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Now that we started making the linker warn about orphan sections
(input sections that are not explicitly consumed by an output section),
some configurations produce the following warning:
aarch64-linux-gnu-ld: warning: orphan section `.igot.plt' from
`arch/arm64/kernel/head.o' being placed in section `.igot.plt'
It could be any file that triggers this - head.o is simply the first
input file in the link - and the resulting .igot.plt section never
actually appears in vmlinux as it turns out to be empty.
So let's add .igot.plt to our collection of input sections to disregard
unless they are empty.
Signed-off-by: Ard Biesheuvel <[email protected]>
Cc: Jessica Yu <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Nick Desaulniers <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>
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The icache_policy_str[] definition causes a warning when extra
warning flags are enabled:
arch/arm64/kernel/cpuinfo.c:38:26: warning: initialized field overwritten [-Woverride-init]
38 | [ICACHE_POLICY_VIPT] = "VIPT",
| ^~~~~~
arch/arm64/kernel/cpuinfo.c:38:26: note: (near initialization for 'icache_policy_str[2]')
arch/arm64/kernel/cpuinfo.c:39:26: warning: initialized field overwritten [-Woverride-init]
39 | [ICACHE_POLICY_PIPT] = "PIPT",
| ^~~~~~
arch/arm64/kernel/cpuinfo.c:39:26: note: (near initialization for 'icache_policy_str[3]')
arch/arm64/kernel/cpuinfo.c:40:27: warning: initialized field overwritten [-Woverride-init]
40 | [ICACHE_POLICY_VPIPT] = "VPIPT",
| ^~~~~~~
arch/arm64/kernel/cpuinfo.c:40:27: note: (near initialization for 'icache_policy_str[0]')
There is no real need for the default initializer here, as printing a
NULL string is harmless. Rewrite the logic to have an explicit
reserved value for the only one that uses the default value.
This partially reverts the commit that removed ICACHE_POLICY_AIVIVT.
Fixes: 155433cb365e ("arm64: cache: Remove support for ASID-tagged VIVT I-caches")
Signed-off-by: Arnd Bergmann <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>
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According to the SMCCC spec[1](7.5.2 Discovery) the
ARM_SMCCC_ARCH_WORKAROUND_1 function id only returns 0, 1, and
SMCCC_RET_NOT_SUPPORTED.
0 is "workaround required and safe to call this function"
1 is "workaround not required but safe to call this function"
SMCCC_RET_NOT_SUPPORTED is "might be vulnerable or might not be, who knows, I give up!"
SMCCC_RET_NOT_SUPPORTED might as well mean "workaround required, except
calling this function may not work because it isn't implemented in some
cases". Wonderful. We map this SMC call to
0 is SPECTRE_MITIGATED
1 is SPECTRE_UNAFFECTED
SMCCC_RET_NOT_SUPPORTED is SPECTRE_VULNERABLE
For KVM hypercalls (hvc), we've implemented this function id to return
SMCCC_RET_NOT_SUPPORTED, 0, and SMCCC_RET_NOT_REQUIRED. One of those
isn't supposed to be there. Per the code we call
arm64_get_spectre_v2_state() to figure out what to return for this
feature discovery call.
0 is SPECTRE_MITIGATED
SMCCC_RET_NOT_REQUIRED is SPECTRE_UNAFFECTED
SMCCC_RET_NOT_SUPPORTED is SPECTRE_VULNERABLE
Let's clean this up so that KVM tells the guest this mapping:
0 is SPECTRE_MITIGATED
1 is SPECTRE_UNAFFECTED
SMCCC_RET_NOT_SUPPORTED is SPECTRE_VULNERABLE
Note: SMCCC_RET_NOT_AFFECTED is 1 but isn't part of the SMCCC spec
Fixes: c118bbb52743 ("arm64: KVM: Propagate full Spectre v2 workaround state to KVM guests")
Signed-off-by: Stephen Boyd <[email protected]>
Acked-by: Marc Zyngier <[email protected]>
Acked-by: Will Deacon <[email protected]>
Cc: Andre Przywara <[email protected]>
Cc: Steven Price <[email protected]>
Cc: Marc Zyngier <[email protected]>
Cc: [email protected]
Link: https://developer.arm.com/documentation/den0028/latest [1]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>
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Commit d53d9bc0cf78 ("x86/debug: Change thread.debugreg6 to
thread.virtual_dr6") changed the semantics of the variable from random
collection of bits, to exactly only those bits that ptrace() needs.
Unfortunately this lost DR_STEP for PTRACE_{BLOCK,SINGLE}STEP.
Furthermore, it turns out that userspace expects DR_STEP to be
unconditionally available, even for manual TF usage outside of
PTRACE_{BLOCK,SINGLE}_STEP.
Fixes: d53d9bc0cf78 ("x86/debug: Change thread.debugreg6 to thread.virtual_dr6")
Reported-by: Kyle Huey <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Tested-by: Kyle Huey <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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The ->virtual_dr6 is the value used by ptrace_{get,set}_debugreg(6). A
kernel #DB clearing it could mean spurious malfunction of ptrace()
expectations.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Tested-by: Kyle Huey <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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The SDM states that #DB clears DEBUGCTLMSR_BTF, this means that when the
bit is set for userspace (TIF_BLOCKSTEP) and a kernel #DB happens first,
the BTF bit meant for userspace execution is lost.
