am 8e0e372a: Set PROT_EXEC on the whole pixelflinger code cache.

    long pagemask = ~(pagesize - 1);  // assumes pagesize is a power of 2

    uint32_t* pageStart = (uint32_t*) (((uintptr_t) mBase) & pagemask);

    size_t adjustedLength = mBase - pageStart + mSize;

    size_t adjustedLength = (mBase - pageStart) * sizeof(uint32_t) + mSize;

    if (mBase && mprotect(pageStart, adjustedLength, PROT_READ | PROT_WRITE | PROT_EXEC) != 0) {

        mspace_free(getMspace(), mBase);