mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
4c54f5bc8e
qemu/target/alpha/cpu-param.h

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

31 lines
775 B
C
Raw Normal View History

tcg: Split out target/arch/cpu-param.h For all targets, into this new file move TARGET_LONG_BITS, TARGET_PAGE_BITS, TARGET_PHYS_ADDR_SPACE_BITS, TARGET_VIRT_ADDR_SPACE_BITS, and NB_MMU_MODES. Include this new file from exec/cpu-defs.h. This now removes the somewhat odd requirement that target/arch/cpu.h defines TARGET_LONG_BITS before including exec/cpu-defs.h, so push the bulk of the includes within target/arch/cpu.h to the top. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-22 21:51:19 +03:00
/*
* Alpha cpu parameters for qemu.
*
* Copyright (c) 2007 Jocelyn Mayer
* SPDX-License-Identifier: LGPL-2.0+
*/
#ifndef ALPHA_CPU_PARAM_H
Normalize header guard symbol definition We commonly define the header guard symbol without an explicit value. Normalize the exceptions. Done with scripts/clean-header-guards.pl. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20220506134911.2856099-4-armbru@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-05-06 16:49:10 +03:00
#define ALPHA_CPU_PARAM_H
tcg: Split out target/arch/cpu-param.h For all targets, into this new file move TARGET_LONG_BITS, TARGET_PAGE_BITS, TARGET_PHYS_ADDR_SPACE_BITS, TARGET_VIRT_ADDR_SPACE_BITS, and NB_MMU_MODES. Include this new file from exec/cpu-defs.h. This now removes the somewhat odd requirement that target/arch/cpu.h defines TARGET_LONG_BITS before including exec/cpu-defs.h, so push the bulk of the includes within target/arch/cpu.h to the top. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-22 21:51:19 +03:00
#define TARGET_LONG_BITS 64
accel/tcg: Relax va restrictions on 64-bit guests We cannot at present limit a 64-bit guest to a virtual address space smaller than the host. It will mostly work to ignore this limitation, except if the guest uses high bits of the address space for tags. But it will certainly work better, as presently we can wind up failing to allocate the guest stack. Widen our user-only page tree to the host or abi pointer width. Remove the workaround for this problem from target/alpha. Always validate guest addresses vs reserved_va, as there we control allocation ourselves. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20200513175134.19619-7-alex.bennee@linaro.org>
2020-05-13 20:51:30 +03:00
tcg: Split out target/arch/cpu-param.h For all targets, into this new file move TARGET_LONG_BITS, TARGET_PAGE_BITS, TARGET_PHYS_ADDR_SPACE_BITS, TARGET_VIRT_ADDR_SPACE_BITS, and NB_MMU_MODES. Include this new file from exec/cpu-defs.h. This now removes the somewhat odd requirement that target/arch/cpu.h defines TARGET_LONG_BITS before including exec/cpu-defs.h, so push the bulk of the includes within target/arch/cpu.h to the top. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-22 21:51:19 +03:00
/* ??? EV4 has 34 phys addr bits, EV5 has 40, EV6 has 44. */
#define TARGET_PHYS_ADDR_SPACE_BITS 44
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>
2024-01-02 04:58:08 +03:00
#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
accel/tcg: Relax va restrictions on 64-bit guests We cannot at present limit a 64-bit guest to a virtual address space smaller than the host. It will mostly work to ignore this limitation, except if the guest uses high bits of the address space for tags. But it will certainly work better, as presently we can wind up failing to allocate the guest stack. Widen our user-only page tree to the host or abi pointer width. Remove the workaround for this problem from target/alpha. Always validate guest addresses vs reserved_va, as there we control allocation ourselves. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20200513175134.19619-7-alex.bennee@linaro.org>
2020-05-13 20:51:30 +03:00
tcg: Split out target/arch/cpu-param.h For all targets, into this new file move TARGET_LONG_BITS, TARGET_PAGE_BITS, TARGET_PHYS_ADDR_SPACE_BITS, TARGET_VIRT_ADDR_SPACE_BITS, and NB_MMU_MODES. Include this new file from exec/cpu-defs.h. This now removes the somewhat odd requirement that target/arch/cpu.h defines TARGET_LONG_BITS before including exec/cpu-defs.h, so push the bulk of the includes within target/arch/cpu.h to the top. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-22 21:51:19 +03:00
#endif
Reference in New Issue Copy Permalink