Have the kernel #DB handler restore the BTF bit when it was requested
for userspace.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Tested-by: Kyle Huey <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A couple of x86 fixes which missed rc1 due to my stupidity:
- Drop lazy TLB mode before switching to the temporary address space
for text patching.
text_poke() switches to the temporary mm which clears the lazy mode
and restores the original mm afterwards. Due to clearing lazy mode
this might restore a already dead mm if exit_mmap() runs in
parallel on another CPU.
- Document the x32 syscall design fail vs. syscall numbers 512-547
properly.
- Fix the ORC unwinder to handle the inactive task frame correctly.
This was unearthed due to the slightly different code generation of
gcc-10.
- Use an up to date screen_info for the boot params of kexec instead
of the possibly stale and invalid version which happened to be
valid when the kexec kernel was loaded"
* tag 'x86-urgent-2020-10-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/alternative: Don't call text_poke() in lazy TLB mode
x86/syscalls: Document the fact that syscalls 512-547 are a legacy mistake
x86/unwind/orc: Fix inactive tasks with stack pointer in %sp on GCC 10 compiled kernels
hyperv_fb: Update screen_info after removing old framebuffer
x86/kexec: Use up-to-dated screen_info copy to fill boot params
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull orphan section fixes from Kees Cook:
"A couple corner cases were found from the link-time orphan section
handling series:
- arm: handle .ARM.exidx and .ARM.extab sections (Nathan Chancellor)
- x86: collect .ctors.* with .ctors (Kees Cook)"
* tag 'orphan-handling-v5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
arm/build: Always handle .ARM.exidx and .ARM.extab sections
vmlinux.lds.h: Keep .ctors.* with .ctors
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After turning on warnings for orphan section placement, enabling
CONFIG_UNWINDER_FRAME_POINTER instead of CONFIG_UNWINDER_ARM causes
thousands of warnings when clang + ld.lld are used:
$ scripts/config --file arch/arm/configs/multi_v7_defconfig \
-d CONFIG_UNWINDER_ARM \
-e CONFIG_UNWINDER_FRAME_POINTER
$ make -skj"$(nproc)" ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- LLVM=1 defconfig zImage
ld.lld: warning: init/built-in.a(main.o):(.ARM.extab) is being placed in '.ARM.extab'
ld.lld: warning: init/built-in.a(main.o):(.ARM.extab.init.text) is being placed in '.ARM.extab.init.text'
ld.lld: warning: init/built-in.a(main.o):(.ARM.extab.ref.text) is being placed in '.ARM.extab.ref.text'
ld.lld: warning: init/built-in.a(do_mounts.o):(.ARM.extab.init.text) is being placed in '.ARM.extab.init.text'
ld.lld: warning: init/built-in.a(do_mounts.o):(.ARM.extab) is being placed in '.ARM.extab'
ld.lld: warning: init/built-in.a(do_mounts_rd.o):(.ARM.extab.init.text) is being placed in '.ARM.extab.init.text'
ld.lld: warning: init/built-in.a(do_mounts_rd.o):(.ARM.extab) is being placed in '.ARM.extab'
ld.lld: warning: init/built-in.a(do_mounts_initrd.o):(.ARM.extab.init.text) is being placed in '.ARM.extab.init.text'
ld.lld: warning: init/built-in.a(initramfs.o):(.ARM.extab.init.text) is being placed in '.ARM.extab.init.text'
ld.lld: warning: init/built-in.a(initramfs.o):(.ARM.extab) is being placed in '.ARM.extab'
ld.lld: warning: init/built-in.a(calibrate.o):(.ARM.extab.init.text) is being placed in '.ARM.extab.init.text'
ld.lld: warning: init/built-in.a(calibrate.o):(.ARM.extab) is being placed in '.ARM.extab'
These sections are handled by the ARM_UNWIND_SECTIONS define, which is
only added to the list of sections when CONFIG_ARM_UNWIND is set.
CONFIG_ARM_UNWIND is a hidden symbol that is only selected when
CONFIG_UNWINDER_ARM is set so CONFIG_UNWINDER_FRAME_POINTER never
handles these sections. According to the help text of
CONFIG_UNWINDER_ARM, these sections should be discarded so that the
kernel image size is not affected.
Fixes: 5a17850e251a ("arm/build: Warn on orphan section placement")
Link: https://github.com/ClangBuiltLinux/linux/issues/1152
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Nathan Chancellor <[email protected]>
Review-by: Nick Desaulniers <[email protected]>
Tested-by: Nick Desaulniers <[email protected]>
[kees: Made the discard slightly more specific]
Signed-off-by: Kees Cook <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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Setting both CONFIG_KPROBES=y and CONFIG_FORTIFY_SOURCE=y on ARM leads
to a panic in memcpy() when injecting a kprobe despite the fixes found
in commit e46daee53bb5 ("ARM: 8806/1: kprobes: Fix false positive with
FORTIFY_SOURCE") and commit 0ac569bf6a79 ("ARM: 8834/1: Fix: kprobes:
optimized kprobes illegal instruction").
arch/arm/include/asm/kprobes.h effectively declares
the target type of the optprobe_template_entry assembly label as a u32
which leads memcpy()'s __builtin_object_size() call to determine that
the pointed-to object is of size four. However, the symbol is used as a handle
for the optimised probe assembly template that is at least 96 bytes in size.
