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bh=4WuJOQlNfEjZEgWh7mIgx+GQ0z3C84AGorDeAuZhOK8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D4u/UIbzLlEIUGvsu7oIEk1r9y1HdyXe4bGFS4uPFFZlE1SvR0Ic/VsazPLkmlfYo MGSySQinsMEKx0a460QO0p336yu3q4NZYJLjS2vVr0K3k0pnoZ2v/GrKkVnCKHf3ZV mwea1G2DA7ZiDVovETmAVBrYbEJIl1dz6OHL4Gts= From: Mike Rapoport To: Andrew Morton Subject: [PATCH 01/15] KVM: PPC: Book3S HV: simplify kvm_cma_reserve() Date: Tue, 28 Jul 2020 08:11:39 +0300 Message-Id: <20200728051153.1590-2-rppt@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200728051153.1590-1-rppt@kernel.org> References: <20200728051153.1590-1-rppt@kernel.org> MIME-Version: 1.0 Cc: linux-sh@vger.kernel.org, Peter Zijlstra , Benjamin Herrenschmidt , Dave Hansen , linux-mips@vger.kernel.org, Max Filippov , Paul Mackerras , sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, Will Deacon , Stafford Horne , linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Yoshinori Sato , Michael Ellerman , x86@kernel.org, Russell King , Mike Rapoport , clang-built-linux@googlegroups.com, Ingo Molnar , Catalin Marinas , uclinux-h8-devel@lists.sourceforge.jp, linux-xtensa@linux-xtensa.org, openrisc@lists.librecores.org, Borislav Petkov , Andy Lutomirski , Paul Walmsley , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Michal Simek , linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Palmer Dabbelt , Christoph Hellwig , Mike Rapoport X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" From: Mike Rapoport The memory size calculation in kvm_cma_reserve() traverses memblock.memory rather than simply call memblock_phys_mem_size(). The comment in that function suggests that at some point there should have been call to memblock_analyze() before memblock_phys_mem_size() could be used. As of now, there is no memblock_analyze() at all and memblock_phys_mem_size() can be used as soon as cold-plug memory is registerd with memblock. Replace loop over memblock.memory with a call to memblock_phys_mem_size(). Signed-off-by: Mike Rapoport --- arch/powerpc/kvm/book3s_hv_builtin.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index 7cd3cf3d366b..56ab0d28de2a 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -95,22 +95,15 @@ EXPORT_SYMBOL_GPL(kvm_free_hpt_cma); void __init kvm_cma_reserve(void) { unsigned long align_size; - struct memblock_region *reg; - phys_addr_t selected_size = 0; + phys_addr_t selected_size; /* * We need CMA reservation only when we are in HV mode */ if (!cpu_has_feature(CPU_FTR_HVMODE)) return; - /* - * We cannot use memblock_phys_mem_size() here, because - * memblock_analyze() has not been called yet. - */ - for_each_memblock(memory, reg) - selected_size += memblock_region_memory_end_pfn(reg) - - memblock_region_memory_base_pfn(reg); + selected_size = PHYS_PFN(memblock_phys_mem_size()); selected_size = (selected_size * kvm_cma_resv_ratio / 100) << PAGE_SHIFT; if (selected_size) { pr_debug("%s: reserving %ld MiB for global area\n", __func__, -- 2.26.2 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 873EBC433E8 for ; Tue, 28 Jul 2020 05:12:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6163A21883 for ; Tue, 28 Jul 2020 05:12:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595913145; bh=4WuJOQlNfEjZEgWh7mIgx+GQ0z3C84AGorDeAuZhOK8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=r2IWj5CehypJg/aLR8+HILgypHMWLqpwgbZ1heuO500VW7m5fwkSB36sxz8TgL3gK B8nYCibhzV8q7vBFnq933nShK2UogCtvAzs5UpbDYeMrHnpRBapkCcvc8KJW/7Bg1V lCSMa+Hg9cFhxCoZ03+nW7v+bE7iWDZUz+o1HToI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726319AbgG1FMY (ORCPT ); Tue, 28 Jul 2020 01:12:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:33874 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726251AbgG1FMY (ORCPT ); Tue, 28 Jul 2020 01:12:24 -0400 Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5790E22B3F; Tue, 28 Jul 2020 05:12:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595913143; bh=4WuJOQlNfEjZEgWh7mIgx+GQ0z3C84AGorDeAuZhOK8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D4u/UIbzLlEIUGvsu7oIEk1r9y1HdyXe4bGFS4uPFFZlE1SvR0Ic/VsazPLkmlfYo MGSySQinsMEKx0a460QO0p336yu3q4NZYJLjS2vVr0K3k0pnoZ2v/GrKkVnCKHf3ZV mwea1G2DA7ZiDVovETmAVBrYbEJIl1dz6OHL4Gts= From: Mike Rapoport To: Andrew Morton Cc: Andy Lutomirski , Benjamin Herrenschmidt , Borislav Petkov , Catalin Marinas , Christoph Hellwig , Dave Hansen , Ingo Molnar , Marek Szyprowski , Max Filippov , Michael Ellerman , Michal Simek , Mike Rapoport , Mike Rapoport , Palmer Dabbelt , Paul Mackerras , Paul Walmsley , Peter Zijlstra , Russell King , Stafford Horne , Thomas Gleixner , Will Deacon , Yoshinori Sato , clang-built-linux@googlegroups.com, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-c6x-dev@linux-c6x.