Re: [PATCH 29/30] tools/testing/vma: default VMA flag bits to 64-bit

Pedro Falcato <[email protected]> Thu, 2 Jul 2026 12:44:21 +0100

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Message-ID	<[email protected]>

On Mon, Jun 29, 2026 at 01:23:40PM +0100, Lorenzo Stoakes wrote:
> With all of the sanitisers turned on, setting the VMA flag bits depth to
> 128 by default results in overly long build times.
> 
> Reduce this to 64 - we can always manipulate these later for testing of
> larger bitmaps as needed.
> 

Hmm, what's the problem with the sanitizers? Shouldn't this just result in
slightly different codegen?

> Signed-off-by: Lorenzo Stoakes <[email protected]>
> ---
>  tools/testing/vma/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/vma/Makefile b/tools/testing/vma/Makefile
> index e72b45dedda5..ef6cc558afe1 100644
> --- a/tools/testing/vma/Makefile
> +++ b/tools/testing/vma/Makefile
> @@ -10,7 +10,7 @@ OFILES = $(SHARED_OFILES) main.o shared.o maple-shim.o
>  TARGETS = vma
>  
>  # These can be varied to test different sizes.
> -CFLAGS += -DNUM_VMA_FLAG_BITS=128 -DNUM_MM_FLAG_BITS=128
> +CFLAGS += -DNUM_VMA_FLAG_BITS=64 -DNUM_MM_FLAG_BITS=64
>  
>  main.o: main.c shared.c shared.h vma_internal.h tests/merge.c tests/mmap.c tests/vma.c ../../../mm/vma.c ../../../mm/vma_init.c ../../../mm/vma_exec.c ../../../mm/vma.h include/custom.h include/dup.h include/stubs.h
>  
> -- 
> 2.54.0
> 

-- 
Pedro