From: guoren@kernel.org
To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de,
gregkh@linuxfoundation.org, hch@lst.de, nathan@kernel.org,
naresh.kamboju@linaro.org
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, x86@kernel.org,
heiko@sntech.de, Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH V12 20/20] riscv: compat: Add COMPAT Kbuild skeletal support
Date: Tue, 5 Apr 2022 15:13:14 +0800 [thread overview]
Message-ID: <20220405071314.3225832-21-guoren@kernel.org> (raw)
In-Reply-To: <20220405071314.3225832-1-guoren@kernel.org>
From: Guo Ren <guoren@linux.alibaba.com>
Adds initial skeletal COMPAT Kbuild (Running 32bit U-mode on
64bit S-mode) support.
- Setup kconfig & dummy functions for compiling.
- Implement compat_start_thread by the way.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
---
arch/riscv/Kconfig | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 00fd9c548f26..def9798e9675 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -76,6 +76,7 @@ config RISCV
select HAVE_ARCH_KGDB if !XIP_KERNEL
select HAVE_ARCH_KGDB_QXFER_PKT
select HAVE_ARCH_MMAP_RND_BITS if MMU
+ select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT && MMU
@@ -127,12 +128,18 @@ config ARCH_MMAP_RND_BITS_MIN
default 18 if 64BIT
default 8
+config ARCH_MMAP_RND_COMPAT_BITS_MIN
+ default 8
+
# max bits determined by the following formula:
# VA_BITS - PAGE_SHIFT - 3
config ARCH_MMAP_RND_BITS_MAX
default 24 if 64BIT # SV39 based
default 17
+config ARCH_MMAP_RND_COMPAT_BITS_MAX
+ default 17
+
# set if we run in machine mode, cleared if we run in supervisor mode
config RISCV_M_MODE
bool
@@ -394,6 +401,18 @@ config CRASH_DUMP
For more details see Documentation/admin-guide/kdump/kdump.rst
+config COMPAT
+ bool "Kernel support for 32-bit U-mode"
+ default 64BIT
+ depends on 64BIT && MMU
+ help
+ This option enables support for a 32-bit U-mode running under a 64-bit
+ kernel at S-mode. riscv32-specific components such as system calls,
+ the user helper functions (vdso), signal rt_frame functions and the
+ ptrace interface are handled appropriately by the kernel.
+
+ If you want to execute 32-bit userspace applications, say Y.
+
endmenu
menu "Boot options"
--
2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: guoren@kernel.org
To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de,
gregkh@linuxfoundation.org, hch@lst.de, nathan@kernel.org,
naresh.kamboju@linaro.org
Cc: linux-arch@vger.kernel.org, linux-s390@vger.kernel.org,
Guo Ren <guoren@linux.alibaba.com>,
heiko@sntech.de, linux-parisc@vger.kernel.org, x86@kernel.org,
linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH V12 20/20] riscv: compat: Add COMPAT Kbuild skeletal support
Date: Tue, 5 Apr 2022 15:13:14 +0800 [thread overview]
Message-ID: <20220405071314.3225832-21-guoren@kernel.org> (raw)
In-Reply-To: <20220405071314.3225832-1-guoren@kernel.org>
From: Guo Ren <guoren@linux.alibaba.com>
Adds initial skeletal COMPAT Kbuild (Running 32bit U-mode on
64bit S-mode) support.
- Setup kconfig & dummy functions for compiling.
- Implement compat_start_thread by the way.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
---
arch/riscv/Kconfig | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 00fd9c548f26..def9798e9675 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -76,6 +76,7 @@ config RISCV
select HAVE_ARCH_KGDB if !XIP_KERNEL
select HAVE_ARCH_KGDB_QXFER_PKT
select HAVE_ARCH_MMAP_RND_BITS if MMU
+ select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT && MMU
@@ -127,12 +128,18 @@ config ARCH_MMAP_RND_BITS_MIN
default 18 if 64BIT
default 8
+config ARCH_MMAP_RND_COMPAT_BITS_MIN
+ default 8
+
# max bits determined by the following formula:
# VA_BITS - PAGE_SHIFT - 3
config ARCH_MMAP_RND_BITS_MAX
default 24 if 64BIT # SV39 based
default 17
+config ARCH_MMAP_RND_COMPAT_BITS_MAX
+ default 17
+
# set if we run in machine mode, cleared if we run in supervisor mode
config RISCV_M_MODE
bool
@@ -394,6 +401,18 @@ config CRASH_DUMP
For more details see Documentation/admin-guide/kdump/kdump.rst
+config COMPAT
+ bool "Kernel support for 32-bit U-mode"
+ default 64BIT
+ depends on 64BIT && MMU
+ help
+ This option enables support for a 32-bit U-mode running under a 64-bit
+ kernel at S-mode. riscv32-specific components such as system calls,
+ the user helper functions (vdso), signal rt_frame functions and the
+ ptrace interface are handled appropriately by the kernel.