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, openrisc@lists.librecores.org, sparclinux@vger.kernel.org, uclinux-h8-devel@lists.sourceforge.jp, x86@kernel.org Subject: [PATCH 01/15] KVM: PPC: Book3S HV: simplify kvm_cma_reserve() Date: Tue, 28 Jul 2020 08:11:39 +0300 Message-Id: <20200728051153.1590-2-rppt@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200728051153.1590-1-rppt@kernel.org> References: <20200728051153.1590-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Mike Rapoport The memory size calculation in kvm_cma_reserve() traverses memblock.memory rather than simply call memblock_phys_mem_size(). The comment in that function suggests that at some point there should have been call to memblock_analyze() before memblock_phys_mem_size() could be used. As of now, there is no memblock_analyze() at all and memblock_phys_mem_size() can be used as soon as cold-plug memory is registerd with memblock. Replace loop over memblock.memory with a call to memblock_phys_mem_size(). Signed-off-by: Mike Rapoport --- arch/powerpc/kvm/book3s_hv_builtin.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index 7cd3cf3d366b..56ab0d28de2a 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -95,22 +95,15 @@ EXPORT_SYMBOL_GPL(kvm_free_hpt_cma); void __init kvm_cma_reserve(void) { unsigned long align_size; - struct memblock_region *reg; - phys_addr_t selected_size = 0; + phys_addr_t selected_size; /* * We need CMA reservation only when we are in HV mode */ if (!cpu_has_feature(CPU_FTR_HVMODE)) return; - /* - * We cannot use memblock_phys_mem_size() here, because - * memblock_analyze() has not been called yet. - */ - for_each_memblock(memory, reg) - selected_size += memblock_region_memory_end_pfn(reg) - - memblock_region_memory_base_pfn(reg); + selected_size = PHYS_PFN(memblock_phys_mem_size()); selected_size = (selected_size * kvm_cma_resv_ratio / 100) << PAGE_SHIFT; if (selected_size) { pr_debug("%s: reserving %ld MiB for global area\n", __func__, -- 2.26.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 924C0C433F4 for ; Tue, 28 Jul 2020 05:12:42 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 61DD721883 for ; Tue, 28 Jul 2020 05:12:42 +0000 (UTC) Authentication-Results: mail.kernel.org; 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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595913143; bh=4WuJOQlNfEjZEgWh7mIgx+GQ0z3C84AGorDeAuZhOK8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D4u/UIbzLlEIUGvsu7oIEk1r9y1HdyXe4bGFS4uPFFZlE1SvR0Ic/VsazPLkmlfYo MGSySQinsMEKx0a460QO0p336yu3q4NZYJLjS2vVr0K3k0pnoZ2v/GrKkVnCKHf3ZV mwea1G2DA7ZiDVovETmAVBrYbEJIl1dz6OHL4Gts= From: Mike Rapoport To: Andrew Morton Subject: [PATCH 01/15] KVM: PPC: Book3S HV: simplify kvm_cma_reserve() Date: Tue, 28 Jul 2020 08:11:39 +0300 Message-Id: <20200728051153.1590-2-rppt@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200728051153.1590-1-rppt@kernel.org> References: <20200728051153.1590-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200728_011224_522305_C91C6BA0 X-CRM114-Status: GOOD ( 17.97 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-sh@vger.kernel.org, Peter Zijlstra , Benjamin Herrenschmidt , Dave Hansen , linux-mips@vger.kernel.org, Max Filippov , Paul Mackerras , sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, Will Deacon , Stafford Horne , Marek Szyprowski , linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Yoshinori Sato , Michael Ellerman , x86@kernel.org, Russell King , Mike Rapoport , clang-built-linux@googlegroups.com, Ingo Molnar , Catalin Marinas , uclinux-h8-devel@lists.sourceforge.jp, linux-xtensa@linux-xtensa.org, openrisc@lists.librecores.org, Borislav Petkov , Andy Lutomirski , Paul Walmsley , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Michal Simek , linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Palmer Dabbelt , Christoph Hellwig , Mike Rapoport Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Mike Rapoport The memory size calculation in kvm_cma_reserve() traverses memblock.memory rather than simply call memblock_phys_mem_size(). The comment in that function suggests that at some point there should have been call to memblock_analyze() before memblock_phys_mem_size() could be used. As of now, there is no memblock_analyze() at all and memblock_phys_mem_size() can be used as soon as cold-plug memory is registerd with memblock. Replace loop over memblock.memory with a call to memblock_phys_mem_size(). Signed-off-by: Mike Rapoport --- arch/powerpc/kvm/book3s_hv_builtin.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index 7cd3cf3d366b..56ab0d28de2a 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -95,22 +95,15 @@ EXPORT_SYMBOL_GPL(kvm_free_hpt_cma); void __init kvm_cma_reserve(void) { unsigned long align_size; - struct memblock_region *reg; - phys_addr_t selected_size = 0; + phys_addr_t selected_size; /* * We need CMA reservation only when we are in HV mode */ if (!cpu_has_feature(CPU_FTR_HVMODE)) return; - /* - * We cannot use memblock_phys_mem_size() here, because - * memblock_analyze() has not been called yet. - */ - for_each_memblock(memory, reg) - selected_size += memblock_region_memory_end_pfn(reg) - - memblock_region_memory_base_pfn(reg); + selected_size = PHYS_PFN(memblock_phys_mem_size()); selected_size = (selected_size * kvm_cma_resv_ratio / 100) << PAGE_SHIFT; if (selected_size) { pr_debug("%s: reserving %ld MiB for global area\n", __func__, -- 2.26.2 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Rapoport Date: Tue, 28 Jul 2020 05:11:39 +0000 Subject: [PATCH 01/15] KVM: PPC: Book3S HV: simplify kvm_cma_reserve() Message-Id: <20200728051153.1590-2-rppt@kernel.org> List-Id: References: <20200728051153.1590-1-rppt@kernel.org> In-Reply-To: <20200728051153.1590-1-rppt@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Andrew Morton Cc: linux-sh@vger.kernel.org, Peter Zijlstra , Benjamin Herrenschmidt , Dave Hansen , linux-mips@vger.kernel.org, Max Filippov , Paul Mackerras , sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, Will Deacon , Stafford Horne , Marek Szyprowski , linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Yoshinori Sato , Michael Ellerman , x86@kernel.org, Russell King , Mike Rapoport , clang-built-linux@googlegroups.com, Ingo Molnar , Catalin Marinas , uclinux-h8-devel@lists.sourceforge.jp, linux-xtensa@linux-xtensa.org, openrisc@lists.librecores.org, Borislav Petkov , Andy Lutomirski , Paul Walmsley , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Michal Simek , linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Palmer Dabbelt , Christoph Hellwig , Mike Rapoport From: Mike Rapoport The memory size calculation in kvm_cma_reserve() traverses memblock.memory rather than simply call memblock_phys_mem_size(). The comment in that function suggests that at some point there should have been call to memblock_analyze() before memblock_phys_mem_size() could be used. As of now, there is no memblock_analyze() at all and memblock_phys_mem_size() can be used as soon as cold-plug memory is registerd with memblock. Replace loop over memblock.memory with a call to memblock_phys_mem_size(). Signed-off-by: Mike Rapoport --- arch/powerpc/kvm/book3s_hv_builtin.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index 7cd3cf3d366b..56ab0d28de2a 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -95,22 +95,15 @@ EXPORT_SYMBOL_GPL(kvm_free_hpt_cma); void __init kvm_cma_reserve(void) { unsigned long align_size; - struct memblock_region *reg; - phys_addr_t selected_size = 0; + phys_addr_t selected_size; /* * We need CMA reservation only when we are in HV mode */ if (!cpu_has_feature(CPU_FTR_HVMODE)) return; - /* - * We cannot use memblock_phys_mem_size() here, because - * memblock_analyze() has not been called yet. - */ - for_each_memblock(memory, reg) - selected_size += memblock_region_memory_end_pfn(reg) - - memblock_region_memory_base_pfn(reg); + selected_size = PHYS_PFN(memblock_phys_mem_size()); selected_size = (selected_size * kvm_cma_resv_ratio / 100) << PAGE_SHIFT; if (selected_size) { pr_debug("%s: reserving %ld MiB for global area\n", __func__, -- 2.26.2 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Rapoport Date: Tue, 28 Jul 2020 05:12:25 -0000 Subject: [OpenRISC] [PATCH 01/15] KVM: PPC: Book3S HV: simplify kvm_cma_reserve() In-Reply-To: <20200728051153.1590-1-rppt@kernel.org> References: <20200728051153.1590-1-rppt@kernel.org> Message-ID: <20200728051153.1590-2-rppt@kernel.