From patchwork Thu Oct 17 17:03:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Daniel P. Smith" X-Patchwork-Id: 13840499 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DECCED3C526 for ; Thu, 17 Oct 2024 17:19:33 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.820992.1234782 (Exim 4.92) (envelope-from ) id 1t1U9i-0000jv-85; Thu, 17 Oct 2024 17:19:22 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 820992.1234782; Thu, 17 Oct 2024 17:19:22 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1t1U9i-0000jm-4M; Thu, 17 Oct 2024 17:19:22 +0000 Received: by outflank-mailman (input) for mailman id 820992; Thu, 17 Oct 2024 17:19:20 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1t1TxG-0008TH-Pu for xen-devel@lists.xenproject.org; Thu, 17 Oct 2024 17:06:30 +0000 Received: from sender4-of-o51.zoho.com (sender4-of-o51.zoho.com [136.143.188.51]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 2621499d-8caa-11ef-a0be-8be0dac302b0; Thu, 17 Oct 2024 19:06:29 +0200 (CEST) Received: by mx.zohomail.com with SMTPS id 1729184640324617.7081638090145; Thu, 17 Oct 2024 10:04:00 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 2621499d-8caa-11ef-a0be-8be0dac302b0 ARC-Seal: i=1; a=rsa-sha256; t=1729184643; cv=none; d=zohomail.com; s=zohoarc; b=GudBkxNB4uk1sueWWl+b+OP6jTJXLFAeyzYM8YUWdxnyr+bK/gVchS0QTLyxsKoFxE7DdP5s3e08ZWH7fb6uUN7S12N8Hh8PgvTUXlEqmKLBmJ+K/BUMQD46W5ct7jdJCl/aIzotiZELXhjFVH+YWESa4B/KhlhzXLkyZ1mDrxI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1729184643; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=GjWn8P4/iAki6mlp0w0Xm+yUTIZ9w1BAGBcnDQ6vMwM=; b=LpYrwgK9bfZueJBU+SAUDU1e3bU5wodF29i6gi1+jPXnXoZE9ow843hw6Yc9ovQYURESv9FJZig+f94DZ/daVKxVlntlBzTGIYtN6yc4tJRiCTy8GwX+7faLJNoy3xy1ITWMGysEwE6I7qjep+nArvqkLA1wz5yE203zmPzJVLw= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=apertussolutions.com; spf=pass smtp.mailfrom=dpsmith@apertussolutions.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1729184643; s=zoho; d=apertussolutions.com; i=dpsmith@apertussolutions.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-Id:Message-Id:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Reply-To; bh=GjWn8P4/iAki6mlp0w0Xm+yUTIZ9w1BAGBcnDQ6vMwM=; b=TkoQ29bQlwlOP19lG7oy5Zjm46vD9LKMur7RO34njb2dqGPpF02cR1T43nSTDWSP c3Q+bGHEPk7vTw70gM5qvW6JCt4KYx6X8Pbl2ZpM54BfMqc2M0uOGjbv3JUZF67V2ez 9mPBEwPVrlWQPZz8o/kGuKb3nFAhrBKtVsp1Fulg= From: "Daniel P. Smith" To: xen-devel@lists.xenproject.org Cc: "Daniel P. Smith" , jason.andryuk@amd.com, christopher.w.clark@gmail.com, stefano.stabellini@amd.com, Jan Beulich , Andrew Cooper , =?utf-8?q?Roger_Pau_Monn=C3=A9?= Subject: [PATCH v6 20/44] x86/boot: convert xsm policy loading to struct boot_module Date: Thu, 17 Oct 2024 13:03:00 -0400 Message-Id: <20241017170325.3842-21-dpsmith@apertussolutions.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20241017170325.3842-1-dpsmith@apertussolutions.com> References: <20241017170325.3842-1-dpsmith@apertussolutions.com> MIME-Version: 1.0 X-ZohoMailClient: External Iterate through the unclaimed struct boot_module to see if any are an XSM FLASK policy. If one is located, mark it as an xsm policy. Signed-off-by: Daniel P. Smith Reviewed-by: Jason Andryuk --- Changes since v5: - replaced bootstrap_map with bootstrap_map_bm - make init function definitions consistent in dropping const on *bi --- xen/arch/x86/include/asm/bootinfo.h | 1 + xen/arch/x86/setup.c | 2 +- xen/include/xsm/xsm.h | 11 +++++++---- xen/xsm/xsm_core.c | 17 +++++++++++++---- xen/xsm/xsm_policy.c | 15 ++++++++------- 5 files changed, 30 insertions(+), 16 deletions(-) diff --git a/xen/arch/x86/include/asm/bootinfo.h b/xen/arch/x86/include/asm/bootinfo.h index 19a0ed16ab27..8b63eb27d6dd 100644 --- a/xen/arch/x86/include/asm/bootinfo.h +++ b/xen/arch/x86/include/asm/bootinfo.h @@ -21,6 +21,7 @@ enum bootmod_type { BOOTMOD_KERNEL, BOOTMOD_RAMDISK, BOOTMOD_MICROCODE, + BOOTMOD_XSM_POLICY, }; struct boot_module { diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c index 04de06ba1400..a4ddcb908626 100644 --- a/xen/arch/x86/setup.c +++ b/xen/arch/x86/setup.c @@ -1863,7 +1863,7 @@ void asmlinkage __init noreturn __start_xen(unsigned long mbi_p) mmio_ro_ranges = rangeset_new(NULL, "r/o mmio ranges", RANGESETF_prettyprint_hex); - xsm_multiboot_init(module_map, mbi); + xsm_multiboot_init(module_map, bi); /* * IOMMU-related ACPI table parsing may require some of the system domains diff --git a/xen/include/xsm/xsm.h b/xen/include/xsm/xsm.h index 627c0d2731af..f155d10e718c 100644 --- a/xen/include/xsm/xsm.h +++ b/xen/include/xsm/xsm.h @@ -17,7 +17,10 @@ #include #include -#include + +#ifdef CONFIG_MULTIBOOT +#include +#endif /* policy magic number (defined by XSM_MAGIC) */ typedef uint32_t xsm_magic_t; @@ -779,9 +782,9 @@ static inline int xsm_argo_send(const struct domain *d, const struct domain *t) #ifdef CONFIG_MULTIBOOT int xsm_multiboot_init( - unsigned long *module_map, const multiboot_info_t *mbi); + unsigned long *module_map, struct boot_info *bi); int xsm_multiboot_policy_init( - unsigned long *module_map, const multiboot_info_t *mbi, + unsigned long *module_map, struct boot_info *bi, void **policy_buffer, size_t *policy_size); #endif @@ -829,7 +832,7 @@ static const inline struct xsm_ops *silo_init(void) #ifdef CONFIG_MULTIBOOT static inline int xsm_multiboot_init ( - unsigned long *module_map, const multiboot_info_t *mbi) + unsigned long *module_map, struct boot_info *bi) { return 0; } diff --git a/xen/xsm/xsm_core.c b/xen/xsm/xsm_core.c index eaa028109bde..6f034f70428d 100644 --- a/xen/xsm/xsm_core.c +++ b/xen/xsm/xsm_core.c @@ -21,6 +21,7 @@ #ifdef CONFIG_XSM #ifdef CONFIG_MULTIBOOT +#include #include #endif @@ -140,7 +141,7 @@ static int __init xsm_core_init(const void *policy_buffer, size_t policy_size) #ifdef CONFIG_MULTIBOOT int __init xsm_multiboot_init( - unsigned long *module_map, const multiboot_info_t *mbi) + unsigned long *module_map, struct boot_info *bi) { int ret = 0; void *policy_buffer = NULL; @@ -150,18 +151,26 @@ int __init xsm_multiboot_init( if ( XSM_MAGIC ) { - ret = xsm_multiboot_policy_init(module_map, mbi, &policy_buffer, + ret = xsm_multiboot_policy_init(module_map, bi, &policy_buffer, &policy_size); if ( ret ) { - bootstrap_map(NULL); + bootstrap_map_bm(NULL); printk(XENLOG_ERR "Error %d initializing XSM policy\n", ret); return -EINVAL; } } ret = xsm_core_init(policy_buffer, policy_size); - bootstrap_map(NULL); + if ( ret == 0 ) + { + int idx = first_boot_module_index(bi, BOOTMOD_XSM_POLICY); + + /* If the policy was loaded from a boot module, mark it consumed */ + if ( idx >= 0 ) + bi->mods[idx].flags |= BOOTMOD_FLAG_X86_CONSUMED; + } + bootstrap_map_bm(NULL); return 0; } diff --git a/xen/xsm/xsm_policy.c b/xen/xsm/xsm_policy.c index 8dafbc93810f..921bb254b9d1 100644 --- a/xen/xsm/xsm_policy.c +++ b/xen/xsm/xsm_policy.c @@ -21,6 +21,7 @@ #include #ifdef CONFIG_MULTIBOOT #include +#include #include #endif #include @@ -31,11 +32,10 @@ #ifdef CONFIG_MULTIBOOT int __init xsm_multiboot_policy_init( - unsigned long *module_map, const multiboot_info_t *mbi, + unsigned long *module_map, struct boot_info *bi, void **policy_buffer, size_t *policy_size) { int i; - module_t *mod = (module_t *)__va(mbi->mods_addr); int rc = 0; u32 *_policy_start; unsigned long _policy_len; @@ -44,13 +44,13 @@ int __init xsm_multiboot_policy_init( * Try all modules and see whichever could be the binary policy. * Adjust module_map for the module that is the binary policy. */ - for ( i = mbi->mods_count-1; i >= 1; i-- ) + for ( i = bi->nr_modules-1; i >= 1; i-- ) { - if ( !test_bit(i, module_map) ) + if ( bi->mods[i].type != BOOTMOD_UNKNOWN ) continue; - _policy_start = bootstrap_map(mod + i); - _policy_len = mod[i].mod_end; + _policy_start = bootstrap_map_bm(&bi->mods[i]); + _policy_len = bi->mods[i].size; if ( (xsm_magic_t)(*_policy_start) == XSM_MAGIC ) { @@ -61,11 +61,12 @@ int __init xsm_multiboot_policy_init( _policy_len,_policy_start); __clear_bit(i, module_map); + bi->mods[i].type = BOOTMOD_XSM_POLICY; break; } - bootstrap_map(NULL); + bootstrap_map_bm(NULL); } return rc;