Messages in this thread Patch in this message | | | From | Bjorn Helgaas <> | Subject | [PATCH 3/5] DMI: only ioremap stuff we actually need | Date | Thu, 19 Jan 2006 13:13:17 -0700 |
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dmi_scan_machine() tries to ioremap 0x10000 (64K) bytes, even though it only looks at the first 32 bytes or so. If the SMBIOS table is near the end of a memory region, the ioremap() may fail when it shouldn't.
This is in the efi_enabled path, so it really only affects ia64 at the moment.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Index: work-mm3/arch/i386/kernel/dmi_scan.c =================================================================== --- work-mm3.orig/arch/i386/kernel/dmi_scan.c 2006-01-19 11:26:17.000000000 -0700 +++ work-mm3/arch/i386/kernel/dmi_scan.c 2006-01-19 11:30:21.000000000 -0700 @@ -223,7 +223,7 @@ * needed during early boot. This also means we can * iounmap the space when we're done with it. */ - p = ioremap((unsigned long)efi.smbios, 0x10000); + p = ioremap((unsigned long)efi.smbios, 32); if (p == NULL) goto out; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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