qemu/target/mips/cpu-param.h
Richard Henderson 8a669b8aae target/mips: Revert TARGET_PAGE_BITS_VARY
Revert ee3863b9d4 and a08d60bc6c.  The logic behind changing
the system page size because of what the Loongson kernel "prefers"
is flawed.

In the Loongson-2E manual, section 5.5, it is clear that the cpu
supports a 4k page size (along with many others).  Similarly for
the Loongson-3 series CPUs, the 4k page size is mentioned in the
section 7.7 (PageMask Register).  Therefore we must continue to
support a 4k page size.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250328175526.368121-2-richard.henderson@linaro.org>
[PMD: Mention Loongson-3 series CPUs]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit fca2817fdc)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2025-04-05 16:48:28 +03:00

30 lines
580 B
C

/*
* MIPS cpu parameters for qemu.
*
* SPDX-License-Identifier: LGPL-2.0-or-later
*/
#ifndef MIPS_CPU_PARAM_H
#define MIPS_CPU_PARAM_H
#ifdef TARGET_MIPS64
# define TARGET_LONG_BITS 64
#else
# define TARGET_LONG_BITS 32
#endif
#ifdef TARGET_ABI_MIPSN64
#define TARGET_PHYS_ADDR_SPACE_BITS 48
#define TARGET_VIRT_ADDR_SPACE_BITS 48
#else
#define TARGET_PHYS_ADDR_SPACE_BITS 40
# ifdef CONFIG_USER_ONLY
# define TARGET_VIRT_ADDR_SPACE_BITS 31
# else
# define TARGET_VIRT_ADDR_SPACE_BITS 32
#endif
#endif
#define TARGET_PAGE_BITS 12
#define TCG_GUEST_DEFAULT_MO (0)
#endif