+
+ If you want to execute 32-bit userspace applications, say Y.
+
endmenu
menu "Boot options"
--
2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: guoren@kernel.org
To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de,
gregkh@linuxfoundation.org, hch@lst.de, nathan@kernel.org,
naresh.kamboju@linaro.org
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, x86@kernel.org,
heiko@sntech.de, Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH V12 20/20] riscv: compat: Add COMPAT Kbuild skeletal support
Date: Tue, 5 Apr 2022 15:13:14 +0800 [thread overview]
Message-ID: <20220405071314.3225832-21-guoren@kernel.org> (raw)
In-Reply-To: <20220405071314.3225832-1-guoren@kernel.org>
From: Guo Ren <guoren@linux.alibaba.com>
Adds initial skeletal COMPAT Kbuild (Running 32bit U-mode on
64bit S-mode) support.
- Setup kconfig & dummy functions for compiling.
- Implement compat_start_thread by the way.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
---
arch/riscv/Kconfig | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 00fd9c548f26..def9798e9675 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -76,6 +76,7 @@ config RISCV
select HAVE_ARCH_KGDB if !XIP_KERNEL
select HAVE_ARCH_KGDB_QXFER_PKT
select HAVE_ARCH_MMAP_RND_BITS if MMU
+ select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT && MMU
@@ -127,12 +128,18 @@ config ARCH_MMAP_RND_BITS_MIN
default 18 if 64BIT
default 8
+config ARCH_MMAP_RND_COMPAT_BITS_MIN
+ default 8
+
# max bits determined by the following formula:
# VA_BITS - PAGE_SHIFT - 3
config ARCH_MMAP_RND_BITS_MAX
default 24 if 64BIT # SV39 based
default 17
+config ARCH_MMAP_RND_COMPAT_BITS_MAX
+ default 17
+
# set if we run in machine mode, cleared if we run in supervisor mode
config RISCV_M_MODE
bool
@@ -394,6 +401,18 @@ config CRASH_DUMP
For more details see Documentation/admin-guide/kdump/kdump.rst
+config COMPAT
+ bool "Kernel support for 32-bit U-mode"
+ default 64BIT
+ depends on 64BIT && MMU
+ help
+ This option enables support for a 32-bit U-mode running under a 64-bit
+ kernel at S-mode. riscv32-specific components such as system calls,
+ the user helper functions (vdso), signal rt_frame functions and the
+ ptrace interface are handled appropriately by the kernel.
+
+ If you want to execute 32-bit userspace applications, say Y.
+
endmenu
menu "Boot options"
--
2.25.1
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
WARNING: multiple messages have this Message-ID (diff)
From: guoren@kernel.org
To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de,
gregkh@linuxfoundation.org, hch@lst.de, nathan@kernel.org,
naresh.kamboju@linaro.org
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, x86@kernel.org,
heiko@sntech.de, Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH V12 20/20] riscv: compat: Add COMPAT Kbuild skeletal support
Date: Tue, 5 Apr 2022 15:13:14 +0800 [thread overview]
Message-ID: <20220405071314.3225832-21-guoren@kernel.org> (raw)
In-Reply-To: <20220405071314.3225832-1-guoren@kernel.org>
From: Guo Ren <guoren@linux.alibaba.com>
Adds initial skeletal COMPAT Kbuild (Running 32bit U-mode on
64bit S-mode) support.
- Setup kconfig & dummy functions for compiling.
- Implement compat_start_thread by the way.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
---
arch/riscv/Kconfig | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 00fd9c548f26..def9798e9675 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -76,6 +76,7 @@ config RISCV
select HAVE_ARCH_KGDB if !XIP_KERNEL
select HAVE_ARCH_KGDB_QXFER_PKT
select HAVE_ARCH_MMAP_RND_BITS if MMU
+ select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT && MMU
@@ -127,12 +128,18 @@ config ARCH_MMAP_RND_BITS_MIN
default 18 if 64BIT
default 8
+config ARCH_MMAP_RND_COMPAT_BITS_MIN
+ default 8
+
# max bits determined by the following formula:
# VA_BITS - PAGE_SHIFT - 3
config ARCH_MMAP_RND_BITS_MAX
default 24 if 64BIT # SV39 based
default 17
+config ARCH_MMAP_RND_COMPAT_BITS_MAX
+ default 17
+
# set if we run in machine mode, cleared if we run in supervisor mode
config RISCV_M_MODE
bool
@@ -394,6 +401,18 @@ config CRASH_DUMP
For more details see Documentation/admin-guide/kdump/kdump.rst
+config COMPAT
+ bool "Kernel support for 32-bit U-mode"
+ default 64BIT
+ depends on 64BIT && MMU
+ help
+ This option enables support for a 32-bit U-mode running under a 64-bit
+ kernel at S-mode. riscv32-specific components such as system calls,
+ the user helper functions (vdso), signal rt_frame functions and the
+ ptrace interface are handled appropriately by the kernel.
