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From: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
To: linux-kernel@vger.kernel.org
Cc: linux-kbuild@vger.kernel.org, Michal Marek <mmarek@suse.cz>,
	Sam Ravnborg <sam@ravnborg.org>,
	Joseph Cihula <joseph.cihula@intel.com>,
	Shane Wang <shane.wang@intel.com>,
	hpa@linux.intel.com
Subject: [PATCH 10/23] x86, realmode: Move bits to the proper sections in trampoline_64.S
Date: Tue,  8 May 2012 21:22:33 +0300	[thread overview]
Message-ID: <1336501366-28617-11-git-send-email-jarkko.sakkinen@intel.com> (raw)
In-Reply-To: <1336501366-28617-1-git-send-email-jarkko.sakkinen@intel.com>

From: "H. Peter Anvin" <hpa@linux.intel.com>

Move various bits to the sections they really belong in in
trampoline_64.S.  Use GLOBAL() rather than ENTRY() for data objects:
ENTRY() should only be used with code and forces alignment to 16
bytes.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
 arch/x86/realmode/rm/trampoline_64.S |   10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/x86/realmode/rm/trampoline_64.S b/arch/x86/realmode/rm/trampoline_64.S
index 063da00..66c58cf 100644
--- a/arch/x86/realmode/rm/trampoline_64.S
+++ b/arch/x86/realmode/rm/trampoline_64.S
@@ -80,6 +80,7 @@ no_longmode:
 	jmp no_longmode
 #include "../kernel/verify_cpu.S"
 
+	.section ".text32","ax"
 	.code32
 	.balign 4
 ENTRY(startup_32)
@@ -114,6 +115,7 @@ ENTRY(startup_32)
 	 */
 	ljmpl	*(pa_startup_64_vector)
 
+	.section ".text64","ax"
 	.code64
 	.balign 4
 ENTRY(startup_64)
@@ -123,7 +125,8 @@ ENTRY(startup_64)
 	addl	%esi, %eax
 	jmp	*%rax
 
-	# Careful these need to be in the same 64K segment as the above;
+	.section ".rodata","a"
+	.balign	16
 tidt:
 	.word	0			# idt limit = 0
 	.word	0, 0			# idt base = 0L
@@ -153,9 +156,8 @@ startup_64_vector:
 	.word	__KERNEL_CS, 0
 
 	.data
-
 	.balign 4
-ENTRY(trampoline_status)
+GLOBAL(trampoline_status)
 	.long	0
 
 trampoline_stack:
@@ -164,7 +166,7 @@ trampoline_stack_end:
 
 	.globl	level3_ident_pgt
 	.globl	level3_kernel_pgt
-ENTRY(trampoline_level4_pgt)
+GLOBAL(trampoline_level4_pgt)
 	level3_ident_pgt:	.quad	0
 	.fill 510,8,0
 	level3_kernel_pgt:	.quad	0
-- 
1.7.9.5


