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    SubjectRe: [C/R ARM][PATCH 1/3] ARM: Rudimentary syscall interfaces
    On Sun, Mar 21, 2010 at 09:06:03PM -0400, Christoffer Dall wrote:
    > This small commit introduces a global state of system calls for ARM
    > making it possible for a debugger or checkpointing to gain information
    > about another process' state with respect to system calls.

    I don't particularly like the idea that we always store the syscall
    number to memory for every system call, whether the stored version is
    used or not.

    Since ARM caches are generally not write allocate, this means mostly
    write-only variables can have a higher than expected expense.

    Is there not some thread flag which can be checked to see if we need to
    store the syscall number?


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