+
+ If you want to execute 32-bit userspace applications, say Y.
+
endmenu
menu "Boot options"
--
2.25.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-04-05 7:17 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-05 7:12 [PATCH V12 00/20] riscv: Add COMPAT mode support for 64BIT guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` [PATCH V12 01/20] uapi: simplify __ARCH_FLOCK{,64}_PAD a little guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` guoren
2022-07-15 3:13 ` Florian Fainelli
2022-07-15 3:13 ` Florian Fainelli
2022-07-15 3:13 ` Florian Fainelli
2022-07-15 3:13 ` Florian Fainelli
2022-04-05 7:12 ` [PATCH V12 02/20] uapi: always define F_GETLK64/F_SETLK64/F_SETLKW64 in fcntl.h guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` guoren
2022-06-08 9:41 ` Eugene Syromiatnikov
2022-06-08 9:41 ` Eugene Syromiatnikov
2022-06-08 9:41 ` Eugene Syromiatnikov
2022-06-08 9:41 ` Eugene Syromiatnikov
2022-06-13 1:15 ` Guo Ren
2022-06-13 1:15 ` Guo Ren
2022-06-13 1:15 ` Guo Ren
2022-06-13 1:15 ` Guo Ren
2022-04-05 7:12 ` [PATCH V12 03/20] compat: consolidate the compat_flock{, 64} definition guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` [PATCH V12 03/20] compat: consolidate the compat_flock{,64} definition guoren
2022-04-05 7:12 ` [PATCH V12 04/20] arch: Add SYSVIPC_COMPAT for all architectures guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` [PATCH V12 05/20] fs: stat: compat: Add __ARCH_WANT_COMPAT_STAT guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:12 ` guoren
2022-04-05 7:13 ` [PATCH V12 06/20] asm-generic: compat: Cleanup duplicate definitions guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 07/20] syscalls: compat: Fix the missing part for __SYSCALL_COMPAT guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 08/20] riscv: Fixup difference with defconfig guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 09/20] riscv: compat: Add basic compat data type implementation guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 10/20] riscv: compat: Support TASK_SIZE for compat mode guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 11/20] riscv: compat: syscall: Add compat_sys_call_table implementation guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 12/20] riscv: compat: syscall: Add entry.S implementation guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 13/20] riscv: compat: process: Add UXL_32 support in start_thread guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 14/20] riscv: compat: Add elf.h implementation guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 15/20] riscv: compat: Add hw capability check for elf guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 16/20] riscv: compat: vdso: Add COMPAT_VDSO base code implementation guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 17/20] riscv: compat: vdso: Add setup additional pages implementation guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 18/20] riscv: compat: signal: Add rt_frame implementation guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` [PATCH V12 19/20] riscv: compat: ptrace: Add compat_arch_ptrace implement guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren [this message]
2022-04-05 7:13 ` [PATCH V12 20/20] riscv: compat: Add COMPAT Kbuild skeletal support guoren
2022-04-05 7:13 ` guoren
2022-04-05 7:13 ` guoren
2022-04-28 12:25 ` [PATCH V12 00/20] riscv: Add COMPAT mode support for 64BIT Guo Ren
2022-04-28 12:25 ` Guo Ren
2022-04-28 12:25 ` Guo Ren
2022-04-28 12:25 ` Guo Ren
2022-04-28 18:22 ` Palmer Dabbelt
2022-04-28 18:22 ` Palmer Dabbelt
2022-04-28 18:22 ` Palmer Dabbelt
2022-04-28 18:22 ` Palmer Dabbelt
2022-04-30 5:43 ` Guo Ren
2022-04-30 5:43 ` Guo Ren
2022-04-30 5:43 ` Guo Ren
2022-04-30 5:43 ` Guo Ren
2022-05-19 17:50 ` Palmer Dabbelt
2022-05-19 17:50 ` Palmer Dabbelt
2022-05-19 17:50 ` Palmer Dabbelt
2022-05-19 17:50 ` Palmer Dabbelt
2022-05-20 18:18 ` Guo Ren
2022-05-20 18:18 ` Guo Ren
2022-05-20 18:18 ` Guo Ren
2022-05-20 18:18 ` Guo Ren
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