On Sat, 29 Jan 2022 08:16:04 +0100
Christophe JAILLET christophe.jail...@wanadoo.fr wrote:
>The error handling path of mpc52xx_lpbfifo_probe() and a request_irq() is
>not balanced by a corresponding free_irq().
>
>Add the missing call, as already done in the remove function.
>
>Fixes: 3c9059d79f5e
On Sat, 22 Jan 2022 09:04:29 +0530, Athira Rajeev wrote:
> Running selftest with CONFIG_PPC_IRQ_SOFT_MASK_DEBUG enabled in kernel
> triggered below warning:
>
> [ 172.851380] [ cut here ]
> [ 172.851391] WARNING: CPU: 8 PID: 2901 at
> arch/powerpc/include/asm/hw_irq.h:24
On Mon, 6 Dec 2021 11:11:51 +, Christophe Leroy wrote:
> Unmapping a fixmap entry is done by calling __set_fixmap()
> with FIXMAP_PAGE_CLEAR as flags.
>
> Today, powerpc __set_fixmap() calls map_kernel_page().
>
> map_kernel_page() is not happy when called a second time
> for the same page.
>
On Tue, 25 Jan 2022 00:39:28 +1000, Nicholas Piggin wrote:
> The decrementer exception can fail to be cleared when the interrupt
> returns in the case where the decrementer wraps with the next timer
> still beyond decrementer_max. This results in a decrementer interrupt
> storm. This is triggerable
On Sat, 22 Jan 2022 20:55:30 +1000, Nicholas Piggin wrote:
> The L0 is storing HFSCR requested by the L1 for the L2 in struct
> kvm_nested_guest when the L1 requests a vCPU enter L2. kvm_nested_guest
> is not a per-vCPU structure. Hilarity ensues.
>
> Fix it by moving the nested hfscr into the vCP
From: Guo Ren
Currently, most 64-bit architectures (x86, parisc, powerpc, arm64,
s390, mips, sparc) have supported COMPAT mode. But they all have
history issues and can't use standard linux unistd.h. RISC-V would
be first standard __SYSCALL_COMPAT user of include/uapi/asm-generic
/unistd.h.
The
From: Guo Ren
The existing per-arch definitions are pretty much historic cruft.
Move SYSVIPC_COMPAT into init/Kconfig.
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Acked-by: Arnd Bergmann
Cc: Christoph Hellwig
Cc: Palmer Dabbelt
---
arch/arm64/Kconfig | 4
arch/mips/Kconfig| 5
From: Guo Ren
RISC-V doesn't neeed compat_stat, so using __ARCH_WANT_COMPAT_STAT
to exclude unnecessary SYSCALL functions.
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Reviewed-by: Arnd Bergmann
Cc: Palmer Dabbelt
---
arch/arm64/include/asm/unistd.h | 1 +
arch/mips/include/asm/unistd.h
From: Guo Ren
There are 7 64bit architectures that support Linux COMPAT mode to
run 32bit applications. A lot of definitions are duplicate:
- COMPAT_USER_HZ
- COMPAT_RLIM_INFINITY
- COMPAT_OFF_T_MAX
- __compat_uid_t, __compat_uid_t
- compat_dev_t
- compat_ipc_pid_t
- struct compat_flock
-
From: Guo Ren
Make "uapi asm unistd.h" could be used for architectures' COMPAT
mode. The __SYSCALL_COMPAT is first used in riscv.
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Reviewed-by: Arnd Bergmann
---
include/uapi/asm-generic/unistd.h | 4 ++--
tools/include/uapi/asm-generic/unis
From: Guo Ren
Let's follow the origin patch's spirit:
The only difference between rv32_defconfig and defconfig is that
rv32_defconfig has CONFIG_ARCH_RV32I=y.
This is helpful to compare rv64-compat-rv32 v.s. rv32-linux.
Fixes: 1b937e8faa87ccfb ("RISC-V: Add separate defconfig for 32bit system
From: Guo Ren
Implement asm/compat.h for struct compat_xxx, RLIM_INFINITY,
OFF_T_MAX, is_compat_task, compat_user_regset, regset convert.
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
arch/riscv/include/asm/compat.h | 135 +++
arch/riscv/inc
From: Guo Ren
Make TASK_SIZE from const to dynamic detect TIF_32BIT flag
function. Refer to arm64 to implement DEFAULT_MAP_WINDOW_64 for
efi-stub.