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: openrisc@lists.librecores.org From: Mike Rapoport The memory size calculation in kvm_cma_reserve() traverses memblock.memory rather than simply call memblock_phys_mem_size(). The comment in that function suggests that at some point there should have been call to memblock_analyze() before memblock_phys_mem_size() could be used. As of now, there is no memblock_analyze() at all and memblock_phys_mem_size() can be used as soon as cold-plug memory is registerd with memblock. Replace loop over memblock.memory with a call to memblock_phys_mem_size(). Signed-off-by: Mike Rapoport --- arch/powerpc/kvm/book3s_hv_builtin.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index 7cd3cf3d366b..56ab0d28de2a 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -95,22 +95,15 @@ EXPORT_SYMBOL_GPL(kvm_free_hpt_cma); void __init kvm_cma_reserve(void) { unsigned long align_size; - struct memblock_region *reg; - phys_addr_t selected_size = 0; + phys_addr_t selected_size; /* * We need CMA reservation only when we are in HV mode */ if (!cpu_has_feature(CPU_FTR_HVMODE)) return; - /* - * We cannot use memblock_phys_mem_size() here, because - * memblock_analyze() has not been called yet. - */ - for_each_memblock(memory, reg) - selected_size += memblock_region_memory_end_pfn(reg) - - memblock_region_memory_base_pfn(reg); + selected_size = PHYS_PFN(memblock_phys_mem_size()); selected_size = (selected_size * kvm_cma_resv_ratio / 100) << PAGE_SHIFT; if (selected_size) { pr_debug("%s: reserving %ld MiB for global area\n", __func__, -- 2.26.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1CE98C433E5 for ; Tue, 28 Jul 2020 05:19:00 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C36F620658 for ; Tue, 28 Jul 2020 05:18:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="D4u/UIbz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C36F620658 Authentication-Results: mail.kernel.org; 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Tue, 28 Jul 2020 15:12:25 +1000 (AEST) Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5790E22B3F; Tue, 28 Jul 2020 05:12:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595913143; bh=4WuJOQlNfEjZEgWh7mIgx+GQ0z3C84AGorDeAuZhOK8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D4u/UIbzLlEIUGvsu7oIEk1r9y1HdyXe4bGFS4uPFFZlE1SvR0Ic/VsazPLkmlfYo MGSySQinsMEKx0a460QO0p336yu3q4NZYJLjS2vVr0K3k0pnoZ2v/GrKkVnCKHf3ZV mwea1G2DA7ZiDVovETmAVBrYbEJIl1dz6OHL4Gts= From: Mike Rapoport To: Andrew Morton Subject: [PATCH 01/15] KVM: PPC: Book3S HV: simplify kvm_cma_reserve() Date: Tue, 28 Jul 2020 08:11:39 +0300 Message-Id: <20200728051153.1590-2-rppt@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200728051153.1590-1-rppt@kernel.org> References: <20200728051153.1590-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-sh@vger.kernel.org, Peter Zijlstra , Dave Hansen , linux-mips@vger.kernel.org, Max Filippov , Paul Mackerras , sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, Will Deacon , Stafford Horne , Marek Szyprowski , linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Yoshinori Sato , x86@kernel.org, Russell King , Mike Rapoport , clang-built-linux@googlegroups.com, Ingo Molnar , Catalin Marinas , uclinux-h8-devel@lists.sourceforge.jp, linux-xtensa@linux-xtensa.org, openrisc@lists.librecores.org, Borislav Petkov , Andy Lutomirski , Paul Walmsley , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Michal Simek , linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Palmer Dabbelt , Christoph Hellwig , Mike Rapoport Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Mike Rapoport The memory size calculation in kvm_cma_reserve() traverses memblock.memory rather than simply call memblock_phys_mem_size(). The comment in that function suggests that at some point there should have been call to memblock_analyze() before memblock_phys_mem_size() could be used. As of now, there is no memblock_analyze() at all and memblock_phys_mem_size() can be used as soon as cold-plug memory is registerd with memblock. Replace loop over memblock.memory with a call to memblock_phys_mem_size(). Signed-off-by: Mike Rapoport --- arch/powerpc/kvm/book3s_hv_builtin.