On 12/08/2017 08:57 AM, Peter Maydell wrote: > SPARC Linux has an oddity that it insists that mmap() > of MAP_FIXED memory must be at an alignment defined by > SHMLBA, which is more aligned than the page size > (typically, SHMLBA alignment is to 16K, and pages are 8K). > This is a relic of ancient hardware that had cache > aliasing constraints, but even on modern hardware the > kernel still insists on the alignment. > > To ensure that we get mmap() alignment sufficient to > make the kernel happy, change QEMU_VMALLOC_ALIGN, > qemu_fd_getpagesize() and qemu_mempath_getpagesize() > to use the maximum of getpagesize() and SHMLBA. > > In particular, this allows 'make check' to pass on Sparc: > we were previously failing the ivshmem tests. > > Signed-off-by: Peter Maydell <peter.mayd...@linaro.org> > ---
Reviewed-by: Richard Henderson <richard.hender...@linaro.org> r~
