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target/alpha: Enable TARGET_PAGE_BITS_VARY for user-only

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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>
This commit is contained in:
Richard Henderson 2024-01-02 12:58:08 +11:00
parent 835e5fe9e2
commit f2ffdfab7e
1 changed files with 14 additions and 2 deletions
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16
target/alpha/cpu-param.h
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@ -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