The symbol's use despite its type blows up the memcpy() in ARM's
arch_prepare_optimized_kprobe() with a false-positive fortify_panic() when it
should instead copy the optimised probe template into place:
```
$ sudo perf probe -a aspeed_g6_pinctrl_probe
[ 158.457252] detected buffer overflow in memcpy
[ 158.458069] ------------[ cut here ]------------
[ 158.458283] kernel BUG at lib/string.c:1153!
[ 158.458436] Internal error: Oops - BUG: 0 [#1] SMP ARM
[ 158.458768] Modules linked in:
[ 158.459043] CPU: 1 PID: 99 Comm: perf Not tainted 5.9.0-rc7-00038-gc53ebf8167e9 #158
[ 158.459296] Hardware name: Generic DT based system
[ 158.459529] PC is at fortify_panic+0x18/0x20
[ 158.459658] LR is at __irq_work_queue_local+0x3c/0x74
[ 158.459831] pc : [<8047451c>] lr : [<8020ecd4>] psr: 60000013
[ 158.460032] sp : be2d1d50 ip : be2d1c58 fp : be2d1d5c
[ 158.460174] r10: 00000006 r9 : 00000000 r8 : 00000060
[ 158.460348] r7 : 8011e434 r6 : b9e0b800 r5 : 7f000000 r4 : b9fe4f0c
[ 158.460557] r3 : 80c04cc8 r2 : 00000000 r1 : be7c03cc r0 : 00000022
[ 158.460801] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 158.461037] Control: 10c5387d Table: b9cd806a DAC: 00000051
[ 158.461251] Process perf (pid: 99, stack limit = 0x81c71a69)
[ 158.461472] Stack: (0xbe2d1d50 to 0xbe2d2000)
[ 158.461757] 1d40: be2d1d84 be2d1d60 8011e724 80474510
[ 158.462104] 1d60: b9e0b800 b9fe4f0c 00000000 b9fe4f14 80c8ec80 be235000 be2d1d9c be2d1d88
[ 158.462436] 1d80: 801cee44 8011e57c b9fe4f0c 00000000 be2d1dc4 be2d1da0 801d0ad0 801cedec
[ 158.462742] 1da0: 00000000 00000000 b9fe4f00 ffffffea 00000000 be235000 be2d1de4 be2d1dc8
[ 158.463087] 1dc0: 80204604 801d0738 00000000 00000000 b9fe4004 ffffffea be2d1e94 be2d1de8
[ 158.463428] 1de0: 80205434 80204570 00385c00 00000000 00000000 00000000 be2d1e14 be2d1e08
[ 158.463880] 1e00: 802ba014 b9fe4f00 b9e718c0 b9fe4f84 b9e71ec8 be2d1e24 00000000 00385c00
[ 158.464365] 1e20: 00000000 626f7270 00000065 802b905c be2d1e94 0000002e 00000000 802b9914
[ 158.464829] 1e40: be2d1e84 be2d1e50 802b9914 8028ff78 804629d0 b9e71ec0 0000002e b9e71ec0
[ 158.465141] 1e60: be2d1ea8 80c04cc8 00000cc0 b9e713c4 00000002 80205834 80205834 0000002e
[ 158.465488] 1e80: be235000 be235000 be2d1ea4 be2d1e98 80205854 80204e94 be2d1ecc be2d1ea8
[ 158.465806] 1ea0: 801ee4a0 80205840 00000002 80c04cc8 00000000 0000002e 0000002e 00000000
[ 158.466110] 1ec0: be2d1f0c be2d1ed0 801ee5c8 801ee428 00000000 be2d0000 006b1fd0 00000051
[ 158.466398] 1ee0: 00000000 b9eedf00 0000002e 80204410 006b1fd0 be2d1f60 00000000 00000004
[ 158.466763] 1f00: be2d1f24 be2d1f10 8020442c 801ee4c4 80205834 802c613c be2d1f5c be2d1f28
[ 158.467102] 1f20: 802c60ac 8020441c be2d1fac be2d1f38 8010c764 802e9888 be2d1f5c b9eedf00
[ 158.467447] 1f40: b9eedf00 006b1fd0 0000002e 00000000 be2d1f94 be2d1f60 802c634c 802c5fec
[ 158.467812] 1f60: 00000000 00000000 00000000 80c04cc8 006b1fd0 00000003 76f7a610 00000004
[ 158.468155] 1f80: 80100284 be2d0000 be2d1fa4 be2d1f98 802c63ec 802c62e8 00000000 be2d1fa8
[ 158.468508] 1fa0: 80100080 802c63e0 006b1fd0 00000003 00000003 006b1fd0 0000002e 00000000
[ 158.468858] 1fc0: 006b1fd0 00000003 76f7a610 00000004 006b1fb0 0026d348 00000017 7ef2738c
[ 158.469202] 1fe0: 76f3431c 7ef272d8 0014ec50 76f34338 60000010 00000003 00000000 00000000
[ 158.469461] Backtrace:
[ 158.469683] [<80474504>] (fortify_panic) from [<8011e724>] (arch_prepare_optimized_kprobe+0x1b4/0x1f8)
[ 158.470021] [<8011e570>] (arch_prepare_optimized_kprobe) from [<801cee44>] (alloc_aggr_kprobe+0x64/0x70)
[ 158.470287] r9:be235000 r8:80c8ec80 r7:b9fe4f14 r6:00000000 r5:b9fe4f0c r4:b9e0b800
[ 158.470478] [<801cede0>] (alloc_aggr_kprobe) from [<801d0ad0>] (register_kprobe+0x3a4/0x5a0)
[ 158.470685] r5:00000000 r4:b9fe4f0c
[ 158.470790] [<801d072c>] (register_kprobe) from [<80204604>] (__register_trace_kprobe+0xa0/0xa4)
[ 158.471001] r9:be235000 r8:00000000 r7:ffffffea r6:b9fe4f00 r5:00000000 r4:00000000
[ 158.471188] [<80204564>] (__register_trace_kprobe) from [<80205434>] (trace_kprobe_create+0x5ac/0x9ac)
[ 158.471408] r7:ffffffea r6:b9fe4004 r5:00000000 r4:00000000
[ 158.471553] [<80204e88>] (trace_kprobe_create) from [<80205854>] (create_or_delete_trace_kprobe+0x20/0x3c)
