On Tue, Dec 21, 2021 at 09:01:06AM -0500, Stefan Berger wrote:
>
> On 12/21/21 03:47, Jarkko Sakkinen wrote:
> > On Sat, Dec 11, 2021 at 08:28:04PM -0500, Stefan Berger wrote:
> > > Fix the following crash on kexec by checking chip->ops for a NULL pointer
> > > in tpm_chip_start() and returning
Christophe Leroy writes:
> It has been reported some configuration where the kernel doesn't
> boot with KASAN enabled.
>
> This is due to wrong BAT allocation for the KASAN area:
>
> ---[ Data Block Address Translation ]---
> 0: 0xc000-0xcfff 0x 256M Kernel rw
The pull request you sent on Tue, 28 Dec 2021 22:23:50 +1100:
> https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
> tags/powerpc-5.16-5
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/f651faaaba5f41ffac195e64f58483721e60eafc
Thank you!
--
On Tue, Dec 28, 2021 at 02:47:26PM +0800, guo...@kernel.org wrote:
> From: Guo Ren
>
> This macro isn't used in Linux sched, now. Delete in
> include/linux/sched.h and arch's include/asm.
>
> Signed-off-by: Guo Ren
> Signed-off-by: Guo Ren
> Reviewed-by: Arnd Bergmann
> ---
>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
next-test
head: beeac538c366cd2828092adecd1edab28326c55b
commit: ff47a95d1a67477e9bc2049a840d93b68508e079 [46/179] powerpc/mm: Move
tlbcam_sz() and make it static
config: powerpc64-randconfig-s031-20211228
(https
On 12/28/21 2:26 AM, Kefeng Wang wrote:
>>> There are some disadvantages about this feature[2], one of the main
>>> concerns is the possible memory fragmentation/waste in some scenarios,
>>> also archs must ensure that any arch specific vmalloc allocations that
>>> require PAGE_SIZE mappings(eg,
() static
config: powerpc64-randconfig-s031-20211228
(https://download.01.org/0day-ci/archive/20211228/202112282327.yottekgx-...@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 11.2.0
reproduce:
wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin
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
Cc: Arnd Bergmann
---
arch/riscv/Kconfig | 19
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
---
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
---
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
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
Cc: Arnd Bergmann
---
arch/riscv/include/asm/elf.h | 49 +++-
1 file changed, 48 insertions(+), 1 deletion(-)
diff
From: Guo Ren
Implement compat_syscall_table.c with compat_sys_call_table & fixup
system call such as truncate64,pread64,fallocate which need two
regs to indicate 64bit-arg (copied from arm64).
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
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
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 | 132 +++
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
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
Cc: Arnd Bergmann
---
include/uapi/asm-generic/unistd.h | 4 ++--
tools/include/uapi/asm-generic/unistd.h | 4
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
Remove duplicate F_GETLK64,F_SETLK64,F_SETLKW64 definitions in
arch/*/include/asm/compat.h.
Signed-off-by: Guo Ren
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
arch/arm64/include/asm/compat.h | 4
arch/powerpc/include/asm/compat.h | 4
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
Cc: Arnd Bergmann
---
arch/arm64/include/asm/unistd.h | 1 +
arch/mips/include/asm/unistd.h| 2 ++
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
Cc: Arnd Bergmann
Cc: Christoph Hellwig
---
arch/arm64/Kconfig | 4
arch/mips/Kconfig| 5 -
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
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
Hi Linus,
Please pull one more powerpc fix for 5.16:
The following changes since commit 8734b41b3efe0fc6082c1937b0e88556c396dc96:
powerpc/module_64: Fix livepatching for RO modules (2021-12-14 23:13:03 +1100)
are available in the git
allmodconfig
i386 randconfig-c001-20211228
mips cavium_octeon_defconfig
h8300 edosk2674_defconfig
powerpcfsp2_defconfig
riscvnommu_virt_defconfig
powerpc mpc834x_mds_defconfig
arc
No arch implementation uses this opaque now.
Signed-off-by: Chao Gao
---
arch/arm64/kvm/arm.c | 2 +-
arch/mips/kvm/mips.c | 2 +-
arch/powerpc/kvm/powerpc.c | 2 +-
arch/riscv/kvm/main.c | 2 +-
arch/s390/kvm/kvm-s390.c | 2 +-
arch/x86/kvm/x86.c | 2 +-
KVM registers its CPU hotplug callback to CPU starting section. And in the
callback, KVM enables hardware virtualization on hotplugged CPUs if any VM
is running on existing CPUs.
There are two problems in the process:
1. KVM doesn't do compatibility checks before enabling hardware
virtualization
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