From: Andi Kleen <andi@firstfloor.org>
To: x86@kernel.org
Cc: linux-kernel@vger.kernel.org, Andi Kleen <ak@linux.intel.com>,
tj@kernel.org
Subject: [PATCH 1/7] percpu: Add a DEFINE_PER_CPU_2PAGE_ALIGNED
Date: Mon, 28 Apr 2014 15:12:35 -0700 [thread overview]
Message-ID: <1398723161-21968-2-git-send-email-andi@firstfloor.org> (raw)
In-Reply-To: <1398723161-21968-1-git-send-email-andi@firstfloor.org>
From: Andi Kleen <ak@linux.intel.com>
Needed in a followon patch which needs to naturally align a 8K stack.
I just put it into the page aligned section. This may cause an extra
4K hole if we're unlucky.
Cc: tj@kernel.org
Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
include/linux/percpu-defs.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/percpu-defs.h b/include/linux/percpu-defs.h
index a5fc7d0..5b2f5b0 100644
--- a/include/linux/percpu-defs.h
+++ b/include/linux/percpu-defs.h
@@ -142,6 +142,10 @@
DEFINE_PER_CPU_SECTION(type, name, "..page_aligned") \
__aligned(PAGE_SIZE)
+#define DEFINE_PER_CPU_2PAGE_ALIGNED(type, name) \
+ DEFINE_PER_CPU_SECTION(type, name, "..page_aligned") \
+ __aligned(2*PAGE_SIZE)
+
/*
* Declaration/definition used for per-CPU variables that must be read mostly.
*/
--
1.9.0
next prev parent reply other threads:[~2014-04-28 22:14 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-28 22:12 Add support for RD/WR FS/GSBASE Andi Kleen
2014-04-28 22:12 ` Andi Kleen [this message]
2014-05-02 15:18 ` [PATCH 1/7] percpu: Add a DEFINE_PER_CPU_2PAGE_ALIGNED Tejun Heo
2014-04-28 22:12 ` [PATCH 2/7] x86: Naturally align the debug IST stack Andi Kleen
2014-04-28 22:12 ` [PATCH 3/7] x86: Add C intrinsics for new rd/wr fs/gs base instructions Andi Kleen
2014-04-29 14:10 ` Konrad Rzeszutek Wilk
2014-04-28 22:12 ` [PATCH 4/7] x86: Add support for rd/wr fs/gs base Andi Kleen
2014-04-29 18:19 ` Andy Lutomirski
2014-04-29 23:39 ` Andi Kleen
2014-04-30 4:52 ` H. Peter Anvin
2014-04-30 4:57 ` H. Peter Anvin
2014-04-30 23:44 ` Andy Lutomirski
2014-04-30 23:47 ` Andy Lutomirski
2014-05-01 21:15 ` Andi Kleen
2014-05-01 21:39 ` Andy Lutomirski
2014-05-01 21:51 ` Andi Kleen
2014-05-01 21:53 ` Andy Lutomirski
2014-05-01 21:58 ` H. Peter Anvin
2014-05-01 22:06 ` Andy Lutomirski
2014-05-01 22:18 ` Andi Kleen
2014-05-01 22:45 ` H. Peter Anvin
2014-04-28 22:12 ` [PATCH 5/7] x86: Make old K8 swapgs workaround conditional Andi Kleen
2014-04-30 4:57 ` H. Peter Anvin
2014-04-28 22:12 ` [PATCH 6/7] x86: Enumerate kernel FSGS capability in AT_HWCAP2 Andi Kleen
2014-04-28 22:12 ` [PATCH 7/7] x86: Add documentation for rd/wr fs/gs base Andi Kleen
2014-04-29 2:23 ` Randy Dunlap
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