Re: [PATCH v4 12/12] exec: Fix overlap of PAGE_ANON and PAGE_TARGET_1

[Nathan Chancellor]

On Tue, Apr 06, 2021 at 10:40:31AM -0700, Richard Henderson wrote:
> Unfortuately, the elements of PAGE_* were not in numerical
> order and so PAGE_ANON was added to an "unused" bit.
> As an arbitrary choice, move PAGE_TARGET_{1,2} together.
> 
> Cc: Laurent Vivier <laurent@vivier.eu>
> Fixes: 26bab757d41b ("linux-user: Introduce PAGE_ANON")
> Buglink: https://bugs.launchpad.net/bugs/1922617
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Tested-by: Nathan Chancellor <nathan@kernel.org>

> ---
>  include/exec/cpu-all.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h
> index d76b0b9e02..32cfb634c6 100644
> --- a/include/exec/cpu-all.h
> +++ b/include/exec/cpu-all.h
> @@ -268,8 +268,8 @@ extern intptr_t qemu_host_page_mask;
>  #define PAGE_RESERVED  0x0100
>  #endif
>  /* Target-specific bits that will be used via page_get_flags().  */
> -#define PAGE_TARGET_1  0x0080
> -#define PAGE_TARGET_2  0x0200
> +#define PAGE_TARGET_1  0x0200
> +#define PAGE_TARGET_2  0x0400
>  
>  #if defined(CONFIG_USER_ONLY)
>  void page_dump(FILE *f);
> -- 
> 2.25.1
> 
>