From patchwork Mon Oct 21 00:45:44 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: 13843464 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 1DF7DD3C935 for ; Mon, 21 Oct 2024 00:57:39 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.823043.1237137 (Exim 4.92) (envelope-from ) id 1t2gji-0001wP-UK; Mon, 21 Oct 2024 00:57:30 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 823043.1237137; Mon, 21 Oct 2024 00:57:30 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1t2gji-0001vF-Lr; Mon, 21 Oct 2024 00:57:30 +0000 Received: by outflank-mailman (input) for mailman id 823043; Mon, 21 Oct 2024 00:57:28 +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 1t2ga6-000738-Ow for xen-devel@lists.xenproject.org; Mon, 21 Oct 2024 00:47:34 +0000 Received: from sender3-of-o59.zoho.com (sender3-of-o59.zoho.com [136.143.184.59]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 0e7738f3-8f46-11ef-a0be-8be0dac302b0; Mon, 21 Oct 2024 02:47:33 +0200 (CEST) Received: by mx.zohomail.com with SMTPS id 1729471594102634.8207739049702; Sun, 20 Oct 2024 17:46:34 -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: 0e7738f3-8f46-11ef-a0be-8be0dac302b0 ARC-Seal: i=1; a=rsa-sha256; t=1729471595; cv=none; d=zohomail.com; s=zohoarc; b=DwBCWLzNDovqZO5A9SXMghcH2KD50zs29+J6GUIcLtpoCvmPaS1zrNs85gIQEX9BiTBElkSayoF3xl7ABzdrskKCHsDOCsc/6Hy4N6VRSCIuWkrJo+xJRfVsla12uuB7MTseHX4p+T7kCV5uGK4t4I7pxLN5zmJ4N9hcgvHNyrg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1729471595; 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=gBcmVTmdjlVx1YSjoPePx3/LQoLpGu8yyKS5g8B8j3Q=; b=jyX2LyLDGO46yhvd0aPQxMj7fyBiJRf57HKzlL1nylqHBcBixsG49NhgY9e4Y1X4osqdJWicA7BrekyH4+DE5YsSilXZQJ4ECwX5DpV195SLKte3nMwRoD4SnhDeNfnyVipe+VDr2Bps9KD7pQ4zZ/e5ceYqnADpJd88sMSBiRk= 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=1729471595; 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=gBcmVTmdjlVx1YSjoPePx3/LQoLpGu8yyKS5g8B8j3Q=; b=HRxnN92+I8POhxf1RYKBqGlJk64RR2HEYD1BDj4K2x44SzNZObo6HwVYTIrH6VGy IzcsEDOiqKtQ2S33Z7eNRDIAf+mapElmYN4c1E4FXL+IfOVWdMsVuiCQv3JU29CuhMC QalrGqlJUQZRb293r7/mGRMUioJXCAiGQdzd88ko= 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 v7 09/38] x86/boot: transition relocation calculations to struct boot_module Date: Sun, 20 Oct 2024 20:45:44 -0400 Message-Id: <20241021004613.18793-10-dpsmith@apertussolutions.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20241021004613.18793-1-dpsmith@apertussolutions.com> References: <20241021004613.18793-1-dpsmith@apertussolutions.com> MIME-Version: 1.0 X-ZohoMailClient: External Use struct boot_module fields, start and size, when calculating the relocation address and size. It also ensures that early_mod references are kept in sync. Signed-off-by: Daniel P. Smith --- Changes since v6: - introduce local s and l refs for start and size, shortening the lines while correcting the indentation style Changes since v5: - removed unnecessary paddr_to_pfn, allowing condition to collapse to one line - correct a missed conversion from .mod->mod_start to .start --- xen/arch/x86/setup.c | 34 ++++++++++++++-------------------- 1 file changed, 14 insertions(+), 20 deletions(-) diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c index 4e5d4055e7dd..b02391b887b1 100644 --- a/xen/arch/x86/setup.c +++ b/xen/arch/x86/setup.c @@ -1507,7 +1507,7 @@ void asmlinkage __init noreturn __start_xen(unsigned long mbi_p) * move mod[0], we incorporate this as extra space at the start. */ struct boot_module *bm = &bi->mods[j]; - unsigned long size = PAGE_ALIGN(bm->headroom + bm->mod->mod_end); + unsigned long size = PAGE_ALIGN(bm->headroom + bm->size); if ( bm->relocated ) continue; @@ -1519,15 +1519,13 @@ void asmlinkage __init noreturn __start_xen(unsigned long mbi_p) if ( highmem_start && end > highmem_start ) continue; - if ( s < end && - (bm->headroom || - ((end - size) >> PAGE_SHIFT) > bm->mod->mod_start) ) + if ( s < end && (bm->headroom || (end - size) > bm->start) ) { - move_memory(end - size + bm->headroom, - (uint64_t)bm->mod->mod_start << PAGE_SHIFT, - bm->mod->mod_end); - bm->mod->mod_start = (end - size) >> PAGE_SHIFT; - bm->mod->mod_end += bm->headroom; + move_memory(end - size + bm->headroom, bm->start, bm->size); + bm->start = (end - size); + bm->mod->mod_start = paddr_to_pfn(bm->start); + bm->size += bm->headroom; + bm->mod->mod_end = bm->size; bm->relocated = true; } } @@ -1558,10 +1556,9 @@ void asmlinkage __init noreturn __start_xen(unsigned long mbi_p) panic("Not enough memory to relocate the dom0 kernel image\n"); for ( i = 0; i < bi->nr_modules; ++i ) { - uint64_t s = (uint64_t)bi->mods[i].mod->mod_start << PAGE_SHIFT; + uint64_t s = bi->mods[i].start; - reserve_e820_ram(&boot_e820, s, - s + PAGE_ALIGN(bi->mods[i].mod->mod_end)); + reserve_e820_ram(&boot_e820, s, s + PAGE_ALIGN(bi->mods[i].size)); } if ( !xen_phys_start ) @@ -1639,8 +1636,7 @@ void asmlinkage __init noreturn __start_xen(unsigned long mbi_p) map_e = boot_e820.map[j].addr + boot_e820.map[j].size; for ( j = 0; j < bi->nr_modules; ++j ) { - uint64_t end = pfn_to_paddr(bi->mods[j].mod->mod_start) + - bi->mods[j].mod->mod_end; + uint64_t end = bi->mods[j].start + bi->mods[j].size; if ( map_e < end ) map_e = end; @@ -1714,12 +1710,10 @@ void asmlinkage __init noreturn __start_xen(unsigned long mbi_p) for ( i = 0; i < bi->nr_modules; ++i ) { - set_pdx_range(bi->mods[i].mod->mod_start, - bi->mods[i].mod->mod_start + - PFN_UP(bi->mods[i].mod->mod_end)); - map_pages_to_xen((unsigned long)mfn_to_virt(bi->mods[i].mod->mod_start), - _mfn(bi->mods[i].mod->mod_start), - PFN_UP(bi->mods[i].mod->mod_end), PAGE_HYPERVISOR); + unsigned long s = bi->mods[i].start, l = bi->mods[i].size; + set_pdx_range(paddr_to_pfn(s), paddr_to_pfn(s) + PFN_UP(l)); + map_pages_to_xen((unsigned long)maddr_to_virt(s), maddr_to_mfn(s), + PFN_UP(l), PAGE_HYPERVISOR); } #ifdef CONFIG_KEXEC