[ 158.471766] r10:be235000 r9:be235000 r8:0000002e r7:80205834 r6:80205834 r5:00000002
[ 158.471949] r4:b9e713c4
[ 158.472027] [<80205834>] (create_or_delete_trace_kprobe) from [<801ee4a0>] (trace_run_command+0x84/0x9c)
[ 158.472255] [<801ee41c>] (trace_run_command) from [<801ee5c8>] (trace_parse_run_command+0x110/0x1f8)
[ 158.472471] r6:00000000 r5:0000002e r4:0000002e
[ 158.472594] [<801ee4b8>] (trace_parse_run_command) from [<8020442c>] (probes_write+0x1c/0x28)
[ 158.472800] r10:00000004 r9:00000000 r8:be2d1f60 r7:006b1fd0 r6:80204410 r5:0000002e
[ 158.472968] r4:b9eedf00
[ 158.473046] [<80204410>] (probes_write) from [<802c60ac>] (vfs_write+0xcc/0x1e8)
[ 158.473226] [<802c5fe0>] (vfs_write) from [<802c634c>] (ksys_write+0x70/0xf8)
[ 158.473400] r8:00000000 r7:0000002e r6:006b1fd0 r5:b9eedf00 r4:b9eedf00
[ 158.473567] [<802c62dc>] (ksys_write) from [<802c63ec>] (sys_write+0x18/0x1c)
[ 158.473745] r9:be2d0000 r8:80100284 r7:00000004 r6:76f7a610 r5:00000003 r4:006b1fd0
[ 158.473932] [<802c63d4>] (sys_write) from [<80100080>] (ret_fast_syscall+0x0/0x54)
[ 158.474126] Exception stack(0xbe2d1fa8 to 0xbe2d1ff0)
[ 158.474305] 1fa0: 006b1fd0 00000003 00000003 006b1fd0 0000002e 00000000
[ 158.474573] 1fc0: 006b1fd0 00000003 76f7a610 00000004 006b1fb0 0026d348 00000017 7ef2738c
[ 158.474811] 1fe0: 76f3431c 7ef272d8 0014ec50 76f34338
[ 158.475171] Code: e24cb004 e1a01000 e59f0004 ebf40dd3 (e7f001f2)
[ 158.475847] ---[ end trace 55a5b31c08a29f00 ]---
[ 158.476088] Kernel panic - not syncing: Fatal exception
[ 158.476375] CPU0: stopping
[ 158.476709] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G D 5.9.0-rc7-00038-gc53ebf8167e9 #158
[ 158.477176] Hardware name: Generic DT based system
[ 158.477411] Backtrace:
[ 158.477604] [<8010dd28>] (dump_backtrace) from [<8010dfd4>] (show_stack+0x20/0x24)
[ 158.477990] r7:00000000 r6:60000193 r5:00000000 r4:80c2f634
[ 158.478323] [<8010dfb4>] (show_stack) from [<8046390c>] (dump_stack+0xcc/0xe8)
[ 158.478686] [<80463840>] (dump_stack) from [<80110750>] (handle_IPI+0x334/0x3a0)
[ 158.479063] r7:00000000 r6:00000004 r5:80b65cc8 r4:80c78278
[ 158.479352] [<8011041c>] (handle_IPI) from [<801013f8>] (gic_handle_irq+0x88/0x94)
[ 158.479757] r10:10c5387d r9:80c01ed8 r8:00000000 r7:c0802000 r6:80c0537c r5:000003ff
[ 158.480146] r4:c080200c r3:fffffff4
[ 158.480364] [<80101370>] (gic_handle_irq) from [<80100b6c>] (__irq_svc+0x6c/0x90)
[ 158.480748] Exception stack(0x80c01ed8 to 0x80c01f20)
[ 158.481031] 1ec0: 000128bc 00000000
[ 158.481499] 1ee0: be7b8174 8011d3a0 80c00000 00000000 80c04cec 80c04d28 80c5d7c2 80a026d4
[ 158.482091] 1f00: 10c5387d 80c01f34 80c01f38 80c01f28 80109554 80109558 60000013 ffffffff
[ 158.482621] r9:80c00000 r8:80c5d7c2 r7:80c01f0c r6:ffffffff r5:60000013 r4:80109558
[ 158.482983] [<80109518>] (arch_cpu_idle) from [<80818780>] (default_idle_call+0x38/0x120)
[ 158.483360] [<80818748>] (default_idle_call) from [<801585a8>] (do_idle+0xd4/0x158)
[ 158.483945] r5:00000000 r4:80c00000
[ 158.484237] [<801584d4>] (do_idle) from [<801588f4>] (cpu_startup_entry+0x28/0x2c)
[ 158.484784] r9:80c78000 r8:00000000 r7:80c78000 r6:80c78040 r5:80c04cc0 r4:000000d6
[ 158.485328] [<801588cc>] (cpu_startup_entry) from [<80810a78>] (rest_init+0x9c/0xbc)
[ 158.485930] [<808109dc>] (rest_init) from [<80b00ae4>] (arch_call_rest_init+0x18/0x1c)
[ 158.486503] r5:80c04cc0 r4:00000001
[ 158.486857] [<80b00acc>] (arch_call_rest_init) from [<80b00fcc>] (start_kernel+0x46c/0x548)
[ 158.487589] [<80b00b60>] (start_kernel) from [<00000000>] (0x0)
```
Fixes: e46daee53bb5 ("ARM: 8806/1: kprobes: Fix false positive with FORTIFY_SOURCE")
Fixes: 0ac569bf6a79 ("ARM: 8834/1: Fix: kprobes: optimized kprobes illegal instruction")
Suggested-by: Kees Cook <[email protected]>
Signed-off-by: Andrew Jeffery <[email protected]>
Tested-by: Luka Oreskovic <[email protected]>
Tested-by: Joel Stanley <[email protected]>
Reviewed-by: Joel Stanley <[email protected]>
Acked-by: Masami Hiramatsu <[email protected]>
Cc: Luka Oreskovic <[email protected]>
Cc: Juraj Vijtiuk <[email protected]>
Signed-off-by: Russell King <[email protected]>
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MIPS should export its local version of "has_transparent_hugepage"
so that loadable modules (dax) can use it.
