From: Cyrill Gorcunov <gorcunov@gmail.com>
To: macro@linux-mips.org, mingo@elte.hu, tglx@linutronix.de
Cc: hpa@zytor.com, yhlu.kernel@gmail.com,
linux-kernel@vger.kernel.org,
Cyrill Gorcunov <gorcunov@gmail.com>
Subject: [patch 6/8] x86: apic - unify verify_local_APIC
Date: Thu, 01 Jan 1970 03:00:06 +0300 [thread overview]
Message-ID: <20080814184652.179229281@gmail.com> (raw)
In-Reply-To: 20080814183428.550709025@gmail.com
[-- Attachment #1: 0010-x86-apic-unify-verify_local_APIC.patch --]
[-- Type: text/plain, Size: 756 bytes --]
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
---
Index: linux-2.6.git/arch/x86/kernel/apic_32.c
===================================================================
--- linux-2.6.git.orig/arch/x86/kernel/apic_32.c 2008-08-14 22:18:00.000000000 +0400
+++ linux-2.6.git/arch/x86/kernel/apic_32.c 2008-08-14 22:21:49.000000000 +0400
@@ -882,6 +882,12 @@ int __init verify_local_APIC(void)
*/
reg0 = apic_read(APIC_ID);
apic_printk(APIC_DEBUG, "Getting ID: %x\n", reg0);
+ apic_write(APIC_ID, reg0 ^ APIC_ID_MASK);
+ reg1 = apic_read(APIC_ID);
+ apic_printk(APIC_DEBUG, "Getting ID: %x\n", reg1);
+ apic_write(APIC_ID, reg0);
+ if (reg1 != (reg0 ^ APIC_ID_MASK))
+ return 0;
/*
* The next two are just to see if we have sane values.
--
next prev parent reply other threads:[~2008-08-14 18:48 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-14 18:34 [patch 0/8] [RFC -tip] another one step toward APIC merging Cyrill Gorcunov
1970-01-01 0:00 ` [patch 1/8] x86: apic - use SET_APIC_DEST_FIELD instead of hardcoded shift Cyrill Gorcunov
1970-01-01 0:00 ` [patch 2/8] x86: apic - unify disable_apic_timer Cyrill Gorcunov
1970-01-01 0:00 ` [patch 3/8] x86: apic - unify __setup_APIC_LVTT Cyrill Gorcunov
1970-01-01 0:00 ` [patch 4/8] x86: apic - do not clear APIC twice in lapic_shutdown Cyrill Gorcunov
1970-01-01 0:00 ` [patch 5/8] x86: apic - get rid of local_apic_timer_verify_ok Cyrill Gorcunov
1970-01-01 0:00 ` Cyrill Gorcunov [this message]
1970-01-01 0:00 ` [patch 7/8] x86: apic - unify sync_Arb_IDs Cyrill Gorcunov
2008-08-14 19:41 ` Maciej W. Rozycki
2008-08-14 20:10 ` Cyrill Gorcunov
1970-01-01 0:00 ` [patch 8/8] x86: apic - unify init_bsp_APIC Cyrill Gorcunov
2008-08-14 19:44 ` Maciej W. Rozycki
2008-08-15 6:41 ` Cyrill Gorcunov
2008-08-15 11:51 ` Ingo Molnar
2008-08-15 12:15 ` Maciej W. Rozycki
2008-08-15 13:48 ` Ingo Molnar
2008-08-15 14:45 ` Cyrill Gorcunov
2008-08-15 14:47 ` Ingo Molnar
2008-08-15 15:31 ` Maciej W. Rozycki
2008-08-15 16:35 ` Cyrill Gorcunov
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