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index 7cd3cf3d366b..56ab0d28de2a 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -95,22 +95,15 @@ EXPORT_SYMBOL_GPL(kvm_free_hpt_cma); void __init kvm_cma_reserve(void) { unsigned long align_size; - struct memblock_region *reg; - phys_addr_t selected_size = 0; + phys_addr_t selected_size; /* * We need CMA reservation only when we are in HV mode */ if (!cpu_has_feature(CPU_FTR_HVMODE)) return; - /* - * We cannot use memblock_phys_mem_size() here, because - * memblock_analyze() has not been called yet. - */ - for_each_memblock(memory, reg) - selected_size += memblock_region_memory_end_pfn(reg) - - memblock_region_memory_base_pfn(reg); + selected_size = PHYS_PFN(memblock_phys_mem_size()); selected_size = (selected_size * kvm_cma_resv_ratio / 100) << PAGE_SHIFT; if (selected_size) { pr_debug("%s: reserving %ld MiB for global area\n", __func__, -- 2.26.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C3E7DC433E8 for ; Tue, 28 Jul 2020 05:14:12 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8DE0222B48 for ; Tue, 28 Jul 2020 05:14:12 +0000 (UTC) Authentication-Results: mail.kernel.org; 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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595913143; bh=4WuJOQlNfEjZEgWh7mIgx+GQ0z3C84AGorDeAuZhOK8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D4u/UIbzLlEIUGvsu7oIEk1r9y1HdyXe4bGFS4uPFFZlE1SvR0Ic/VsazPLkmlfYo MGSySQinsMEKx0a460QO0p336yu3q4NZYJLjS2vVr0K3k0pnoZ2v/GrKkVnCKHf3ZV mwea1G2DA7ZiDVovETmAVBrYbEJIl1dz6OHL4Gts= From: Mike Rapoport To: Andrew Morton Subject: [PATCH 01/15] KVM: PPC: Book3S HV: simplify kvm_cma_reserve() Date: Tue, 28 Jul 2020 08:11:39 +0300 Message-Id: <20200728051153.1590-2-rppt@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200728051153.1590-1-rppt@kernel.org> References: <20200728051153.1590-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200728_011224_522305_C91C6BA0 X-CRM114-Status: GOOD ( 17.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-sh@vger.kernel.org, Peter Zijlstra , Benjamin Herrenschmidt , Dave Hansen , linux-mips@vger.kernel.org, Max Filippov , Paul Mackerras , sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, Will Deacon , Stafford Horne , Marek Szyprowski , linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Yoshinori Sato , Michael Ellerman , x86@kernel.org, Russell King , Mike Rapoport , clang-built-linux@googlegroups.com, Ingo Molnar , Catalin Marinas , uclinux-h8-devel@lists.sourceforge.jp, linux-xtensa@linux-xtensa.org, openrisc@lists.librecores.org, Borislav Petkov , Andy Lutomirski , Paul Walmsley , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Michal Simek , linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Palmer Dabbelt , Christoph Hellwig , Mike Rapoport Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Mike Rapoport The memory size calculation in kvm_cma_reserve() traverses memblock.memory rather than simply call memblock_phys_mem_size(). The comment in that function suggests that at some point there should have been call to memblock_analyze() before memblock_phys_mem_size() could be used. As of now, there is no memblock_analyze() at all and memblock_phys_mem_size() can be used as soon as cold-plug memory is registerd with memblock. Replace loop over memblock.memory with a call to memblock_phys_mem_size(). Signed-off-by: Mike Rapoport --- arch/powerpc/kvm/book3s_hv_builtin.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index 7cd3cf3d366b..56ab0d28de2a 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -95,22 +95,15 @@ EXPORT_SYMBOL_GPL(kvm_free_hpt_cma); void __init kvm_cma_reserve(void) { unsigned long align_size; - struct memblock_region *reg; - phys_addr_t selected_size = 0; + phys_addr_t selected_size; /* * We need CMA reservation only when we are in HV mode */ if (!cpu_has_feature(CPU_FTR_HVMODE)) return; - /* - * We cannot use memblock_phys_mem_size() here, because - * memblock_analyze() has not been called yet. - */ - for_each_memblock(memory, reg) - selected_size += memblock_region_memory_end_pfn(reg) - - memblock_region_memory_base_pfn(reg); + selected_size = PHYS_PFN(memblock_phys_mem_size()); selected_size = (selected_size * kvm_cma_resv_ratio / 100) << PAGE_SHIFT; if (selected_size) { pr_debug("%s: reserving %ld MiB for global area\n", __func__, -- 2.26.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel