From: Jason Uhlenkott <jasonuhl@sgi.com>
To: ak@suse.de
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] x86_64: fix IRQ vector reservations
Date: Tue, 3 Jan 2006 15:35:45 -0800 [thread overview]
Message-ID: <20060103233544.GA393161@dragonfly.engr.sgi.com> (raw)
It looks like the new scalable TLB flush code for x86_64 is claiming
one more IRQ vector than it actually uses.
Signed-off-by: Jason Uhlenkott <jasonuhl@sgi.com>
Index: linux/include/asm-x86_64/hw_irq.h
===================================================================
--- linux.orig/include/asm-x86_64/hw_irq.h 2006-01-02 19:21:10.000000000 -0800
+++ linux/include/asm-x86_64/hw_irq.h 2006-01-03 15:18:36.923399691 -0800
@@ -46,8 +46,6 @@
* some of the following vectors are 'rare', they are merged
* into a single vector (CALL_FUNCTION_VECTOR) to save vector space.
* TLB, reschedule and local APIC vectors are performance-critical.
- *
- * Vectors 0xf0-0xf9 are free (reserved for future Linux use).
*/
#define SPURIOUS_APIC_VECTOR 0xff
#define ERROR_APIC_VECTOR 0xfe
@@ -56,8 +54,8 @@
#define KDB_VECTOR 0xfb /* reserved for KDB */
#define THERMAL_APIC_VECTOR 0xfa
#define THRESHOLD_APIC_VECTOR 0xf9
-#define INVALIDATE_TLB_VECTOR_END 0xf8
-#define INVALIDATE_TLB_VECTOR_START 0xf0 /* f0-f8 used for TLB flush */
+#define INVALIDATE_TLB_VECTOR_END 0xf7
+#define INVALIDATE_TLB_VECTOR_START 0xf0 /* f0-f7 used for TLB flush */
#define NUM_INVALIDATE_TLB_VECTORS 8
next reply other threads:[~2006-01-03 23:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-03 23:35 Jason Uhlenkott [this message]
2006-01-03 23:49 ` Andi Kleen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20060103233544.GA393161@dragonfly.engr.sgi.com \
--to=jasonuhl@sgi.com \
--cc=ak@suse.de \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome