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linux-user: Define TASK_UNMAPPED_BASE in $guest/target_mman.h

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Provide default values that are as close as possible to the
values used by the guest's kernel.

Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-08-02 14:29:40 -07:00
parent c8fb5cf97d
commit 2d708164e0
21 changed files with 167 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
linux-user/aarch64/target_mman.h
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@ -4,6 +4,16 @@
#define TARGET_PROT_BTI 0x10
#define TARGET_PROT_MTE 0x20
/*
* arch/arm64/include/asm/processor.h:
*
* TASK_UNMAPPED_BASE DEFAULT_MAP_WINDOW / 4
* DEFAULT_MAP_WINDOW DEFAULT_MAP_WINDOW_64
* DEFAULT_MAP_WINDOW_64 UL(1) << VA_BITS_MIN
* VA_BITS_MIN 48 (unless explicitly configured smaller)
*/
#define TASK_UNMAPPED_BASE (1ull << (48 - 2))
#include "../generic/target_mman.h"
#endif

8
linux-user/alpha/target_mman.h
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@ -20,6 +20,14 @@
#define TARGET_MS_SYNC 2
#define TARGET_MS_INVALIDATE 4
/*
* arch/alpha/include/asm/processor.h:
*
* TASK_UNMAPPED_BASE TASK_SIZE / 2
* TASK_SIZE 0x40000000000UL
*/
#define TASK_UNMAPPED_BASE 0x20000000000ull
#include "../generic/target_mman.h"
#endif

8
linux-user/arm/target_mman.h
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@ -1 +1,9 @@
/*
* arch/arm/include/asm/memory.h
* TASK_UNMAPPED_BASE ALIGN(TASK_SIZE / 3, SZ_16M)
* TASK_SIZE CONFIG_PAGE_OFFSET
* CONFIG_PAGE_OFFSET 0xC0000000 (default in Kconfig)
*/
#define TASK_UNMAPPED_BASE 0x40000000
#include "../generic/target_mman.h"

9
linux-user/cris/target_mman.h
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@ -1 +1,10 @@
/*
* arch/cris/include/asm/processor.h:
* TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
*
* arch/cris/include/arch-v32/arch/processor.h
* TASK_SIZE 0xb0000000
*/
#define TASK_UNMAPPED_BASE TARGET_PAGE_ALIGN(0xb0000000 / 3)
#include "../generic/target_mman.h"

10
linux-user/hexagon/target_mman.h
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@ -1 +1,11 @@
/*
* arch/hexgon/include/asm/processor.h
* TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3)
*
* arch/hexagon/include/asm/mem-layout.h
* TASK_SIZE PAGE_OFFSET
* PAGE_OFFSET 0xc0000000
*/
#define TASK_UNMAPPED_BASE 0x40000000
#include "../generic/target_mman.h"

3
linux-user/hppa/target_mman.h
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@ -24,6 +24,9 @@
#define TARGET_MS_ASYNC 2
#define TARGET_MS_INVALIDATE 4
/* arch/parisc/include/asm/processor.h: DEFAULT_MAP_BASE32 */
#define TASK_UNMAPPED_BASE 0x40000000
#include "../generic/target_mman.h"
#endif

13
linux-user/i386/target_mman.h
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@ -1 +1,14 @@
/*
* arch/x86/include/asm/processor.h:
* TASK_UNMAPPED_BASE __TASK_UNMAPPED_BASE(TASK_SIZE_LOW)
* __TASK_UNMAPPED_BASE(S) PAGE_ALIGN(S / 3)
*
* arch/x86/include/asm/page_32_types.h:
* TASK_SIZE_LOW TASK_SIZE
* TASK_SIZE __PAGE_OFFSET
* __PAGE_OFFSET CONFIG_PAGE_OFFSET
* CONFIG_PAGE_OFFSET 0xc0000000 (default in Kconfig)
*/
#define TASK_UNMAPPED_BASE 0x40000000
#include "../generic/target_mman.h"

8
linux-user/loongarch64/target_mman.h
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@ -1 +1,9 @@
/*
* arch/loongarch/include/asm/processor.h:
* TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3)
* TASK_SIZE64 0x1UL << (... ? VA_BITS : ...)
*/
#define TASK_UNMAPPED_BASE \
TARGET_PAGE_ALIGN((1ull << TARGET_VIRT_ADDR_SPACE_BITS) / 3)
#include "../generic/target_mman.h"

3
linux-user/m68k/target_mman.h
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@ -1 +1,4 @@
/* arch/m68k/include/asm/processor.h */
#define TASK_UNMAPPED_BASE 0xC0000000
#include "../generic/target_mman.h"

8
linux-user/microblaze/target_mman.h
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@ -1 +1,9 @@
/*
* arch/microblaze/include/asm/processor.h:
* TASK_UNMAPPED_BASE (TASK_SIZE / 8 * 3)
* TASK_SIZE CONFIG_KERNEL_START
* CONFIG_KERNEL_START 0xc0000000 (default in Kconfig)
*/
#define TASK_UNMAPPED_BASE 0x48000000
#include "../generic/target_mman.h"

7
linux-user/mips/target_mman.h
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@ -14,6 +14,13 @@
#define TARGET_MAP_STACK 0x40000
#define TARGET_MAP_HUGETLB 0x80000
/*
* arch/mips/include/asm/processor.h:
* TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3)
*/
#define TASK_UNMAPPED_BASE \
TARGET_PAGE_ALIGN((1ull << TARGET_VIRT_ADDR_SPACE_BITS) / 3)
#include "../generic/target_mman.h"
#endif

7
linux-user/nios2/target_mman.h
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@ -1 +1,8 @@
/*
* arch/nios2/include/asm/processor.h:
* TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3)
* TASK_SIZE 0x7FFF0000UL
*/
#define TASK_UNMAPPED_BASE TARGET_PAGE_ALIGN(0x7FFF0000 / 3)
#include "../generic/target_mman.h"

7
linux-user/openrisc/target_mman.h
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@ -1 +1,8 @@
/*
* arch/openrisc/include/asm/processor.h:
* TASK_UNMAPPED_BASE (TASK_SIZE / 8 * 3)
* TASK_SIZE (0x80000000UL)
*/
#define TASK_UNMAPPED_BASE 0x30000000
#include "../generic/target_mman.h"

13
linux-user/ppc/target_mman.h
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@ -4,6 +4,19 @@
#define TARGET_MAP_NORESERVE 0x40
#define TARGET_MAP_LOCKED 0x80
/*
* arch/powerpc/include/asm/task_size_64.h
* TASK_UNMAPPED_BASE_USER32 (PAGE_ALIGN(TASK_SIZE_USER32 / 4))
* TASK_UNMAPPED_BASE_USER64 (PAGE_ALIGN(DEFAULT_MAP_WINDOW_USER64 / 4))
* TASK_SIZE_USER32 (0x0000000100000000UL - (1 * PAGE_SIZE))
* DEFAULT_MAP_WINDOW_USER64 TASK_SIZE_64TB (with 4k pages)
*/
#ifdef TARGET_PPC64
#define TASK_UNMAPPED_BASE 0x0000100000000000ull
#else
#define TASK_UNMAPPED_BASE 0x40000000
#endif
#include "../generic/target_mman.h"
#endif

7
linux-user/riscv/target_mman.h
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@ -1 +1,8 @@
/*
* arch/loongarch/include/asm/processor.h:
* TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3)
*/
#define TASK_UNMAPPED_BASE \
TARGET_PAGE_ALIGN((1ull << (TARGET_VIRT_ADDR_SPACE_BITS - 1)) / 3)
#include "../generic/target_mman.h"

10
linux-user/s390x/target_mman.h
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@ -1 +1,11 @@
/*
* arch/s390/include/asm/processor.h:
* TASK_UNMAPPED_BASE (... : (_REGION2_SIZE >> 1))
*
* arch/s390/include/asm/pgtable.h:
* _REGION2_SIZE (1UL << _REGION2_SHIFT)
* _REGION2_SHIFT 42
*/
#define TASK_UNMAPPED_BASE (1ull << 41)
#include "../generic/target_mman.h"

4
linux-user/sh4/target_mman.h
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@ -1 +1,5 @@
/* arch/sh/include/asm/processor_32.h */
#define TASK_UNMAPPED_BASE \
TARGET_PAGE_ALIGN((1u << TARGET_VIRT_ADDR_SPACE_BITS) / 3)
#include "../generic/target_mman.h"

14
linux-user/sparc/target_mman.h
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@ -5,6 +5,20 @@
#define TARGET_MAP_LOCKED 0x100
#define TARGET_MAP_GROWSDOWN 0x0200
/*
* arch/sparc/include/asm/page_64.h:
* TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \
* _AC(0x0000000070000000,UL) : \
* VA_EXCLUDE_END)
* But VA_EXCLUDE_END is > 0xffff800000000000UL which doesn't work
* in userland emulation.
*/
#ifdef TARGET_ABI32
#define TASK_UNMAPPED_BASE 0x70000000
#else
#define TASK_UNMAPPED_BASE (1ull << (TARGET_VIRT_ADDR_SPACE_BITS - 2))
#endif
#include "../generic/target_mman.h"
#endif

14
linux-user/user-mmap.h
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@ -18,20 +18,6 @@
#ifndef LINUX_USER_USER_MMAP_H
#define LINUX_USER_USER_MMAP_H
#if HOST_LONG_BITS == 64 && TARGET_ABI_BITS == 64
#ifdef TARGET_AARCH64
# define TASK_UNMAPPED_BASE 0x5500000000
#else
# define TASK_UNMAPPED_BASE (1ul << 38)
#endif
#else
#ifdef TARGET_HPPA
# define TASK_UNMAPPED_BASE 0xfa000000
#else
# define TASK_UNMAPPED_BASE 0x40000000
#endif
#endif
/*
* Guest parameters for the ADDR_COMPAT_LAYOUT personality
* (at present this is the only layout supported by QEMU).

12
linux-user/x86_64/target_mman.h
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@ -1 +1,13 @@
/*
* arch/x86/include/asm/processor.h:
* TASK_UNMAPPED_BASE __TASK_UNMAPPED_BASE(TASK_SIZE_LOW)
* __TASK_UNMAPPED_BASE(S) PAGE_ALIGN(S / 3)
*
* arch/x86/include/asm/page_64_types.h:
* TASK_SIZE_LOW DEFAULT_MAP_WINDOW
* DEFAULT_MAP_WINDOW ((1UL << 47) - PAGE_SIZE)
*/
#define TASK_UNMAPPED_BASE \
TARGET_PAGE_ALIGN((1ull << TARGET_VIRT_ADDR_SPACE_BITS) / 3)
#include "../generic/target_mman.h"

6
linux-user/xtensa/target_mman.h
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@ -14,6 +14,12 @@
#define TARGET_MAP_STACK 0x40000
#define TARGET_MAP_HUGETLB 0x80000
/*
* arch/xtensa/include/asm/processor.h:
* TASK_UNMAPPED_BASE (TASK_SIZE / 2)
*/
#define TASK_UNMAPPED_BASE (1u << (TARGET_VIRT_ADDR_SPACE_BITS - 1))
#include "../generic/target_mman.h"
#endif