  parent reply	other threads:[~2012-05-08 18:27 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-08 18:22 [PATCH 00/23] x86, realmode: new infrastructure for realmode code Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 01/23] x86, realmode: 16-bit real-mode code support for relocs tool Jarkko Sakkinen
2012-05-08 22:13   ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 02/23] x86, realmode: realmode.bin infrastructure Jarkko Sakkinen
2012-05-08 18:53   ` Sam Ravnborg
2012-05-08 19:14     ` H. Peter Anvin
2012-05-08 20:15       ` H. Peter Anvin
2012-05-08 21:11         ` Sam Ravnborg
2012-05-08 21:21           ` H. Peter Anvin
2012-05-08 22:14   ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-09 15:49   ` [PATCH 02/23] " H. Peter Anvin
     [not found]     ` <alpine.DEB.2.02.1205092256240.31031@jsakkine-mobl1.(null)>
2012-05-09 20:06       ` H. Peter Anvin
2012-05-08 18:22 ` [PATCH 03/23] x86, realmode: Relocator for realmode code Jarkko Sakkinen
2012-05-08 22:15   ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 04/23] x86, realmode: Move reboot_32.S to unified " Jarkko Sakkinen
2012-05-08 22:16   ` [tip:x86/trampoline] x86, realmode: Move reboot_32. S " tip-bot for Jarkko Sakkinen
2012-05-09  7:12   ` [PATCH 04/23] x86, realmode: Move reboot_32.S " Paolo Bonzini
     [not found]     ` <alpine.DEB.2.02.1205091525100.6943@jsakkine-mobl2.(null)>
2012-05-09 13:53       ` H. Peter Anvin
2012-05-09 14:15         ` Paolo Bonzini
2012-05-09 14:18           ` H. Peter Anvin
2012-05-08 18:22 ` [PATCH 05/23] x86, realmode: Move SMP trampoline " Jarkko Sakkinen
2012-05-08 22:17   ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 06/23] x86, realmode: Move ACPI wakeup " Jarkko Sakkinen
2012-05-08 22:18   ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 07/23] x86, realmode: Set permission for real mode pages Jarkko Sakkinen
2012-05-08 22:19   ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 08/23] x86, realmode: Allow absolute pa_* symbols in the realmode code Jarkko Sakkinen
2012-05-08 22:19   ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 09/23] x86, realmode: Add .text64 section, make barrier symbols absolute Jarkko Sakkinen
2012-05-08 22:20   ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` Jarkko Sakkinen [this message]
2012-05-08 22:21   ` [tip:x86/trampoline] x86, realmode: Move bits to the proper sections in trampoline_64.S tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 11/23] x86, realmode: Align .data section in trampoline_32.S Jarkko Sakkinen
2012-05-08 22:22   ` [tip:x86/trampoline] x86, realmode: Align . data " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 12/23] x86, realmode: Remove indirect jumps in trampoline_64.S Jarkko Sakkinen
2012-05-08 22:23   ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 13/23] x86, realmode: Remove indirect jumps in trampoline_32 and wakeup_asm Jarkko Sakkinen
2012-05-08 22:24   ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 14/23] x86, realmode: Replace open-coded ljmpw with a macro Jarkko Sakkinen
2012-05-08 22:24   ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 15/23] x86, realmode: Move trampoline_*.S early in the link order Jarkko Sakkinen
2012-05-08 22:25   ` [tip:x86/trampoline] x86, realmode: Move trampoline_*. S " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 16/23] x86, realmode: Fix always-zero test in reboot_32.S Jarkko Sakkinen
2012-05-08 22:26   ` [tip:x86/trampoline] " tip-bot for H. Peter Anvin
2012-05-08 18:22 ` [PATCH 17/23] x86, realmode: fix 64-bit wakeup sequence Jarkko Sakkinen
2012-05-08 22:27   ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 18/23] x86, realmode: don't copy real_mode_header Jarkko Sakkinen
2012-05-08 22:28   ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 19/23] x86, realmode: flattened rm hierachy Jarkko Sakkinen
2012-05-08 22:29   ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 20/23] x86, realmode: header for trampoline code Jarkko Sakkinen
2012-05-08 22:29   ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 21/23] x86, realmode: move relocs from scripts/ to arch/x86/tools Jarkko Sakkinen
2012-05-08 22:30   ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 22/23] x86, realmode: fixes compilation issue in tboot.c Jarkko Sakkinen
2012-05-08 22:31   ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-08 18:22 ` [PATCH 23/23] x86, realmode: read cr4 and EFER from kernel for 64-bit trampoline Jarkko Sakkinen
2012-05-08 22:32   ` [tip:x86/trampoline] " tip-bot for Jarkko Sakkinen
2012-05-16 20:37   ` [tip:x86/trampoline] x86, realmode: Mask out EFER. LMA when saving trampoline EFER tip-bot for H. Peter Anvin

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