Fixes this build error:
ERROR: modpost: "has_transparent_hugepage" [drivers/dax/dax.ko] undefined!
Fixes: fd8cfd300019 ("arch: fix has_transparent_hugepage()")
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Randy Dunlap <[email protected]>
Cc: Thomas Bogendoerfer <[email protected]>
Cc: [email protected]
Cc: Dan Williams <[email protected]>
Cc: Vishal Verma <[email protected]>
Cc: Dave Jiang <[email protected]>
Cc: [email protected]
Cc: Hugh Dickins <[email protected]>
Cc: Andrew Morton <[email protected]>
Signed-off-by: Thomas Bogendoerfer <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/fixes
i.MX fixes for 5.10, 2nd round:
A couple of more defconfig fixes to enable CONFIG_GPIO_MXC option for
i.MX ARMv4/v5 devices.
* tag 'imx-fixes-5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: multi_v5_defconfig: Select CONFIG_GPIO_MXC
ARM: imx_v4_v5_defconfig: Select CONFIG_GPIO_MXC
Link: https://lore.kernel.org/r/20201026235230.GL9880@dragon
Signed-off-by: Arnd Bergmann <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into arm/fixes
Amlogic fixes for v5.10-rc1
- misc DT only fixes
* tag 'amlogic-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
arm64: dts: meson: odroid-n2 plus: fix vddcpu_a pwm
ARM: dts: meson8: remove two invalid interrupt lines from the GPU node
arm64: dts: amlogic: add missing ethernet reset ID
arm64: dts: amlogic: meson-g12: use the G12A specific dwmac compatible
arm64: dts: meson: add missing g12 rng clock
arm64: dts: meson-axg-s400: enable USB OTG
arm64: dts: meson-axg: add USB nodes
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnd Bergmann <[email protected]>
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Based on more testing, commit 8ca5ee624b4c ("ARM: OMAP2+: Restore MPU
power domain if cpu_cluster_pm_enter() fails") is a poor fix for handling
cpu_cluster_pm_enter() returned errors.
We should not override the cpuidle states with a hardcoded PWRDM_POWER_ON
value. Instead, we should use a configured idle state that does not cause
the context to be lost. Otherwise we end up configuring a potentially
improper state for the MPUSS. We also want to update the returned state
index for the selected state.
Let's just select the highest power idle state C1 to ensure no context
loss is allowed on cpu_cluster_pm_enter() errors. With these changes we
can now unconditionally call omap4_enter_lowpower() for WFI like we did
earlier before commit 55be2f50336f ("ARM: OMAP2+: Handle errors for
cpu_pm"). And we can return the selected state index.
Fixes: 8f04aea048d5 ("ARM: OMAP2+: Restore MPU power domain if cpu_cluster_pm_enter() fails")
Fixes: 55be2f50336f ("ARM: OMAP2+: Handle errors for cpu_pm")
Signed-off-by: Tony Lindgren <[email protected]>
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Since commit 12d16b397ce0 ("gpio: mxc: Support module build") the
CONFIG_GPIO_MXC option needs to be explicitly selected.
Select it to avoid boot issues on imx25/imx27 due to the lack of the
GPIO driver.
Signed-off-by: Fabio Estevam <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Since commit 12d16b397ce0 ("gpio: mxc: Support module build") the
CONFIG_GPIO_MXC option needs to be explicitly selected.
Select it to avoid boot issues on imx25/imx27 due to the lack of the
GPIO driver.
Signed-off-by: Fabio Estevam <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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A couple of um files ended up not including the header file that defines
the __section() macro, and the simplest fix is to just revert the change
for those files.
Fixes: 33def8498fdd treewide: Convert macro and uses of __section(foo) to __section("foo")
Reported-and-tested-by: Guenter Roeck <[email protected]>
Cc: Joe Perches <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
"This fixes a regression in x86/poly1305"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: x86/poly1305 - add back a needed assignment
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The comment about Hyper-V accessors is unclear regarding their
potential use in x2apic mode, as is the associated commit message
in e211288b72f1. Clarify that while the architectural and
synthetic MSRs are equivalent in x2apic mode, the full set of xapic
accessors cannot be used because of register layout differences.
