From: Jan Kiszka <jan.kiszka@siemens.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
x86 <x86@kernel.org>
Subject: [PATCH] x86/x2apic: acpi_gbl_FADT existence depends on CONFIG_ACPI
Date: Mon, 04 May 2015 17:58:00 +0200 [thread overview]
Message-ID: <55479708.2000104@siemens.com> (raw)
If ACPI is disabled, acpi_gbl_FADT is not available, and and the build
breaks.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
arch/x86/kernel/apic/x2apic_phys.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c
index 6fae733..3ffd925 100644
--- a/arch/x86/kernel/apic/x2apic_phys.c
+++ b/arch/x86/kernel/apic/x2apic_phys.c
@@ -21,11 +21,13 @@ early_param("x2apic_phys", set_x2apic_phys_mode);
static bool x2apic_fadt_phys(void)
{
+#ifdef CONFIG_ACPI
if ((acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) &&
(acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL)) {
printk(KERN_DEBUG "System requires x2apic physical mode\n");
return true;
}
+#endif
return false;
}
--
2.1.4
next reply other threads:[~2015-05-04 15:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-04 15:58 Jan Kiszka [this message]
2015-05-05 12:03 ` [tip:x86/apic] x86/x2apic: Acpi_gbl_FADT existence depends on CONFIG_ACPI tip-bot for Jan Kiszka
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