; @@ -1163,7 +1168,7 @@ struct X86CPU { bool expose_kvm; bool migratable; bool host_features; - int64_t apic_id; + uint32_t apic_id; /* if true the CPUID code directly forward host cache leaves to the guest */ bool cache_info_passthrough; -- 2.7.0