Fixes: e211288b72f1 ("x86/hyperv: Make vapic support x2apic mode")
Signed-off-by: Michael Kelley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Wei Liu <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/fixes
i.MX fixes for 5.10:
With commit 12d16b397ce0 ("gpio: mxc: Support module build") in place,
GPIO_MXC has no 'def_bool y' anymore, and needs to be enabled by
defconfig. It updates the defconfig files to explicitly enable the
option for fixing boot failure on i.MX platform.
* tag 'imx-fixes-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: multi_v7_defconfig: Build in CONFIG_GPIO_MXC by default
ARM: imx_v6_v7_defconfig: Build in CONFIG_GPIO_MXC by default
arm64: defconfig: Build in CONFIG_GPIO_MXC by default
Link: https://lore.kernel.org/r/20201026135601.GA32675@dragon
Signed-off-by: Arnd Bergmann <[email protected]>
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Currently s390 build is broken.
SECTCMP .boot.data
error: section .boot.data differs between vmlinux and arch/s390/boot/compressed/vmlinux
make[2]: *** [arch/s390/boot/section_cmp.boot.data] Error 1
SECTCMP .boot.preserved.data
error: section .boot.preserved.data differs between vmlinux and arch/s390/boot/compressed/vmlinux
make[2]: *** [arch/s390/boot/section_cmp.boot.preserved.data] Error 1
make[1]: *** [bzImage] Error 2
Commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo)
to __section("foo")") converted all __section(foo) to __section("foo").
This is wrong for __bootdata / __bootdata_preserved macros which want
variable names to be a part of intermediate section names .boot.data.<var
name> and .boot.preserved.data.<var name>. Those sections are later
sorted by alignment + name and merged together into final .boot.data
/ .boot.preserved.data sections. Those sections must be identical in
the decompressor and the decompressed kernel (that is checked during
the build).
Fixes: 33def8498fdd ("treewide: Convert macro and uses of __section(foo) to __section("foo")")
Signed-off-by: Vasily Gorbik <[email protected]>
Signed-off-by: Heiko Carstens <[email protected]>
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As it stands now, the vdso32 Makefile hardcodes the linker to ld.bfd
using -fuse-ld=bfd with $(CC). This was taken from the arm vDSO
Makefile, as the comment notes, done in commit d2b30cd4b722 ("ARM:
8384/1: VDSO: force use of BFD linker").
Commit fe00e50b2db8 ("ARM: 8858/1: vdso: use $(LD) instead of $(CC) to
link VDSO") changed that Makefile to use $(LD) directly instead of
through $(CC), which matches how the rest of the kernel operates. Since
then, LD=ld.lld means that the arm vDSO will be linked with ld.lld,
which has shown no problems so far.
Allow ld.lld to link this vDSO as we do the regular arm vDSO. To do
this, we need to do a few things:
* Add a LD_COMPAT variable, which defaults to $(CROSS_COMPILE_COMPAT)ld
with gcc and $(LD) if LLVM is 1, which will be ld.lld, or
$(CROSS_COMPILE_COMPAT)ld if not, which matches the logic of the main
Makefile. It is overrideable for further customization and avoiding
breakage.
* Eliminate cc32-ldoption, which matches commit 055efab3120b ("kbuild:
drop support for cc-ldoption").
With those, we can use $(LD_COMPAT) in cmd_ldvdso and change the flags
from compiler linker flags to linker flags directly. We eliminate
-mfloat-abi=soft because it is not handled by the linker.
Reported-by: Nick Desaulniers <[email protected]>
Signed-off-by: Nathan Chancellor <[email protected]>
Tested-by: Nick Desaulniers <[email protected]>
Reviewed-by: Nick Desaulniers <[email protected]>
Reviewed-by: Vincenzo Frascino <[email protected]>
Link: https://github.com/ClangBuiltLinux/linux/issues/1033
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>
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The Ethernet PHY on the Bananapi M64 has the RX and TX delays
enabled on the PHY, using pull-ups on the RXDLY and TXDLY pins.
Fix the phy-mode description to correct reflect this so that the
implementation doesn't reconfigure the delays incorrectly. This
happened with commit bbc4d71d6354 ("net: phy: realtek: fix rtl8211e
rx/tx delay config").
Fixes: e7295499903d ("arm64: allwinner: bananapi-m64: Enable dwmac-sun8i")
Fixes: 94f442886711 ("arm64: dts: allwinner: A64: Restore EMAC changes")
Signed-off-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Tested-by: Corentin Labbe <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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The Ethernet PHY on the Libre Computer ALL-H5-CC has the RX and TX
delays enabled on the PHY, using pull-ups on the RXDLY and TXDLY pins.
Fix the phy-mode description to correct reflect this so that the
implementation doesn't reconfigure the delays incorrectly. This
happened with commit bbc4d71d6354 ("net: phy: realtek: fix rtl8211e
rx/tx delay config").
Fixes: 60d0426d7603 ("arm64: dts: allwinner: h5: Add Libre Computer ALL-H5-CC H5 board")
Signed-off-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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The Ethernet PHY on the Bananapi M2+ has the RX and TX delays
enabled on the PHY, using pull-ups on the RXDLY and TXDLY pins.
