From: Suresh Siddha <suresh.b.siddha@intel.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"Siddha, Suresh B" <suresh.b.siddha@intel.com>,
Jeremy Fitzhardinge <jeremy@goop.org>,
Andrew Morton <akpm@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86: keep the page count correct
Date: Mon, 27 Oct 2008 09:50:28 -0700 [thread overview]
Message-ID: <20081027165028.GB30573@linux-os.sc.intel.com> (raw)
In-Reply-To: <490406FD.30604@kernel.org>
On Sat, Oct 25, 2008 at 10:58:21PM -0700, Yinghai Lu wrote:
>
> impact: get correct page count for 2M and 1G...
>
> found page count in /proc/meminfo is nor correct on 1G system in VirtualBox 2.0.4
>
> # cat /proc/meminfo
> MemTotal: 1017508 kB
> MemFree: 822700 kB
> Buffers: 1456 kB
> Cached: 26632 kB
> SwapCached: 0 kB
> ...
> Hugepagesize: 2048 kB
> DirectMap4k: 4032 kB
> DirectMap2M: 18446744073709549568 kB
>
> with this patch get:
> ...
> DirectMap4k: 4032 kB
> DirectMap2M: 1044480 kB
>
> which is consistent to kernel_page_tables
> ---[ Low Kernel Mapping ]---
> 0xffff880000000000-0xffff880000001000 4K RW PCD GLB x pte
> 0xffff880000001000-0xffff88000009f000 632K RW GLB x pte
> 0xffff88000009f000-0xffff8800000a0000 4K RW PCD GLB x pte
> 0xffff8800000a0000-0xffff880000200000 1408K RW GLB x pte
> 0xffff880000200000-0xffff88003fe00000 1020M RW PSE GLB x pmd
> 0xffff88003fe00000-0xffff88003fff0000 1984K RW GLB NX pte
> 0xffff88003fff0000-0xffff880040000000 64K pte
> 0xffff880040000000-0xffff888000000000 511G pud
> 0xffff888000000000-0xffffc20000000000 58880G pgd
>
> Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
next prev parent reply other threads:[~2008-10-27 16:50 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-26 5:58 [PATCH] x86: keep the page count correct Yinghai Lu
2008-10-27 16:50 ` Suresh Siddha [this message]
2008-10-27 17:55 ` Ingo Molnar
2008-10-28 1:52 ` [PATCH] x86: fix init_memory_mapping for [dc000000 - e0000000) Yinghai Lu
2008-10-28 9:27 ` Ingo Molnar
2008-10-28 17:48 ` Cyrill Gorcunov
2008-10-28 18:10 ` Ingo Molnar
2008-10-28 18:14 ` Cyrill Gorcunov
2008-10-28 18:18 ` Ingo Molnar
2008-10-28 18:22 ` Cyrill Gorcunov
[not found] ` <20081028093930.GA9699@elte.hu>
[not found] ` <20081028094758.GA11958@elte.hu>
[not found] ` <4906E048.6060006@kernel.org>
[not found] ` <20081028095244.GY15734@elte.hu>
2008-10-28 19:39 ` [PATCH] x86: fix init_memory_mapping for [dc000000 - e0000000) - v2 Yinghai Lu
2008-10-28 19:55 ` Ingo Molnar
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