From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Date: Tue, 14 Dec 2021 20:07:58 +0100 From: Borislav Petkov Subject: Re: [PATCH v17 02/10] x86: kdump: make the lower bound of crash kernel reservation consistent Message-ID: References: <20211210065533.2023-1-thunder.leizhen@huawei.com> <20211210065533.2023-3-thunder.leizhen@huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20211210065533.2023-3-thunder.leizhen@huawei.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Zhen Lei Cc: Thomas Gleixner , Ingo Molnar , x86@kernel.org, "H . Peter Anvin" , linux-kernel@vger.kernel.org, Dave Young , Baoquan He , Vivek Goyal , Eric Biederman , kexec@lists.infradead.org, Catalin Marinas , Will Deacon , linux-arm-kernel@lists.infradead.org, Rob Herring , Frank Rowand , devicetree@vger.kernel.org, Jonathan Corbet , linux-doc@vger.kernel.org, Randy Dunlap , Feng Zhou , Kefeng Wang , Chen Zhou On Fri, Dec 10, 2021 at 02:55:25PM +0800, Zhen Lei wrote: > From: Chen Zhou > > The lower bounds of crash kernel reservation and crash kernel low > reservation are different, use the consistent value CRASH_ALIGN. A big WHY is missing here to explain why the lower bound of the allocation range needs to be 16M and why was 0 wrong? > diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c > index 5cc60996eac56d6..6424ee4f23da2cf 100644 > --- a/arch/x86/kernel/setup.c > +++ b/arch/x86/kernel/setup.c > @@ -441,7 +441,8 @@ static int __init reserve_crashkernel_low(void) > return 0; > } > > - low_base = memblock_phys_alloc_range(low_size, CRASH_ALIGN, 0, CRASH_ADDR_LOW_MAX); > + low_base = memblock_phys_alloc_range(low_size, CRASH_ALIGN, CRASH_ALIGN, > + CRASH_ADDR_LOW_MAX); You don't have to break this line. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec