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Received: from rere.qmqm.pl ([91.227.64.183]) by casper.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gLa0N-0005Yv-LG for linux-arm-kernel@lists.infradead.org; Sat, 10 Nov 2018 20:37:21 +0000 Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 42sph51lk2zBr; Sat, 10 Nov 2018 21:36:05 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1541882165; bh=fypOks9JPYQABLRKNL76aalzarZcTCGhqbWtWP8UPlo=; h=Date:From:Subject:To:Cc:From; b=Im5QL2fJY/wf3Cv46JDIYwl73KZQ+8IcqsBdM6o3XwwehhLyyKFdWX07UfpXYRs04 ayTTYRtgAzZdimMyQaiJaXzazXNFfBSzWBMDKmVxA88xAREa4x3pDTwAddwDW8juB7 CjWfwU0W3mZHjvZQUnm1dADefHr8Da3gC5qJyslA6MjI7oN2PAV9DTYB2XE0EQ5bNY 56Og0B5KnNndhD5Uto+529/wVzWAJNVojgq7NacMTcx1kfTNZ7npyvz36wVB9RmbZR 9MBzbbCmH3QvktW0no1VBOqamPYL3dsqWQvu6CXB7o0kYJ+R0COkt4bWS/Ke4cxR+e nS9eyRBk6GfVw== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.100.2 at mail Date: Sat, 10 Nov 2018 21:37:04 +0100 Message-Id: From: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= Subject: [PATCH] ARM: init: update secondary_data register documentation MIME-Version: 1.0 To: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181110_203719_744407_012BC69C X-CRM114-Status: GOOD ( 10.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Russell King Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Fix secondary_data pointer register and document other occurrences in SMP boot code. Fixes: 34d926266500 ("[ARM] Fix SMP booting") Signed-off-by: Michał Mirosław --- arch/arm/kernel/head.S | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 6b1148cafffd..43d0ce070d29 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -413,7 +413,7 @@ ENDPROC(secondary_startup) ENDPROC(secondary_startup_arm) /* - * r6 = &secondary_data + * r7 = &secondary_data */ ENTRY(__secondary_switched) ldr sp, [r7, #12] @ get secondary_data.stack @@ -443,6 +443,7 @@ __secondary_data: * r2 = atags or dtb pointer * r4 = TTBR pointer (low word) * r5 = TTBR pointer (high word if LPAE) + * r7 = secondary_data pointer (SMP) * r9 = processor ID * r13 = *virtual* address to jump to upon completion */ @@ -480,6 +481,7 @@ ENDPROC(__enable_mmu) * r0 = cp#15 control register * r1 = machine ID * r2 = atags or dtb pointer + * r7 = secondary_data pointer (SMP) * r9 = processor ID * r13 = *virtual* address to jump to upon completion *