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Date: Fri, 23 Apr 2010 09:08:45 +0200 From: Vitaly Mayatskikh <v.mayatskih@...il.com> To: Vivek Goyal <vgoyal@...hat.com> Cc: "Eric W. Biederman" <ebiederm@...ssion.com>, Vitaly Mayatskikh <v.mayatskih@...il.com>, linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, Haren Myneni <hbabu@...ibm.com>, Neil Horman <nhorman@...driver.com>, Cong Wang <amwang@...hat.com>, kexec@...ts.infradead.org Subject: Re: [PATCH 0/5] Add second memory region for crash kernel At Thu, 22 Apr 2010 18:45:25 -0400, Vivek Goyal wrote: > Vitaly, have you really run into cases where 2G upper limit is a concern. > What is the configuration you have, how much memory it has and how much > memory are you planning to reserve for kdump kernel? I tried it on system with 96G of RAM. When I reserved 512M for kdump kernel, system stopped loading somewhere in user space. With larger reserved area /sbin/kexec can't load kernel (because of hardcoded limitation in /sbin/kexec). After removing this limitation kernel was loaded below 2G, but system even hasn't booted. Unfortunately, I don't remember exact details now and have no access to that machine temporarily. Will try to get access and come back with details. -- wbr, Vitaly -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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