linux-kernel - Re: [PATCH] x86/pci: fix dmar_tbl early

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Message-ID: <86802c440809242348g10939ca2p79b5bd1ce7e5fac0@mail.gmail.com>
Date:	Wed, 24 Sep 2008 23:48:31 -0700
From:	"Yinghai Lu" <yinghai@...nel.org>
To:	"Suresh Siddha" <suresh.b.siddha@...el.com>,
	"Jesse Barnes" <jbarnes@...tuousgeek.org>,
	"Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	"Yinghai Lu" <yhlu.kernel@...il.com>
Subject: Re: [PATCH] x86/pci: fix dmar_tbl early_ioremap leak

On Wed, Sep 24, 2008 at 11:27 PM, Yinghai Lu <yhlu.kernel@...il.com> wrote:
> use early_acpi_os_unmap_memory
>
> Signed-off-by: Yinghai Lu <yhlu.kernel@...il.com>
>
> ---
>  drivers/pci/dmar.c |    9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
>
> Index: linux-2.6/drivers/pci/dmar.c
> ===================================================================
> --- linux-2.6.orig/drivers/pci/dmar.c
> +++ linux-2.6/drivers/pci/dmar.c
> @@ -42,6 +42,7 @@
>  LIST_HEAD(dmar_drhd_units);
>
>  static struct acpi_table_header * __initdata dmar_tbl;
> +static acpi_size __initdata dmar_tbl_size;
>
>  static void __init dmar_register_drhd_unit(struct dmar_drhd_unit *drhd)
>  {
> @@ -296,9 +297,13 @@ static int __init dmar_table_detect(void
>  {
>        acpi_status status = AE_OK;
>
> +       if (dmar_tbl)
> +               early_acpi_os_unmap_memory(dmar_tbl, dmar_tbl_size);
> +

need more work..

YH
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