diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2024-01-02 12:58:08 +1100 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2024-02-29 11:35:37 -1000 |
| commit | f2ffdfab7e5ae5217567508bb74c329e3b19dd44 (patch) | |
| tree | f65af359553f759acba0a352c4b64dc0314b82de /target/alpha | |
| parent | 835e5fe9e2e1ccd259474a9eb5f5063497e4e4ab (diff) | |
target/alpha: Enable TARGET_PAGE_BITS_VARY for user-only
Since alpha binaries are generally built for multiple
page sizes, it is trivial to allow the page size to vary.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-34-richard.henderson@linaro.org>
Diffstat (limited to 'target/alpha')
| -rw-r--r-- | target/alpha/cpu-param.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/target/alpha/cpu-param.h b/target/alpha/cpu-param.h index 68c46f7998..c969cb016b 100644 --- a/target/alpha/cpu-param.h +++ b/target/alpha/cpu-param.h @@ -9,10 +9,22 @@ #define ALPHA_CPU_PARAM_H #define TARGET_LONG_BITS 64 -#define TARGET_PAGE_BITS 13 /* ??? EV4 has 34 phys addr bits, EV5 has 40, EV6 has 44. */ #define TARGET_PHYS_ADDR_SPACE_BITS 44 -#define TARGET_VIRT_ADDR_SPACE_BITS (30 + TARGET_PAGE_BITS) + +#ifdef CONFIG_USER_ONLY +/* + * Allow user-only to vary page size. Real hardware allows only 8k and 64k, + * but since any variance means guests cannot assume a fixed value, allow + * a 4k minimum to match x86 host, which can minimize emulation issues. + */ +# define TARGET_PAGE_BITS_VARY +# define TARGET_PAGE_BITS_MIN 12 +# define TARGET_VIRT_ADDR_SPACE_BITS 63 +#else +# define TARGET_PAGE_BITS 13 +# define TARGET_VIRT_ADDR_SPACE_BITS (30 + TARGET_PAGE_BITS) +#endif #endif |