Fix the phy-mode description to correct reflect this so that the
implementation doesn't reconfigure the delays incorrectly. This
happened with commit bbc4d71d6354 ("net: phy: realtek: fix rtl8211e
rx/tx delay config").
Fixes: 8c7ba536e709 ("ARM: sun8i: bananapi-m2-plus: Enable dwmac-sun8i")
Fixes: 4904337fe34f ("ARM: dts: sunxi: Restore EMAC changes (boards)")
Fixes: aa8fee415f46 ("ARM: dts: sun8i: h3: Split out non-SoC-specific parts of Bananapi M2 Plus")
Signed-off-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Tested-by: Jernej Skrabec <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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The Ethernet PHY on the Cubieboard 4 and A80 Optimus have the RX
and TX delays enabled on the PHY, using pull-ups on the RXDLY and
TXDLY pins.
Fix the phy-mode description to correct reflect this so that the
implementation doesn't reconfigure the delays incorrectly. This
happened with commit bbc4d71d6354 ("net: phy: realtek: fix rtl8211e
rx/tx delay config").
Fixes: 98048143b7f8 ("ARM: dts: sun9i: cubieboard4: Enable GMAC")
Fixes: bc9bd03a44f9 ("ARM: dts: sun9i: a80-optimus: Enable GMAC")
Signed-off-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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The Ethernet PHY on the Bananapi M3 and Cubietruck Plus have the RX
and TX delays enabled on the PHY, using pull-ups on the RXDLY and
TXDLY pins.
Fix the phy-mode description to correct reflect this so that the
implementation doesn't reconfigure the delays incorrectly. This
happened with commit bbc4d71d6354 ("net: phy: realtek: fix rtl8211e
rx/tx delay config").
Fixes: 039359948a4b ("ARM: dts: sun8i: a83t: Enable Ethernet on two boards")
Signed-off-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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The Ethernet PHY on the Orange Pi Plus 2E has the RX and TX delays
enabled on the PHY, using pull-ups on the RXDLY and TXDLY pins.
Fix the phy-mode description to correct reflect this so that the
implementation doesn't reconfigure the delays incorrectly. This
happened with commit bbc4d71d6354 ("net: phy: realtek: fix rtl8211e
rx/tx delay config").
Fixes: 4904337fe34f ("ARM: dts: sunxi: Restore EMAC changes (boards)")
Fixes: 7a78ef92cdc5 ("ARM: sun8i: h3: Enable EMAC with external PHY on Orange Pi Plus 2E")
Signed-off-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Tested-by: Jernej Skrabec <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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The Ethernet PHY on the Bananapi M1+ has the RX and TX delays
enabled on the PHY, using pull-ups on the RXDLY and TXDLY pins.
Fix the phy-mode description to correct reflect this so that the
implementation doesn't reconfigure the delays incorrectly. This
happened with commit bbc4d71d6354 ("net: phy: realtek: fix rtl8211e
rx/tx delay config").
Fixes: 04c85ecad32a ("ARM: dts: sun7i: Add dts file for Bananapi M1 Plus board")
Signed-off-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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The Ethernet PHY on the Cubietruck has the RX and TX delays
enabled on the PHY, using pull-ups on the RXDLY and TXDLY pins.
Fix the phy-mode description to correct reflect this so that the
implementation doesn't reconfigure the delays incorrectly. This
happened with commit bbc4d71d6354 ("net: phy: realtek: fix rtl8211e
rx/tx delay config").
Fixes: 67073d97672d ("ARM: dts: sun7i: cubietruck: Enable the GMAC")
Signed-off-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Tested-by: Emilio López <[email protected]>
Reviewed-by: Emilio López <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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The Ethernet PHY on the A31 Hummingbird has the RX and TX delays
enabled on the PHY, using pull-ups on the RXDLY and TXDLY pins.
Fix the phy-mode description to correct reflect this so that the
implementation doesn't reconfigure the delays incorrectly. This
happened with commit bbc4d71d6354 ("net: phy: realtek: fix rtl8211e
rx/tx delay config").
Fixes: c220aec2bb79 ("ARM: dts: sun6i: Add Merrii A31 Hummingbird support")
Signed-off-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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This reverts commit 75ee680cbd2e4d0156b94f9fec50076361ab12f2.
Turns out the activity and link LEDs on the RJ45 port are active low,
just like on the Orange Pi PC.
Revert the commit that says otherwise.
Fixes: 75ee680cbd2e ("arm: sun8i: orangepi-pc-plus: Set EMAC activity LEDs to active high")
Fixes: 4904337fe34f ("ARM: dts: sunxi: Restore EMAC changes (boards)")
Signed-off-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Tested-by: Jernej Skrabec <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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Ethernet PHY on BananaPi M2 Ultra provides RX and TX delays. Fix
ethernet node to reflect that fact.
Fixes: c36fd5a48bd2 ("ARM: dts: sun8i: r40: bananapi-m2-ultra: Enable GMAC ethernet controller")
Signed-off-by: Jernej Skrabec <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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RX and TX delay are provided by ethernet PHY. Reflect that in ethernet
node.
Fixes: 44a94c7ef989 ("arm64: dts: allwinner: H5: Restore EMAC changes")
Signed-off-by: Jernej Skrabec <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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According to board schematic, PHY provides both, RX and TX delays.
However, according to "fix" Realtek provided for this board, only TX
delay should be provided by PHY.
Tests show that both variants work but TX only PHY delay works
slightly better.
Update ethernet node to reflect the fact that PHY provides TX delay.
