From nobody Fri Oct 18 05:19:31 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass(p=quarantine dis=none) header.from=suse.com ARC-Seal: i=1; a=rsa-sha256; t=1721662033; cv=none; d=zohomail.com; s=zohoarc; b=dEBCx8ZSkfaNf7yYiv4rYjJgRks6uYaxKHQhcqgDViOhOO1VTvWeX8dIhKIGmd9wUZNDxV7i0OtmPCWegoCizy1ZEYwb8lIvKq0AHkNJznzwfh2efHpWSlcV0NnEAoipqCOW8/AteFeNn+67aaAGk4b/BP37qAtI9jH3IGZW7J0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1721662033; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=RpkEMa1JSkMWC23Fdqu7c4oTDk4EMFdNp4g2Q+Fetic=; b=aM+cFTWWBB4HE0mbPjE9nSG+QLoDuGNZZI3Gxp2Xnq61QAMKijVLo94npP0bYXdt4LPRiAwyGJ5ARiOdtxIMC5IBgwwdUnQFf1SgUectp4IhbBepS5GyN+zq3aIcJrpNQLAbYnlibFe9zhxdVgGXVLcRmGEgQIlO5wnIn90KFFU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass header.from= (p=quarantine dis=none) Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 172166203364021.575734812781434; Mon, 22 Jul 2024 08:27:13 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.762184.1172305 (Exim 4.92) (envelope-from ) id 1sVuei-0004bM-8C; Mon, 22 Jul 2024 15:08:52 +0000 Received: by outflank-mailman (output) from mailman id 762184.1172305; Mon, 22 Jul 2024 15:08:52 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1sVuei-0004b8-5b; Mon, 22 Jul 2024 15:08:52 +0000 Received: by outflank-mailman (input) for mailman id 762184; Mon, 22 Jul 2024 15:08:50 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1sVueg-0004ZE-Mz for xen-devel@lists.xenproject.org; Mon, 22 Jul 2024 15:08:50 +0000 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 4b3685f9-483c-11ef-8776-851b0ebba9a2; Mon, 22 Jul 2024 17:08:47 +0200 (CEST) Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 439301F8D4; Mon, 22 Jul 2024 15:08:46 +0000 (UTC) Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 07F68136A9; Mon, 22 Jul 2024 15:08:46 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id BCNvAP51nmaOWAAAD6G6ig (envelope-from ); Mon, 22 Jul 2024 15:08:46 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version 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: 4b3685f9-483c-11ef-8776-851b0ebba9a2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1721660926; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=RpkEMa1JSkMWC23Fdqu7c4oTDk4EMFdNp4g2Q+Fetic=; b=fwUrGDDlXllR3vP4sUh+N5d5eC2PcGImuUJy2LZYYGexcwSug3ZhHgpZih/KdGV+ct297K mHkfKvPmET2CTzK85Jx8z2QXETNkamtpJI3avuHmILIHOFapcjxpACKe3eKTE56G4GT8U2 RBsmQztXwcMj+VzudL25EqgdRJe3diU= Authentication-Results: smtp-out2.suse.de; dkim=pass header.d=suse.com header.s=susede1 header.b=fwUrGDDl DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1721660926; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=RpkEMa1JSkMWC23Fdqu7c4oTDk4EMFdNp4g2Q+Fetic=; b=fwUrGDDlXllR3vP4sUh+N5d5eC2PcGImuUJy2LZYYGexcwSug3ZhHgpZih/KdGV+ct297K mHkfKvPmET2CTzK85Jx8z2QXETNkamtpJI3avuHmILIHOFapcjxpACKe3eKTE56G4GT8U2 RBsmQztXwcMj+VzudL25EqgdRJe3diU= From: Juergen Gross To: minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org Cc: samuel.thibault@ens-lyon.org, wl@xen.org, Juergen Gross Subject: [PATCH] mini-os: mm: don't have two large arrays of the same kind Date: Mon, 22 Jul 2024 17:08:43 +0200 Message-ID: <20240722150843.3947-1-jgross@suse.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spamd-Result: default: False [0.19 / 50.00]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; R_DKIM_ALLOW(-0.20)[suse.com:s=susede1]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; FUZZY_BLOCKED(0.00)[rspamd.com]; ARC_NA(0.00)[]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCPT_COUNT_FIVE(0.00)[5]; DNSWL_BLOCKED(0.00)[2a07:de40:b281:106:10:150:64:167:received]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_TLS_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.com:+]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:dkim,suse.com:email] X-Spam-Level: X-Rspamd-Queue-Id: 439301F8D4 X-Spam-Score: 0.19 X-Spam-Flag: NO X-Rspamd-Action: no action X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Bar: / X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1721662034024116600 Content-Type: text/plain; charset="utf-8" In the CONFIG_PARAVIRT case there are two identical static arrays of more than 8kB size with function scope. As the two functions never nest, a single array of file scope can replace the two existing instances. Signed-off-by: Juergen Gross Reviewed-by: Samuel Thibault --- arch/x86/mm.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/x86/mm.c b/arch/x86/mm.c index be1cf0cf..7ddf16e4 100644 --- a/arch/x86/mm.c +++ b/arch/x86/mm.c @@ -198,6 +198,10 @@ static void new_pt_frame(unsigned long *pt_pfn, unsign= ed long prev_l_mfn, *pt_pfn +=3D 1; } =20 +#ifdef CONFIG_PARAVIRT +static mmu_update_t mmu_updates[L1_PAGETABLE_ENTRIES + 1]; +#endif + /* * Build the initial pagetable. */ @@ -209,7 +213,6 @@ static void build_pagetable(unsigned long *start_pfn, u= nsigned long *max_pfn) unsigned long pt_mfn =3D pfn_to_mfn(virt_to_pfn(pt_base)); unsigned long offset; #ifdef CONFIG_PARAVIRT - static mmu_update_t mmu_updates[L1_PAGETABLE_ENTRIES + 1]; int count =3D 0; int rc; #endif @@ -323,7 +326,6 @@ static void set_readonly(void *text, void *etext) unsigned long offset; unsigned long page_size =3D PAGE_SIZE; #ifdef CONFIG_PARAVIRT - static mmu_update_t mmu_updates[L1_PAGETABLE_ENTRIES + 1]; int count =3D 0; int rc; #endif --=20 2.43.0