Messages in this thread Patch in this message | | | Date | Sat, 07 May 2005 00:21:43 +0200 | From | Jakub Jermar <> | Subject | Re: PATCH: acpi_find_rsdp() diverges from ACPI specification |
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Hello,
here I resend corrected patch for acpi_find_rsdp(). Please, apply this patch.
--- linux-2.6.11.7/arch/i386/kernel/acpi/boot.c 2005-04-07 20:58:17.000000000 +0200 +++ linux-2.6.11.7-acpi-patch/arch/i386/kernel/acpi/boot.c 2005-04-29 21:39:08.000000000 +0200 @@ -644,7 +644,7 @@ acpi_find_rsdp (void) */ rsdp_phys = acpi_scan_rsdp (0, 0x400); if (!rsdp_phys) - rsdp_phys = acpi_scan_rsdp (0xE0000, 0xFFFFF); + rsdp_phys = acpi_scan_rsdp (0xE0000, 128*1024);
return rsdp_phys; } Best regards, Jakub
Randy.Dunlap wrote: > On Fri, 29 Apr 2005 23:03:50 +0200 jermar@itbs.cz wrote: > > | Hello, > | > | I found out that acpi_find_rsdp() tries to find the RSDP structure in an area > | bit larger than the ACPI specification wants. The right interval should start > | at 0xe0000 and end at 0xfffff. The search area is thus 128K+1B large. > > The search area is thus 128 KB large, so I agree with the intent of > this patch, except for the +1B. > > > | Given the semantics of acpi_scan_rsdp(), the second argument should therefore be > | the size, not the end address. > > Yes. > > | Should there be any comments, please email me directly as I don't regularily > | read LKM. > | > | Please, apply. > | > | Jakub > | > | --- linux-2.6.11.7/arch/i386/kernel/acpi/boot.c 2005-04-07 20:58:17.000000000 > | +0200 > | +++ linux-2.6.11.7-acpi-patch/arch/i386/kernel/acpi/boot.c 2005-04-29 > | 21:39:08.000000000 +0200 > | @@ -644,7 +644,7 @@ acpi_find_rsdp (void) > | */ > | rsdp_phys = acpi_scan_rsdp (0, 0x400); > | if (!rsdp_phys) > | - rsdp_phys = acpi_scan_rsdp (0xE0000, 0xFFFFF); > | + rsdp_phys = acpi_scan_rsdp (0xE0000, 128*1024 + 1); > Just drop the "+ 1". > > | > | return rsdp_phys; > | } > > > --- > ~Randy - 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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