Fixes: 94f442886711 ("arm64: dts: allwinner: A64: Restore EMAC changes")
Signed-off-by: Jernej Skrabec <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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RX/TX delay on OrangePi Win board is set on PHY. Reflect that in
ethernet node.
Fixes: 93d6a27cfcc0 ("arm64: dts: allwinner: a64: Orange Pi Win: Add Ethernet node")
Signed-off-by: Jernej Skrabec <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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Since commit bbc4d71d6354 ("net: phy: realtek: fix rtl8211e rx/tx delay config"),
the network is unusable on PineH64 model A.
This is due to phy-mode incorrectly set to rgmii instead of rgmii-id.
Fixes: 729e1ffcf47e ("arm64: allwinner: h6: add support for the Ethernet on Pine H64")
Signed-off-by: Corentin Labbe <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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Before the commit bbc4d71d6354 ("net: phy: realtek: fix rtl8211e rx/tx
delay config"), the software overwrite for RX/TX delays of the RTL8211e
were not working properly and the Beelink GS1 had both RX/TX delay of RGMII
interface set using pull-up on the TXDLY and RXDLY pins.
Now that these delays are working properly they overwrite the HW
config and set this to 'rgmii' meaning no delay on both RX/TX.
This makes the ethernet of this board not working anymore.
Set the phy-mode to 'rgmii-id' meaning RGMII with RX/TX delays
in the device-tree to keep the correct configuration.
Fixes: 089bee8dd119 ("arm64: dts: allwinner: h6: Introduce Beelink GS1 board")
Signed-off-by: Clément Péron <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Acked-by: Chen-Yu Tsai <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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make dtbs_check warm about unknown address/size-cells property in the
pinetab device-tree.
This is because these information are not necessary.
Drop them.
Signed-off-by: Clément Péron <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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This makes validation happier.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lubomir Rintel <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
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The camera interfaces on MMP3 are on a separate power island that needs
to be turned on for them to operate and, ideally, turned off when the
cameras are not in use.
This hooks the power island with the camera interfaces in the device
tree.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lubomir Rintel <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
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Berlin SoCs always contain some DW APB timers which can be used as an
always-on broadcast timer.
Link: https://lore.kernel.org/r/[email protected]
Cc: <[email protected]> # v3.14+
Signed-off-by: Jisheng Zhang <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into arm/fixes
One fix for an unreasonable thermal trip point on the A10
* tag 'sunxi-fixes-for-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
ARM: dts: sun4i-a10: fix cpu_alert temperature
Link: https://lore.kernel.org/r/3c95a95f-c6fa-4b34-823b-ddaa7660d274.lettre@localhost
Signed-off-by: Arnd Bergmann <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into arm/fixes
mvebu fixes for 5.9 (part 1)
- Allow to use correct MAC address for particular DSA slaves /
ethernet ports on Espressobin (Armada 3720)
- Remove incorrect check in ll_get_coherency_base() used for Armada
370/XP SoCs.
* tag 'mvebu-fixes-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu:
ARM: mvebu: drop pointless check for coherency_base
arm64: dts: marvell: espressobin: Add ethernet switch aliases
Link: https://lore.kernel.org/r/87y2kkesj5.fsf@BL-laptop
Signed-off-by: Arnd Bergmann <[email protected]>
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We should select also PM_GENERIC_DOMAINS_OF in addition to
PM_GENERIC_DOMAINS to have device tree based PM domain providers
enabled.
Fixes: 58cbff023bfa ("soc: ti: omap-prm: Add basic power domain support")
Signed-off-by: Tony Lindgren <[email protected]>
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i.MX SoC GPIO driver provides the basic functions of GPIO pin operations
and IRQ operations, it is now changed from "def_bool y" to "tristate", so
it should be explicitly enabled to make sure all consumers work normally.
Signed-off-by: Anson Huang <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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i.MX SoC GPIO driver provides the basic functions of GPIO pin operations
and IRQ operations, it is now changed from "def_bool y" to "tristate", so
it should be explicitly enabled to make sure all consumers work normally.
Signed-off-by: Anson Huang <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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i.MX SoC GPIO driver provides the basic functions of GPIO pin operations
and IRQ operations, it is now changed from "def_bool y" to "tristate", so
it should be explicitly enabled to make sure all consumers work normally.
Signed-off-by: Anson Huang <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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I accidentally misplaced select PM_GENERIC_DOMAINS, it should be
selected for all the SoCs instead.
Fixes: 58cbff023bfa ("soc: ti: omap-prm: Add basic power domain support")
Signed-off-by: Tony Lindgren <[email protected]>
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Commit
db227c19e68db353 ("ARM: 8985/1: efi/decompressor: deal with HYP mode boot gracefully")
updated the EFI entry code to permit firmware to invoke the EFI stub
loader in HYP mode, with the MMU either enabled or disabled, neither
of which is permitted by the EFI spec, but which does happen in the
field.
In the MMU on case, we remain in HYP mode as configured by the firmware,
and rely on the fact that any HVC instruction issued in this mode will
be dispatched via the SVC slot in the HYP vector table. However, this
slot will point to a Thumb2 symbol if the kernel is built in Thumb2
mode, and so we have to configure HSCTLR to ensure that the exception
handlers are invoked in Thumb2 mode as well.
Fixes: db227c19e68db353 ("ARM: 8985/1: efi/decompressor: deal with HYP mode boot gracefully")
Signed-off-by: Ard Biesheuvel <[email protected]>
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