[SCM] GNU Mach branch, master, updated. v1.4-504-g1bb1ba6

[Justus Winter]

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- Log -----------------------------------------------------------------
commit 1bb1ba65cb9efceeb20b4296f903f3fe58b3341e
Author: Justus Winter <address@hidden>
Date:   Tue Dec 16 14:21:26 2014 +0100

    ipc: guard test code with `MACH_IPC_TEST'
    
    * ipc/ipc_kmsg.h (ikm_mark_bogus): New macro.
    (ipc_kmsg_rmqueue_first_macro): Use `ikm_mark_bogus'.
    * ipc/ipc_kmsg.c (ipc_kmsg_rmqueue): Likewise.

commit 73314404a9bd7106514b711cd69765b4081b6bed
Author: Justus Winter <address@hidden>
Date:   Tue Dec 16 13:36:08 2014 +0100

    ipc: tune size of cached kernel message buffers
    
    The previous limit was 256 bytes.  That seems a little crummy by
    todays standards, and we are frequently sending bigger packets
    (e.g. every RPC containing a string_t on Hurd).
    
    Use the page size for IKM_SAVED_KMSG_SIZE to make sure the page is
    pinned to a single processor.
    
    * ipc/ipc_kmsg.h (IKM_SAVED_KMSG_SIZE): Define to `PAGE_SIZE'.

-----------------------------------------------------------------------

Summary of changes:
 ipc/ipc_kmsg.c |    4 +---
 ipc/ipc_kmsg.h |   24 +++++++++++++++++++-----
 2 files changed, 20 insertions(+), 8 deletions(-)


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