Limit 32-bit compatible process in 0-2GB virtual address range
(which is enough for real scenarios), because it could avoid
address sign extend probl
From: Guo Ren
Implement compat sys_call_table and some system call functions:
truncate64, ftruncate64, fallocate, pread64, pwrite64,
sync_file_range, readahead, fadvise64_64 which need argument
translation.
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
arch/riscv/includ
From: Guo Ren
Implement the entry of compat_sys_call_table[] in asm. Ref to
riscv-privileged spec 4.1.1 Supervisor Status Register (sstatus):
BIT[32:33] = UXL[1:0]:
- 1:32
- 2:64
- 3:128
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
arch/riscv/include/asm/csr.h |
From: Guo Ren
If the current task is in COMPAT mode, set SR_UXL_32 in status for
returning userspace. We need CONFIG _COMPAT to prevent compiling
errors with rv32 defconfig.
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
Cc: Palmer Dabbelt
---
arch/riscv/kernel/process.c |
From: Guo Ren
Implement necessary type and macro for compat elf. See the code
comment for detail.
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Reviewed-by: Arnd Bergmann
---
arch/riscv/include/asm/elf.h | 48 +++-
1 file changed, 47 insertions(+), 1 deletion(
From: Guo Ren
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future
From: Guo Ren
Reconstruct __setup_additional_pages() by appending vdso info
pointer argument to meet compat_vdso_info requirement. And change
vm_special_mapping *dm, *cm initialization into static.
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
Cc: Palmer Dabbelt
---
arch/r
From: Guo Ren
Implement compat_setup_rt_frame for sigcontext save & restore. The
main process is the same with signal, but the rv32 pt_regs' size
is different from rv64's, so we needs convert them.
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
Cc: Palmer Dabbelt
---
arch/r
From: Guo Ren
Now, you can use native gdb on riscv64 for rv32 app debugging.
$ uname -a
Linux buildroot 5.16.0-rc4-00036-gbef6b82fdf23-dirty #53 SMP Mon Dec 20
23:06:53 CST 2021 riscv64 GNU/Linux
$ cat /proc/cpuinfo
processor : 0
hart: 0
isa : rv64imafdcsuh
mmu
From: Guo Ren
Adds initial skeletal COMPAT Kbuild (Runing 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
Signed-off-by: Guo Ren
Reviewed-by: Arnd Bergmann
Cc: Palmer Dabbelt
---
arc
From: Guo Ren
Current riscv doesn't support the 32bit KVM API. Let's make it
clear by not selecting KVM_COMPAT.
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
virt/kvm/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/virt/kvm/Kconfig b/virt/kvm
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
Hi Linus,
Please pull some more powerpc fixes for 5.17:
The following changes since commit dd81e1c7d5fb126e5fbc5c9e334d7b3ec29a16a0:
Merge tag 'powerpc-5.17-2' of
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux (2022-01-23
17:52:42
The pull request you sent on Sat, 29 Jan 2022 23:38:52 +1100:
> https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
> tags/powerpc-5.17-3
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/d66c1e79b9fcbfc6559ea3c5b1243d590fa04179
Thank you!
--
Deet-doot-d
ACK, will do.
On Wed, Jan 26, 2022 at 5:45 AM Greg KH wrote:
>
> On Mon, Jan 17, 2022 at 08:42:57PM -0800, Walt Drummond wrote:
> > This patchset adds TTY status message request feature to the n_tty
> > line dicipline. This feature prints a brief message containing basic
> > system and process g
This series allow architectures to request having modules data in
vmalloc area instead of module area.
This is required on powerpc book3s/32 in order to set data non
executable, because it is not possible to set executability on page
basis, this is done per 256 Mbytes segments. The module area has
In order to separate text and data, we need to setup
two rb trees.
Modify functions to give the tree as a parameter.
Signed-off-by: Christophe Leroy
---
kernel/module.c | 38 +++---
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/kernel/module.c b
In order to allow separation of data from text, add another layout,
called data_layout. For architectures requesting separation of text
and data, only text will go in core_layout and data will go in
data_layout.
For architectures which keep text and data together, make data_layout
an alias of core
Add CONFIG_ARCH_WANTS_MODULES_DATA_IN_VMALLOC to allow architectures
to request having modules data in vmalloc area instead of module area.
