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From: lauraa@codeaurora.org (Laura Abbott)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCHv3 3/7] arm64: Move cpu_resume into the text section
Date: Wed, 20 Aug 2014 18:20:35 -0700	[thread overview]
Message-ID: <1408584039-12735-4-git-send-email-lauraa@codeaurora.org> (raw)
In-Reply-To: <1408584039-12735-1-git-send-email-lauraa@codeaurora.org>

The function cpu_resume currently lives in the .data
section. This breaks functionality to make .data no
execute. Move cpu_resume to .text which is where it
actually belongs.

Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
---
 arch/arm64/kernel/sleep.S | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/arch/arm64/kernel/sleep.S b/arch/arm64/kernel/sleep.S
index b192572..6ee13db 100644
--- a/arch/arm64/kernel/sleep.S
+++ b/arch/arm64/kernel/sleep.S
@@ -126,12 +126,12 @@ cpu_resume_after_mmu:
 	ret
 ENDPROC(cpu_resume_after_mmu)
 
-	.data
 ENTRY(cpu_resume)
 	bl	el2_setup		// if in EL2 drop to EL1 cleanly
 #ifdef CONFIG_SMP
 	mrs	x1, mpidr_el1
-	adr	x4, mpidr_hash_ptr
+	adrp	x4, mpidr_hash_ptr
+	add	x4, x4, #:lo12:mpidr_hash_ptr
 	ldr	x5, [x4]
 	add	x8, x4, x5		// x8 = struct mpidr_hash phys address
         /* retrieve mpidr_hash members to compute the hash */
@@ -143,14 +143,15 @@ ENTRY(cpu_resume)
 #else
 	mov	x7, xzr
 #endif
-	adr	x0, sleep_save_sp
+	adrp	x0, sleep_save_sp
+	add	x0, x0, #:lo12:sleep_save_sp
 	ldr	x0, [x0, #SLEEP_SAVE_SP_PHYS]
 	ldr	x0, [x0, x7, lsl #3]
 	/* load sp from context */
 	ldr	x2, [x0, #CPU_CTX_SP]
-	adr	x1, sleep_idmap_phys
+	adrp	x1, sleep_idmap_phys
 	/* load physical address of identity map page table in x1 */
-	ldr	x1, [x1]
+	ldr	x1, [x1, #:lo12:sleep_idmap_phys]
 	mov	sp, x2
 	/*
 	 * cpu_do_resume expects x0 to contain context physical address
@@ -160,6 +161,7 @@ ENTRY(cpu_resume)
 	b	cpu_resume_mmu		// Resume MMU, never returns
 ENDPROC(cpu_resume)
 
+	.data
 	.align 3
 mpidr_hash_ptr:
 	/*
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation

  parent reply	other threads:[~2014-08-21  1:20 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-21  1:20 [PATCHv3 0/7] Better page protections for arm64 Laura Abbott
2014-08-21  1:20 ` [PATCHv3 1/7] arm64: Treat handle_arch_irq as a function pointer Laura Abbott
     [not found]   ` <CAGXu5jLur_gdXs2X5BCmxB6L5HwgyP12jkrufK7bpS0Cxhp_+Q@mail.gmail.com>
2014-08-25 18:23     ` Laura Abbott
2014-08-28 17:02   ` Catalin Marinas
2014-08-21  1:20 ` [PATCHv3 2/7] arm64: Switch to ldr for loading the stub vectors Laura Abbott
2014-08-21  9:30   ` Mark Rutland
2014-08-21  1:20 ` Laura Abbott [this message]
2014-08-25 20:34   ` [PATCHv3 3/7] arm64: Move cpu_resume into the text section Stephen Boyd
2014-08-26  0:43     ` Laura Abbott
2014-08-26  1:08       ` Stephen Boyd
2014-08-21  1:20 ` [PATCHv3 4/7] arm64: Move some head.text functions to executable section Laura Abbott
2014-08-21 10:34   ` Mark Rutland
2014-08-21 21:42     ` Laura Abbott
2014-08-22  9:48       ` Mark Rutland
2014-08-26  0:32         ` Laura Abbott
2014-08-26 17:45           ` Mark Rutland
2014-08-21  1:20 ` [PATCHv3 5/7] arm64: Factor out fixmap initialiation from ioremap Laura Abbott
2014-08-23  5:45   ` Kees Cook
2014-08-25 18:34     ` Laura Abbott
2014-08-21  1:20 ` [PATCHv3 6/7] arm64: use fixmap for text patching when text is RO Laura Abbott
2014-08-23  5:51   ` Kees Cook
2014-08-25 18:38     ` Laura Abbott
2014-08-26 18:36       ` Mark Rutland
2014-08-21  1:20 ` [PATCHv3 7/7] arm64: add better page protections to arm64 Laura Abbott
2014-08-23  5:59   ` Kees Cook
2014-08-25 19:04     ` Laura Abbott

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