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mirror of https://git.FreeBSD.org/src.git synced 2024-12-27 11:55:06 +00:00
freebsd/sys/ia64
Marcel Moolenaar 1a4fcaebe3 o Introduce vm_sync_icache() for making the I-cache coherent with
the memory or D-cache, depending on the semantics of the platform.
    vm_sync_icache() is basically a wrapper around pmap_sync_icache(),
    that translates the vm_map_t argumument to pmap_t.
o   Introduce pmap_sync_icache() to all PMAP implementation. For powerpc
    it replaces the pmap_page_executable() function, added to solve
    the I-cache problem in uiomove_fromphys().
o   In proc_rwmem() call vm_sync_icache() when writing to a page that
    has execute permissions. This assures that when breakpoints are
    written, the I-cache will be coherent and the process will actually
    hit the breakpoint.
o   This also fixes the Book-E PMAP implementation that was missing
    necessary locking while trying to deal with the I-cache coherency
    in pmap_enter() (read: mmu_booke_enter_locked).

The key property of this change is that the I-cache is made coherent
*after* writes have been done. Doing it in the PMAP layer when adding
or changing a mapping means that the I-cache is made coherent *before*
any writes happen. The difference is key when the I-cache prefetches.
2009-10-21 18:38:02 +00:00
..
acpica Import ACPICA 20090521. 2009-06-05 18:44:36 +00:00
compile
conf Enable POSIX semaphores on all non-embedded architectures by default. 2009-07-02 18:24:37 +00:00
disasm
ia32 Add trivial implementation for the freebsd32_sysarch on ia64. 2009-04-01 19:23:07 +00:00
ia64 o Introduce vm_sync_icache() for making the I-cache coherent with 2009-10-21 18:38:02 +00:00
include o Align function on a 32-byte boundary so that the core's front-end 2009-10-21 18:09:48 +00:00
isa Remove isa_irq_pending(). It's not used. 2009-04-24 03:43:20 +00:00
pci