This is required on powerpc book3s/32 in order to set data non
executable, because it is not possible to set executability on page
basis, this is done per 256
Replace module_addr_min and module_addr_max by
mod_tree.addr_min and mod_tree.addr_max
Signed-off-by: Christophe Leroy
---
kernel/module.c | 9 +++--
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/kernel/module.c b/kernel/module.c
index f3758115ebaa..01fdc9c8a5e2 100644
--- a/
book3s/32 and 8xx have a separate area for allocating modules,
defined by MODULES_VADDR / MODULES_END.
On book3s/32, it is not possible to protect against execution
on a page basis. A full 256M segment is either Exec or NoExec.
The module area is in an Exec segment while vmalloc area is
in a NoExe
In order to separate text and data, we need to setup
two rb trees.
This means that struct mod_tree_root is required even without
MODULES_TREE_LOOKUP.
Signed-off-by: Christophe Leroy
---
kernel/module.c | 26 +-
1 file changed, 13 insertions(+), 13 deletions(-)
diff --gi
This is a backport for 5.10
To apply, it also requires commit 37eb7ca91b69 ("powerpc/32s: Allocate
one 256k IBAT instead of two consecutives 128k IBATs")
(cherry picked from commit d37823c3528e5e0705fc7746bcbc2afffb619259)
It has been reported some configuration where the kernel doesn't
boot wit
This is a backport for 5.16 and 5.15.
To apply, it also requires commit 37eb7ca91b69 ("powerpc/32s: Allocate
one 256k IBAT instead of two consecutives 128k IBATs")
(cherry picked from commit d37823c3528e5e0705fc7746bcbc2afffb619259)
It has been reported some configuration where the kernel doesn'
Hi Ahmad-san,
Thanks for your investigation.
The issue is still there with #define FORCE_WORD_WRITE 1:
jffs2: Write clean marker to block at 0x000a failed: -5
MTD do_write_oneword_once(): software timeout
Which kernel version has been tested about this?
Since the buffered writes dis
On Sat, Jan 29, 2022 at 1:17 PM wrote:
>
> From: Guo Ren
>
> There are 7 64bit architectures that support Linux COMPAT mode to
> run 32bit applications. A lot of definitions are duplicate:
> - COMPAT_USER_HZ
> - COMPAT_RLIM_INFINITY
> - COMPAT_OFF_T_MAX
> - __compat_uid_t, __compat_uid_t
> -
On Sat, Jan 29, 2022 at 1:17 PM wrote:
> +
> +#define COMPAT_RLIM_INFINITY 0x7fff
>
> +#define F_GETLK64 12
> +#define F_SETLK64 13
> +#define F_SETLKW64 14
These now come from the generic definitions I think. The flock definitions
are just the normal ones, and AFAICT the RLIM
> Implement compat sys_call_table and some system call functions:
> truncate64, ftruncate64, fallocate, pread64, pwrite64,
> sync_file_range, readahead, fadvise64_64 which need argument
> translation.
>
> Signed-off-by: Guo Ren
> Signed-off-by: Guo Ren
> Cc: Arnd Bergmann
This all looks really
randconfig-c002-20220124
arm randconfig-c002-20220129
arm randconfig-c002-20220130
ia64 allmodconfig
ia64 allyesconfig
m68k allmodconfig
m68k
config
arm footbridge_defconfig
arm randconfig-c002-20220127
arm randconfig-c002-20220124
arm randconfig-c002-20220130
arm randconfig-c002-20220129
ia64defconfig
ia64 allyesc
allyesconfig
arm randconfig-c002-20220127
arm randconfig-c002-20220124
arm randconfig-c002-20220129
arm randconfig-c002-20220130
ia64 allmodconfig
ia64 allyesconfig
m68k
On Sun, Jan 30, 2022 at 5:56 AM Arnd Bergmann wrote:
>
> On Sat, Jan 29, 2022 at 1:17 PM wrote:
> > +
> > +#define COMPAT_RLIM_INFINITY 0x7fff
> >
> > +#define F_GETLK64 12
> > +#define F_SETLK64 13
> > +#define F_SETLKW64 14
>
> These now come from the generic definitions I t
On Sun, Jan 30, 2022 at 6:41 AM Arnd Bergmann wrote:
>
> > Implement compat sys_call_table and some system call functions:
> > truncate64, ftruncate64, fallocate, pread64, pwrite64,
> > sync_file_range, readahead, fadvise64_64 which need argument
> > translation.
> >
> > Signed-off-by: Guo Ren
>
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