On Friday 09 January 2009 07:35:33 Len Brown wrote:
> applied
>
> --
> Len Brown, Intel Open Source Technology Center
>
> On Wed, 17 Dec 2008, Zhao Yakui wrote:
> > From: Zhao Yakui <yakui.zhao@xxxxxxxxx>
> >
> > On some boxes there exist both RSDT and XSDT table. But unfortunately
> > sometimes there exists the following error when XSDT table is used:
> > a. 32/64X address mismatch
> > b. The 32/64X FACS address mismatch
> >
> > In such case the boot option of "acpi=rsdt" is provided so that
> > RSDT is tried instead of XSDT table when the system can't work well.
Great, now we still need a dmi blacklist with machines which are known
broken. Then we are at the patchset I posted about a year ago -> scnr.
I am going to post the missing two patches to make R40e and R50e work.
Thanks,
Thomas
> >
> > http://bugzilla.kernel.org/show_bug.cgi?id=8246
> >
> > Signed-off-by: Zhao Yakui <yakui.zhao@xxxxxxxxx>
> > cc:Thomas Renninger <trenn@xxxxxxx>
> > ---
> > Documentation/kernel-parameters.txt | 2 ++
> > arch/ia64/kernel/acpi.c | 1 +
> > arch/x86/kernel/acpi/boot.c | 6 +++++-
> > drivers/acpi/tables/tbutils.c | 3 ++-
> > include/acpi/acpixf.h | 1 +
> > 5 files changed, 11 insertions(+), 2 deletions(-)
> >
> > Index: linux-2.6/arch/x86/kernel/acpi/boot.c
> > ===================================================================
> > --- linux-2.6.orig/arch/x86/kernel/acpi/boot.c
> > +++ linux-2.6/arch/x86/kernel/acpi/boot.c
> > @@ -47,7 +47,7 @@
> > #endif
> >
> > static int __initdata acpi_force = 0;
> > -
> > +u32 acpi_rsdt_forced;
> > #ifdef CONFIG_ACPI
> > int acpi_disabled = 0;
> > #else
> > @@ -1783,6 +1783,10 @@ static int __init parse_acpi(char *arg)
> > disable_acpi();
> > acpi_ht = 1;
> > }
> > + /* acpi=rsdt use RSDT instead of XSDT */
> > + else if (strcmp(arg, "rsdt") == 0) {
> > + acpi_rsdt_forced = 1;
> > + }
> > /* "acpi=noirq" disables ACPI interrupt routing */
> > else if (strcmp(arg, "noirq") == 0) {
> > acpi_noirq_set();
> > Index: linux-2.6/include/acpi/acpixf.h
> > ===================================================================
> > --- linux-2.6.orig/include/acpi/acpixf.h
> > +++ linux-2.6/include/acpi/acpixf.h
> > @@ -48,6 +48,7 @@
> > #include "actypes.h"
> > #include "actbl.h"
> >
> > +extern u32 acpi_rsdt_forced;
> > /*
> > * Global interfaces
> > */
> > Index: linux-2.6/drivers/acpi/tables/tbutils.c
> > ===================================================================
> > --- linux-2.6.orig/drivers/acpi/tables/tbutils.c
> > +++ linux-2.6/drivers/acpi/tables/tbutils.c
> > @@ -420,7 +420,8 @@ acpi_tb_parse_root_table(acpi_physical_a
> >
> > /* Differentiate between RSDT and XSDT root tables */
> >
> > - if (rsdp->revision > 1 && rsdp->xsdt_physical_address) {
> > + if (rsdp->revision > 1 && rsdp->xsdt_physical_address
> > + && !acpi_rsdt_forced) {
> > /*
> > * Root table is an XSDT (64-bit physical addresses). We must use the
> > * XSDT if the revision is > 1 and the XSDT pointer is present, as per
> > Index: linux-2.6/arch/ia64/kernel/acpi.c
> > ===================================================================
> > --- linux-2.6.orig/arch/ia64/kernel/acpi.c
> > +++ linux-2.6/arch/ia64/kernel/acpi.c
> > @@ -65,6 +65,7 @@ EXPORT_SYMBOL(pm_idle);
> > void (*pm_power_off) (void);
> > EXPORT_SYMBOL(pm_power_off);
> >
> > +u32 acpi_rsdt_forced;
> > unsigned int acpi_cpei_override;
> > unsigned int acpi_cpei_phys_cpuid;
> >
> > Index: linux-2.6/Documentation/kernel-parameters.txt
> > ===================================================================
> > --- linux-2.6.orig/Documentation/kernel-parameters.txt
> > +++ linux-2.6/Documentation/kernel-parameters.txt
> > @@ -139,6 +139,8 @@ and is between 256 and 4096 characters.
> > ht -- run only enough ACPI to enable Hyper Threading
> > strict -- Be less tolerant of platforms that are not
> > strictly ACPI specification compliant.
> > + rsdt -- RSDT is used instead of XSDT table when both
> > + exits.
> >
> > See also Documentation/power/pm.txt, pci=noacpi
> >
> >
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
> > the body of a message to majordomo@xxxxxxxxxxxxxxx
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
