From patchwork Wed Jan 17 07:58:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Xu X-Patchwork-Id: 1887285 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=EzBInvQy; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TFJFg1TPwz1yPJ for ; Wed, 17 Jan 2024 19:00:07 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rQ0pL-000782-D8; Wed, 17 Jan 2024 02:59:11 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rQ0pK-00077m-EF for qemu-devel@nongnu.org; Wed, 17 Jan 2024 02:59:10 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rQ0pI-00027V-VT for qemu-devel@nongnu.org; Wed, 17 Jan 2024 02:59:10 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1705478348; 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=4szyQrnHzrYkL2h4yzGCzHjCPfkkzLtPUyuvC80BU3U=; b=EzBInvQyB4b5iL35B472gFP7zZUERgxrMZZTapXqLeqEqzpJSUAZKu43jUWybZ0MaqVQe5 ZdR9HL4+sDw47GJyPuydkOIdsKw3jxjuWcMqYRgVJpzkEnDeBo4z4KkP6jt+eazduu/j3l TWqbWtssuzJzbIf6rqbWazRW8MxpAtY= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-489-C06tPBHFMFiiPwxL3c2vEg-1; Wed, 17 Jan 2024 02:59:06 -0500 X-MC-Unique: C06tPBHFMFiiPwxL3c2vEg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (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 mimecast-mx02.redhat.com (Postfix) with ESMTPS id 2D9C31C060C2; Wed, 17 Jan 2024 07:59:06 +0000 (UTC) Received: from x1n.redhat.com (unknown [10.72.116.92]) by smtp.corp.redhat.com (Postfix) with ESMTP id F3620C15A0C; Wed, 17 Jan 2024 07:59:02 +0000 (UTC) From: peterx@redhat.com To: qemu-devel@nongnu.org Cc: Prasad Pandit , peterx@redhat.com, Fabiano Rosas , Bandan Das , Julia Suvorova Subject: [PATCH 3/3] analyze-migration.py: Remove trick on parsing ramblocks Date: Wed, 17 Jan 2024 15:58:48 +0800 Message-ID: <20240117075848.139045-4-peterx@redhat.com> In-Reply-To: <20240117075848.139045-1-peterx@redhat.com> References: <20240117075848.139045-1-peterx@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 Received-SPF: pass client-ip=170.10.129.124; envelope-from=peterx@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -38 X-Spam_score: -3.9 X-Spam_bar: --- X-Spam_report: (-3.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.806, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Peter Xu RAM_SAVE_FLAG_MEM_SIZE contains the total length of ramblock idstr to know whether scanning of ramblocks is complete. Drop the trick. Signed-off-by: Peter Xu Reviewed-by: Fabiano Rosas --- scripts/analyze-migration.py | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/scripts/analyze-migration.py b/scripts/analyze-migration.py index a39dfb8766..8a254a5b6a 100755 --- a/scripts/analyze-migration.py +++ b/scripts/analyze-migration.py @@ -151,17 +151,12 @@ def read(self): addr &= ~(self.TARGET_PAGE_SIZE - 1) if flags & self.RAM_SAVE_FLAG_MEM_SIZE: - while True: + total_length = addr + while total_length > 0: namelen = self.file.read8() - # We assume that no RAM chunk is big enough to ever - # hit the first byte of the address, so when we see - # a zero here we know it has to be an address, not the - # length of the next block. - if namelen == 0: - self.file.file.seek(-1, 1) - break self.name = self.file.readstr(len = namelen) len = self.file.read64() + total_length -= len self.sizeinfo[self.name] = '0x%016x' % len if self.write_memory: print(self.name)