From: Ian Jackson <Ian.Jackson@eu.citrix.com>
To: <stefano.stabellini@eu.citrix.com>
Cc: <hpa@zytor.com>, <xen-devel@lists.xensource.com>,
<konrad.wilk@oracle.com>, <linux-kernel@vger.kernel.org>,
<mingo@elte.hu>, <hpa@linux.intel.com>, <yinghai@kernel.org>
Subject: Re: [Xen-devel] [PATCH 1/3] x86: calculate precisely the memory needed by init_memory_mapping
Date: Fri, 17 Jun 2011 18:11:39 +0100 [thread overview]
Message-ID: <19963.35531.684825.285975@mariner.uk.xensource.com> (raw)
In-Reply-To: <m2n.s.1QU0lc-137774@chiark.greenend.org.uk>
stefano.stabellini@eu.citrix.com writes ("[Xen-devel] [PATCH 1/3] x86: calculate precisely the memory needed by init_memory_mapping"):
> + if (pgt_buf_end != pgt_buf_top)
> + printk(KERN_DEBUG "initial kernel pagetable allocation wasted %lx"
> + " pages\n", pgt_buf_top - pgt_buf_end);
If (due to a bug) pgt_buf_end > pgt_buf_top, this will printk a
message about wasting a negative number of pages, rather than
crashing. Is there something else that will catch this case ?
Ian.
next prev parent reply other threads:[~2011-06-17 17:11 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-07 18:13 [PATCH 0/3] x86: remove x86_init.mapping.pagetable_reserve Stefano Stabellini
2011-06-07 18:13 ` [PATCH 1/3] x86: calculate precisely the memory needed by init_memory_mapping stefano.stabellini
2011-06-20 22:37 ` H. Peter Anvin
2011-06-21 17:57 ` Stefano Stabellini
2011-06-21 18:02 ` H. Peter Anvin
2011-06-21 20:37 ` [tip:x86/mm] x86, mm: Calculate " tip-bot for Stefano Stabellini
2011-06-07 18:13 ` [PATCH 2/3] Revert "x86,xen: introduce x86_init.mapping.pagetable_reserve" stefano.stabellini
2011-06-21 20:37 ` [tip:x86/mm] " tip-bot for Stefano Stabellini
2011-06-07 18:13 ` [PATCH 3/3] x86: move memblock_x86_reserve_range PGTABLE to find_early_table_space stefano.stabellini
2011-06-21 20:38 ` [tip:x86/mm] x86, init : Move " tip-bot for Stefano Stabellini
[not found] ` <m2n.s.1QU0lc-137774@chiark.greenend.org.uk>
2011-06-17 17:11 ` Ian Jackson [this message]
2011-06-20 19:16 ` [Xen-devel] [PATCH 1/3] x86: calculate precisely the memory needed by init_memory_mapping Stefano Stabellini
2011-06-21 20:58 ` [PATCH 0/3] x86: remove x86_init.mapping.pagetable_reserve Ingo Molnar
2011-06-22 17:16 ` Stefano Stabellini
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