From: "H. Peter Anvin" <hpa@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: vgoyal@redhat.com, hbabu@us.ibm.com, kexec@lists.infradead.org,
ying.huang@intel.com, mingo@elte.hu, tglx@linutronix.de,
ebiederm@xmission.com, sam@ravnborg.org,
"H. Peter Anvin" <hpa@zytor.com>
Subject: [PATCH 01/14] x86, boot: align the .bss section in the decompressor
Date: Thu, 7 May 2009 15:26:49 -0700 [thread overview]
Message-ID: <1241735222-6640-2-git-send-email-hpa@linux.intel.com> (raw)
In-Reply-To: <1241735222-6640-1-git-send-email-hpa@linux.intel.com>
From: H. Peter Anvin <hpa@zytor.com>
Aligning the .bss section makes it trivially faster, and makes using
larger transfers for the clear slightly easier.
[ Impact: trivial performance enhancement, future patch prep ]
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
---
arch/x86/boot/compressed/vmlinux.lds.S | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compressed/vmlinux.lds.S
index 0d26c92..27c168d 100644
--- a/arch/x86/boot/compressed/vmlinux.lds.S
+++ b/arch/x86/boot/compressed/vmlinux.lds.S
@@ -42,6 +42,7 @@ SECTIONS
*(.data.*)
_edata = . ;
}
+ . = ALIGN(32);
.bss : {
_bss = . ;
*(.bss)
--
1.6.0.6
WARNING: multiple messages have this Message-ID (diff)
From: "H. Peter Anvin" <hpa@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>,
kexec@lists.infradead.org, hbabu@us.ibm.com,
ebiederm@xmission.com, ying.huang@intel.com, mingo@elte.hu,
sam@ravnborg.org, tglx@linutronix.de, vgoyal@redhat.com
Subject: [PATCH 01/14] x86, boot: align the .bss section in the decompressor
Date: Thu, 7 May 2009 15:26:49 -0700 [thread overview]
Message-ID: <1241735222-6640-2-git-send-email-hpa@linux.intel.com> (raw)
In-Reply-To: <1241735222-6640-1-git-send-email-hpa@linux.intel.com>
From: H. Peter Anvin <hpa@zytor.com>
Aligning the .bss section makes it trivially faster, and makes using
larger transfers for the clear slightly easier.
[ Impact: trivial performance enhancement, future patch prep ]
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
---
arch/x86/boot/compressed/vmlinux.lds.S | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compressed/vmlinux.lds.S
index 0d26c92..27c168d 100644
--- a/arch/x86/boot/compressed/vmlinux.lds.S
+++ b/arch/x86/boot/compressed/vmlinux.lds.S
@@ -42,6 +42,7 @@ SECTIONS
*(.data.*)
_edata = . ;
}
+ . = ALIGN(32);
.bss : {
_bss = . ;
*(.bss)
--
1.6.0.6
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next prev parent reply other threads:[~2009-05-07 22:27 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-07 22:26 [PATCH 00/14] RFC: x86: relocatable kernel changes H. Peter Anvin
2009-05-07 22:26 ` H. Peter Anvin
2009-05-07 22:26 ` H. Peter Anvin [this message]
2009-05-07 22:26 ` [PATCH 01/14] x86, boot: align the .bss section in the decompressor H. Peter Anvin
2009-05-08 7:17 ` Sam Ravnborg
2009-05-08 7:17 ` Sam Ravnborg
2009-05-08 8:18 ` Eric Dumazet
2009-05-08 8:18 ` Eric Dumazet
2009-05-08 16:54 ` H. Peter Anvin
2009-05-08 16:54 ` H. Peter Anvin
2009-05-08 7:53 ` Cyrill Gorcunov
2009-05-08 7:53 ` Cyrill Gorcunov
2009-05-08 17:03 ` H. Peter Anvin
2009-05-08 17:03 ` H. Peter Anvin
2009-05-08 17:15 ` Cyrill Gorcunov
2009-05-08 17:15 ` Cyrill Gorcunov
2009-05-08 17:21 ` H. Peter Anvin
2009-05-08 17:21 ` H. Peter Anvin
2009-05-07 22:26 ` [PATCH 02/14] x86, boot: honor CONFIG_PHYSICAL_START when relocatable H. Peter Anvin
2009-05-07 22:26 ` H. Peter Anvin
2009-05-08 7:34 ` Sam Ravnborg
2009-05-08 7:34 ` Sam Ravnborg
2009-05-08 16:58 ` H. Peter Anvin
2009-05-08 16:58 ` H. Peter Anvin
2009-05-07 22:26 ` [PATCH 03/14] x86, config: change defaults PHYSICAL_START and PHYSICAL_ALIGN H. Peter Anvin
2009-05-07 22:26 ` H. Peter Anvin
2009-05-08 7:36 ` Sam Ravnborg
2009-05-08 7:36 ` Sam Ravnborg
2009-05-08 9:47 ` Ingo Molnar
2009-05-08 9:47 ` Ingo Molnar
2009-05-08 17:01 ` H. Peter Anvin
2009-05-08 17:01 ` H. Peter Anvin
2009-05-07 22:26 ` [PATCH 04/14] x86, boot: unify use LOAD_PHYSICAL_ADDR and LOAD_PHYSICAL_ALIGN H. Peter Anvin
2009-05-07 22:26 ` H. Peter Anvin
2009-05-07 22:26 ` [PATCH 05/14] kbuild: allow compressors (gzip, bzip2, lzma) to take multiple inputs H. Peter Anvin
2009-05-07 22:26 ` H. Peter Anvin
2009-05-08 7:42 ` Sam Ravnborg
2009-05-08 7:42 ` Sam Ravnborg
2009-05-08 20:18 ` H. Peter Anvin
2009-05-08 20:18 ` H. Peter Anvin
2009-05-08 20:47 ` Sam Ravnborg
2009-05-08 20:47 ` Sam Ravnborg
2009-05-08 20:49 ` H. Peter Anvin
2009-05-08 20:49 ` H. Peter Anvin
2009-05-08 21:33 ` Sam Ravnborg
2009-05-08 21:33 ` Sam Ravnborg
2009-05-07 22:26 ` [PATCH 06/14] x86: add a Kconfig symbol for when relocations are needed H. Peter Anvin
2009-05-07 22:26 ` H. Peter Anvin
2009-05-07 22:26 ` [PATCH 07/14] x86, boot: simplify arch/x86/boot/compressed/Makefile H. Peter Anvin
2009-05-07 22:26 ` H. Peter Anvin
2009-05-08 7:45 ` Sam Ravnborg
2009-05-08 7:45 ` Sam Ravnborg
2009-05-07 22:26 ` [PATCH 08/14] x86, boot: use BP_scratch in arch/x86/boot/compressed/head_*.S H. Peter Anvin
2009-05-07 22:26 ` H. Peter Anvin
2009-05-07 22:26 ` [PATCH 09/14] x86, boot: add new runtime_address and runtime_size bzImage fields H. Peter Anvin
2009-05-07 22:26 ` H. Peter Anvin
2009-05-08 7:55 ` Sam Ravnborg
2009-05-08 7:55 ` Sam Ravnborg
2009-05-08 21:09 ` H. Peter Anvin
2009-05-08 21:09 ` H. Peter Anvin
2009-05-08 21:35 ` Sam Ravnborg
2009-05-08 21:35 ` Sam Ravnborg
2009-05-07 22:26 ` [PATCH 10/14] x86, doc: document the runtime_start " H. Peter Anvin
2009-05-07 22:26 ` H. Peter Anvin
2009-05-07 22:26 ` [PATCH 11/14] x86, boot: use rep movsq to move kernel on 64 bits H. Peter Anvin
2009-05-07 22:26 ` H. Peter Anvin
2009-05-07 22:27 ` [PATCH 12/14] x86, boot: zero EFLAGS on 32 bits H. Peter Anvin
2009-05-07 22:27 ` H. Peter Anvin
2009-05-07 22:27 ` [PATCH 13/14] x86: make CONFIG_RELOCATABLE the default H. Peter Anvin
2009-05-07 22:27 ` H. Peter Anvin
2009-05-07 22:27 ` [PATCH 14/14] x86, defconfig: update defconfigs to relocatable H. Peter Anvin
2009-05-07 22:27 ` H. Peter Anvin
2009-05-08 1:23 ` [PATCH 00/14] RFC: x86: relocatable kernel changes Eric W. Biederman
2009-05-08 1:23 ` Eric W. Biederman
2009-05-08 5:31 ` H. Peter Anvin
2009-05-08 5:31 ` H. Peter Anvin
2009-05-08 6:54 ` Eric W. Biederman
2009-05-08 6:54 ` Eric W. Biederman
2009-05-08 18:04 ` H. Peter Anvin
2009-05-08 18:04 ` H. Peter Anvin
2009-05-08 18:47 ` H. Peter Anvin
2009-05-08 18:47 ` H. Peter Anvin
2009-05-11 5:18 ` RFC: x86: relocatable kernel changes (revised spec) H. Peter Anvin
2009-05-11 5:18 ` H. Peter Anvin
2009-05-11 11:54 ` Eric W. Biederman
2009-05-11 11:54 ` Eric W. Biederman
2009-05-11 16:03 ` H. Peter Anvin
2009-05-11 16:03 ` H. Peter Anvin
2009-05-11 17:56 ` RFC: x86: relocatable kernel changes (revised spec v2) H. Peter Anvin
2009-05-11 17:56 ` H. Peter Anvin
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