From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A53CD2144C4; Thu, 12 Dec 2024 16:43:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734021812; cv=none; b=lMhFNMpLoRUACDJ8fVrwelNuT1m2BmsiyP481q1YBPTPYwV1hY/bQZ1EAX2Z4HEcRtf+FAAlfDVpHMth2ZCPVpiZCu3GbzW8obYaZd7/sTL4GdkXx2O8CdZsDxV5H5et6nAJicbgwcJ5u8Ier+8jnElGHeAeke9O9m7SsnDK1V0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734021812; c=relaxed/simple; bh=2OBjLaEMY59LuJ7JFA51SgNSfy3rpGqCSmoBN3KwJE4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Hzt2gT4Uwe1VZ2Lax/UMmjMJahYZw00urDWfVIBrF6hWZYkF+2Xr5v94MJZWP0Si6BLHimO2O44o5HDdijnzYXIprjeiROVA/FZY1A8kRStGFvNZt58VZ/v/THepIHZGakBi/lBB5JMRHeDZsdEISn8/NjjjI4BvTHHAsXaYwcA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=knzc2kw6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="knzc2kw6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1F3E2C4CECE; Thu, 12 Dec 2024 16:43:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1734021812; bh=2OBjLaEMY59LuJ7JFA51SgNSfy3rpGqCSmoBN3KwJE4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=knzc2kw6YO78J9lIEnneQ3kun1qnqQOdlt+qCpG5ES6ZKSt+AHyALnJRqoPLpzlp6 KX5rpGyge3nNgb+rtQPqOCst/7Fy8SA/JXXIlkivnQB/NsJq+XbfSFU72QW1IXuKjV ieDo8uBM8Si5ZXL9czm3QKPscCdp959W1SycIG0o= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Harith George , Linus Walleij , "Russell King (Oracle)" , Sasha Levin Subject: [PATCH 5.15 070/565] ARM: 9420/1: smp: Fix SMP for xip kernels Date: Thu, 12 Dec 2024 15:54:25 +0100 Message-ID: <20241212144314.256553673@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241212144311.432886635@linuxfoundation.org> References: <20241212144311.432886635@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Harith G [ Upstream commit 9e9b0cf9319b4db143014477b0bc4b39894248f1 ] Fix the physical address calculation of the following to get smp working on xip kernels. - secondary_data needed for secondary cpu bootup. - secondary_startup address passed through psci. - identity mapped code region needed for enabling mmu for secondary cpus. Signed-off-by: Harith George Reviewed-by: Linus Walleij Signed-off-by: Russell King (Oracle) Signed-off-by: Sasha Levin --- arch/arm/kernel/head.S | 4 ++++ arch/arm/kernel/psci_smp.c | 7 +++++++ arch/arm/mm/idmap.c | 7 +++++++ 3 files changed, 18 insertions(+) diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 0638d20061d8c..6b6fa86593dec 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -411,7 +411,11 @@ ENTRY(secondary_startup) /* * Use the page tables supplied from __cpu_up. */ +#ifdef CONFIG_XIP_KERNEL + ldr r3, =(secondary_data + PLAT_PHYS_OFFSET - PAGE_OFFSET) +#else adr_l r3, secondary_data +#endif mov_l r12, __secondary_switched ldrd r4, r5, [r3, #0] @ get secondary_data.pgdir ARM_BE8(eor r4, r4, r5) @ Swap r5 and r4 in BE: diff --git a/arch/arm/kernel/psci_smp.c b/arch/arm/kernel/psci_smp.c index d4392e1774848..3bb0c4dcfc5c9 100644 --- a/arch/arm/kernel/psci_smp.c +++ b/arch/arm/kernel/psci_smp.c @@ -45,8 +45,15 @@ extern void secondary_startup(void); static int psci_boot_secondary(unsigned int cpu, struct task_struct *idle) { if (psci_ops.cpu_on) +#ifdef CONFIG_XIP_KERNEL + return psci_ops.cpu_on(cpu_logical_map(cpu), + ((phys_addr_t)(&secondary_startup) + - XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR) + + CONFIG_XIP_PHYS_ADDR)); +#else return psci_ops.cpu_on(cpu_logical_map(cpu), virt_to_idmap(&secondary_startup)); +#endif return -ENODEV; } diff --git a/arch/arm/mm/idmap.c b/arch/arm/mm/idmap.c index 448e57c6f6534..4a833e89782aa 100644 --- a/arch/arm/mm/idmap.c +++ b/arch/arm/mm/idmap.c @@ -84,8 +84,15 @@ static void identity_mapping_add(pgd_t *pgd, const char *text_start, unsigned long addr, end; unsigned long next; +#ifdef CONFIG_XIP_KERNEL + addr = (phys_addr_t)(text_start) - XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR) + + CONFIG_XIP_PHYS_ADDR; + end = (phys_addr_t)(text_end) - XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR) + + CONFIG_XIP_PHYS_ADDR; +#else addr = virt_to_idmap(text_start); end = virt_to_idmap(text_end); +#endif pr_info("Setting up static identity map for 0x%lx - 0x%lx\n", addr, end); prot |= PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AF; -- 2.43.0