Update kernel to 3.18.140 and update to version 1.5.7 mk2000 #8
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stendro
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Mar 20, 2023
LLVM's integrated assembler appears to assume an argument with default
value is passed whenever it sees a comma right after the macro name.
It will be fine if the number of following arguments is one less than
the number of parameters specified in the macro definition. Otherwise,
it fails. For example, the following code works:
$ cat foo.s
.macro foo arg1=2, arg2=4
ldr r0, [r1, #\arg1]
ldr r0, [r1, #\arg2]
.endm
foo, arg2=8
$ llvm-mc -triple=armv7a -filetype=obj foo.s -o ias.o
arm-linux-gnueabihf-objdump -dr ias.o
ias.o: file format elf32-littlearm
Disassembly of section .text:
00000000 <.text>:
0: e5910001 ldr r0, [r1, #2]
4: e5910003 ldr r0, [r1, #8]
While the the following code would fail:
$ cat foo.s
.macro foo arg1=2, arg2=4
ldr r0, [r1, #\arg1]
ldr r0, [r1, #\arg2]
.endm
foo, arg1=2, arg2=8
$ llvm-mc -triple=armv7a -filetype=obj foo.s -o ias.o
foo.s:6:14: error: too many positional arguments
foo, arg1=2, arg2=8
This causes build failures as follows:
arch/arm64/kernel/vdso/gettimeofday.S:230:24: error: too many positional
arguments
clock_gettime_return, shift=1
^
arch/arm64/kernel/vdso/gettimeofday.S:253:24: error: too many positional
arguments
clock_gettime_return, shift=1
^
arch/arm64/kernel/vdso/gettimeofday.S:274:24: error: too many positional
arguments
clock_gettime_return, shift=1
This error is not in mainline because commit 28b1a824a4f4 ("arm64: vdso:
Substitute gettimeofday() with C implementation") rewrote this assembler
file in C as part of a 25 patch series that is unsuitable for stable.
Just remove the comma in the clock_gettime_return invocations in 4.19 so
that GNU as and LLVM's integrated assembler work the same.
Link:
ClangBuiltLinux/linux#1349
Suggested-by: Nathan Chancellor <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
Signed-off-by: Jian Cai <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Change-Id: I7eea04241c1f8ac7bc3b7915b781acdd1e2b6686
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Update kernel to 3.18.140
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