Revision 9e3a9d1ed8cc8db93e5c53e9a5b09065bd95de8b authored by Len Brown on 06 February 2009, 19:00:56 UTC, committed by Len Brown on 06 February 2009, 19:00:56 UTC
When ACPI is disabled in the BIOS of this VIA C3 box, it invalidates the RSDP, which Linux notices: ACPI Error (tbxfroot-0218): A valid RSDP was not found [20080926] Bug Linux neglected to disable ACPI at that stage, and later scribbled on smp_found_config: ACPI: No APIC-table, disabling MPS But this box doesn't run well in legacy PIC mode, it needed IOAPIC mode to perform correctly: http://lkml.org/lkml/2009/2/5/39 So exit ACPI mode cleanly when we first detect that it is hopeless. Signed-off-by: Len Brown <len.brown@intel.com>
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shm.h
#ifndef _M68K_SHM_H
#define _M68K_SHM_H
/* format of page table entries that correspond to shared memory pages
currently out in swap space (see also mm/swap.c):
bits 0-1 (PAGE_PRESENT) is = 0
bits 8..2 (SWP_TYPE) are = SHM_SWP_TYPE
bits 31..9 are used like this:
bits 15..9 (SHM_ID) the id of the shared memory segment
bits 30..16 (SHM_IDX) the index of the page within the shared memory segment
(actually only bits 25..16 get used since SHMMAX is so low)
bit 31 (SHM_READ_ONLY) flag whether the page belongs to a read-only attach
*/
/* on the m68k both bits 0 and 1 must be zero */
/* format on the sun3 is similar, but bits 30, 31 are set to zero and all
others are reduced by 2. --m */
#ifndef CONFIG_SUN3
#define SHM_ID_SHIFT 9
#else
#define SHM_ID_SHIFT 7
#endif
#define _SHM_ID_BITS 7
#define SHM_ID_MASK ((1<<_SHM_ID_BITS)-1)
#define SHM_IDX_SHIFT (SHM_ID_SHIFT+_SHM_ID_BITS)
#define _SHM_IDX_BITS 15
#define SHM_IDX_MASK ((1<<_SHM_IDX_BITS)-1)
#endif /* _M68K_SHM_H */
![swh spinner](/static/img/swh-spinner.gif)
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