From nobody Fri Dec 19 20:12:14 2025 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 7931D175D2C for ; Mon, 19 Aug 2024 14:55:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724079359; cv=none; b=DlzJrr4ZklSZyDoKtyHy+uJ7mX6/iVh4L5YLNN29wXq2qXoYxM1/zgucKsHQ8i287BoHyG0TBNBcO1CmwMu/zjSMYtSMoMdZofnrdMvjw85Zi0dAWnO2wOpmBXyDhu6Ltgsjb4YwKyHjkLIsSnVrY5hlQ/9BGFyJkH5DwNu/9lA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724079359; c=relaxed/simple; bh=gvXUPSVXR+TJbArq4gRza0CovZloy+FUB0ztPEaCf80=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DlHBgnJXq3XTZbP78jsi5nYlRn6js8AyPLh5DByzBbdiqkAz53qNNaxm3U4wt88WQJq+Td9nxs6bZWtOdg+DQtQ3thzLflUKRQI5+RKsoBkwx8iLcZIfr07jW394sAIdpAyLAR/Tk45CGGRWkmdJLYM786b+QVMDv3vg42pFbiA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=Vuv7LmrY; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Vuv7LmrY" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1724079356; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=nORFBheCnmBdqnoFe9uPUvA5oaRV47y8v5ImE/FbbjU=; b=Vuv7LmrYfCJc1etmcGrguXXG9+85FFGhKUnGYLUv29Vb87B4ieVJ9x6KBni/4WBKTnzoGt AgOj6FOh6B3B6kme5m3BPO1sIG+UpVe27UKYGCfPJCvjqEQhJsMhH/iJijMlt/dquiEJ8h ijKue8I3w2UcKG8+fx3TnubIGRgc+/E= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-632-KAsVic3cOMOfMu4DfSmE5w-1; Mon, 19 Aug 2024 10:55:51 -0400 X-MC-Unique: KAsVic3cOMOfMu4DfSmE5w-1 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 5D79A1955D52; Mon, 19 Aug 2024 14:55:49 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.72.116.15]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 6199619560A3; Mon, 19 Aug 2024 14:55:38 +0000 (UTC) From: Pingfan Liu To: linux-arm-kernel@lists.infradead.org Cc: Pingfan Liu , Ard Biesheuvel , Jan Hendrik Farr , Philipp Rudo , Lennart Poettering , Jarkko Sakkinen , Eric Biederman , Baoquan He , Dave Young , Mark Rutland , Will Deacon , Catalin Marinas , kexec@lists.infradead.org, linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFCv2 6/9] arm64: kexec: Introduce a new member param_mem to kimage_arch Date: Mon, 19 Aug 2024 22:53:39 +0800 Message-ID: <20240819145417.23367-7-piliu@redhat.com> In-Reply-To: <20240819145417.23367-1-piliu@redhat.com> References: <20240819145417.23367-1-piliu@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Content-Type: text/plain; charset="utf-8" relocate_kernel will be used either to boot vmlinux directly or PE image. In the latter case, the efi emulator needs efi_emulator_param instead of dtb as input parameter. On the other hand, dtb is still required to pass down through efi_emulator_param to the second kernel, so keep kimage_arch->dtb_mem as scratch and introduce another member 'param_mem' When booting vmlinux, param_mem equals dtb_mem. Signed-off-by: Pingfan Liu Cc: Catalin Marinas Cc: Will Deacon Cc: Mark Rutland Cc: Ard Biesheuvel To: linux-arm-kernel@lists.infradead.org --- arch/arm64/include/asm/kexec.h | 1 + arch/arm64/kernel/asm-offsets.c | 2 +- arch/arm64/kernel/machine_kexec.c | 2 +- arch/arm64/kernel/machine_kexec_file.c | 1 + arch/arm64/kernel/relocate_kernel.S | 2 +- 5 files changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/arm64/include/asm/kexec.h b/arch/arm64/include/asm/kexec.h index 4d9cc7a76d9ca..f4c63a1a9531f 100644 --- a/arch/arm64/include/asm/kexec.h +++ b/arch/arm64/include/asm/kexec.h @@ -109,6 +109,7 @@ int machine_kexec_post_load(struct kimage *image); struct kimage_arch { void *dtb; phys_addr_t dtb_mem; + phys_addr_t param_mem; phys_addr_t kern_reloc; phys_addr_t el2_vectors; phys_addr_t ttbr0; diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offset= s.c index 81496083c0413..8633a94fcb9f1 100644 --- a/arch/arm64/kernel/asm-offsets.c +++ b/arch/arm64/kernel/asm-offsets.c @@ -187,7 +187,7 @@ int main(void) BLANK(); #endif #ifdef CONFIG_KEXEC_CORE - DEFINE(KIMAGE_ARCH_DTB_MEM, offsetof(struct kimage, arch.dtb_mem)); + DEFINE(KIMAGE_ARCH_PARAM_MEM, offsetof(struct kimage, arch.param_mem)); DEFINE(KIMAGE_ARCH_EL2_VECTORS, offsetof(struct kimage, arch.el2_vectors= )); DEFINE(KIMAGE_ARCH_ZERO_PAGE, offsetof(struct kimage, arch.zero_page)); DEFINE(KIMAGE_ARCH_PHYS_OFFSET, offsetof(struct kimage, arch.phys_offset= )); diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_= kexec.c index 82e2203d86a31..6958c1fc84a5a 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -192,7 +192,7 @@ void machine_kexec(struct kimage *kimage) =20 cpu_install_idmap(); restart =3D (void *)__pa_symbol(cpu_soft_restart); - restart(is_hyp_nvhe(), kimage->start, kimage->arch.dtb_mem, + restart(is_hyp_nvhe(), kimage->start, kimage->arch.param_mem, 0, 0); } else { void (*kernel_reloc)(struct kimage *kimage); diff --git a/arch/arm64/kernel/machine_kexec_file.c b/arch/arm64/kernel/mac= hine_kexec_file.c index af1ca875c52ce..9fca3a35f04d5 100644 --- a/arch/arm64/kernel/machine_kexec_file.c +++ b/arch/arm64/kernel/machine_kexec_file.c @@ -184,6 +184,7 @@ int load_other_segments(struct kimage *image, goto out_err; image->arch.dtb =3D dtb; image->arch.dtb_mem =3D kbuf.mem; + image->arch.param_mem =3D image->arch.dtb_mem; =20 kexec_dprintk("Loaded dtb at 0x%lx bufsz=3D0x%lx memsz=3D0x%lx\n", kbuf.mem, kbuf.bufsz, kbuf.memsz); diff --git a/arch/arm64/kernel/relocate_kernel.S b/arch/arm64/kernel/reloca= te_kernel.S index 413f899e4ac63..84e1bbb7def21 100644 --- a/arch/arm64/kernel/relocate_kernel.S +++ b/arch/arm64/kernel/relocate_kernel.S @@ -44,7 +44,7 @@ SYM_CODE_START(arm64_relocate_new_kernel) */ ldr x28, [x0, #KIMAGE_START] ldr x27, [x0, #KIMAGE_ARCH_EL2_VECTORS] - ldr x26, [x0, #KIMAGE_ARCH_DTB_MEM] + ldr x26, [x0, #KIMAGE_ARCH_PARAM_MEM] =20 /* Setup the list loop variables. */ ldr x18, [x0, #KIMAGE_ARCH_ZERO_PAGE] /* x18 =3D zero page for BBM */ --=20 2.41.0