Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

unrecognized instruction mnemonic in arch/arm64/include/asm/alternative.h #924

Closed
tpimh opened this issue Mar 8, 2020 · 10 comments
Closed

unrecognized instruction mnemonic in arch/arm64/include/asm/alternative.h #924

tpimh opened this issue Mar 8, 2020 · 10 comments
Labels
[ARCH] arm64 This bug impacts ARCH=arm64 [BUG] linux A bug that should be fixed in the mainline kernel. [FIXED][LINUX] 5.6 This bug was fixed in Linux 5.6 Reported upstream This bug was filed on LLVM’s issue tracker, Phabricator, or the kernel mailing list. [TOOL] integrated-as The issue is relevant to LLVM integrated assembler

Comments

@tpimh
Copy link

tpimh commented Mar 8, 2020 

<instantiation>:2:2: error: unrecognized instruction mnemonic
 _ASM_EXTABLE 9999b, 9f
 ^
arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
^

Defined here:

linux/arch/arm64/include/asm/alternative.h

Line 224 in 067ba54

_ASM_EXTABLE 9999b, \label

@tpimh tpimh added [BUG] llvm A bug that should be fixed in upstream LLVM [TOOL] integrated-as The issue is relevant to LLVM integrated assembler [ARCH] arm64 This bug impacts ARCH=arm64 labels Mar 8, 2020
@ihalip
Copy link

ihalip commented Mar 19, 2020 •
edited
Loading

Seems that case matters for clang, but not for as. Fix is dead easy:

diff --git a/arch/arm64/include/asm/alternative.h b/arch/arm64/include/asm/alternative.h
index 324e7d5ab37e..5e5dc05d63a0 100644
--- a/arch/arm64/include/asm/alternative.h
+++ b/arch/arm64/include/asm/alternative.h
@@ -221,7 +221,7 @@ alternative_endif
 
 .macro user_alt, label, oldinstr, newinstr, cond
 9999:  alternative_insn "\oldinstr", "\newinstr", \cond
-       _ASM_EXTABLE 9999b, \label
+       _asm_extable 9999b, \label
 .endm
 
 /*

@ihalip ihalip added the [PATCH] Submitted A patch has been submitted for review label Mar 19, 2020
@ihalip
Copy link

ihalip commented Mar 19, 2020

https://lore.kernel.org/linux-arm-kernel/20200319214530.2046-1-ilie.halip@gmail.com/T/#u

fengguang pushed a commit to 0day-ci/linux that referenced this issue Mar 19, 2020
@ihalip @intel-lab-lkp
arm64: alternative: fix build with clang integrated assembler
9cf0fc2 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
@nickdesaulniers
Copy link
Member

nickdesaulniers commented Mar 19, 2020 •
edited by nathanchance
Loading

Reported upstream, too: https://llvm.org/pr45257

@nickdesaulniers nickdesaulniers added the Reported upstream This bug was filed on LLVM’s issue tracker, Phabricator, or the kernel mailing list. label Mar 19, 2020
@nathanchance
Copy link
Member

https://git.kernel.org/arm64/c/6f5459da2b8736720afdbd67c4bd2d1edba7d0e3

@nathanchance nathanchance added [PATCH] Accepted A submitted patch has been accepted upstream and removed [PATCH] Submitted A patch has been submitted for review labels Mar 20, 2020
ruscur pushed a commit to ruscur/linux that referenced this issue Mar 23, 2020
@ihalip @willdeacon
arm64: alternative: fix build with clang integrated assembler
6f5459d 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
@jcai19
Copy link
Member

jcai19 commented Mar 25, 2020 •
edited
Loading

I also filed an LLVM upstream review request at https://reviews.llvm.org/D76719 to support case-insensitive .macros, although there's disagreement on whether we should add the support. @MaskRay kindly shared some links: http://lists.llvm.org/pipermail/llvm-dev/2020-February/138955.html
http://lists.llvm.org/pipermail/llvm-dev/2020-February/138937.html

@ihalip ihalip added [FIXED][LINUX] development cycle This bug was only present and fixed in a -next or -rc cycle and removed [PATCH] Accepted A submitted patch has been accepted upstream labels Mar 25, 2020
@nickdesaulniers nickdesaulniers added [PATCH] Accepted A submitted patch has been accepted upstream and removed [FIXED][LINUX] development cycle This bug was only present and fixed in a -next or -rc cycle labels Mar 25, 2020
@nickdesaulniers
Copy link
Member

(Removing the [FIXED][LINUX] -next tag; undocumented semantics of it: it's used when we fix an issue before it hits mainline. Since this is a long standing pre-existing issue, we want to use a fixed tag once the patch hits mainline, that specifies the first tag the fix landed in so that when we hit this again on LTS branches we know where to look for the fix).

@ihalip
Copy link

ihalip commented Mar 25, 2020

Sorry for the confustion.

@nickdesaulniers
Copy link
Member

It's my fault; my own undocumented semantics. Join our bi-weekly call in 4 minutes if you wan't to talk more about it!

@nathanchance
Copy link
Member

Merged into mainline: https://git.kernel.org/linus/6f5459da2b8736720afdbd67c4bd2d1edba7d0e3

@nathanchance nathanchance added [FIXED][LINUX] 5.6 This bug was fixed in Linux 5.6 [BUG] linux A bug that should be fixed in the mainline kernel. [BUG] llvm A bug that should be fixed in upstream LLVM and removed [BUG] llvm A bug that should be fixed in upstream LLVM [PATCH] Accepted A submitted patch has been accepted upstream labels Mar 28, 2020
@nathanchance
Copy link
Member

Removing the LLVM label since it seems like this is considered WONTFIX up there (which is fine, there don’t appear to be any other instances of this so far).

ExtremeXT pushed a commit to ExtremeXT/android_kernel_samsung_exynos990 that referenced this issue Apr 8, 2024
@ihalip @ExtremeXT
arm64: alternative: fix build with clang integrated assembler
f501edf 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
ExtremeXT pushed a commit to ExtremeXT/android_kernel_samsung_exynos990 that referenced this issue Apr 8, 2024
@ihalip @ExtremeXT
arm64: alternative: fix build with clang integrated assembler
56eb2b5 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
ExtremeXT pushed a commit to ExtremeXT/android_kernel_samsung_exynos990 that referenced this issue Apr 8, 2024
@ihalip @ExtremeXT
arm64: alternative: fix build with clang integrated assembler
a5531d7 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
svoboda18 pushed a commit to svoboda18/android_blackghost_kernel that referenced this issue Apr 9, 2024
@ihalip @svoboda18
arm64: alternative: fix build with clang integrated assembler
9ecaaf8 
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream.

Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Huawei-Dev pushed a commit to Huawei-Dev/android_kernel_huawei_hi3660 that referenced this issue Apr 11, 2024
@ihalip @Huawei-Dev
arm64: alternative: fix build with clang integrated assembler
d656a4a 
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream.

Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Huawei-Dev pushed a commit to Huawei-Dev/android_kernel_huawei_hi3660 that referenced this issue Apr 11, 2024
@ihalip @Huawei-Dev
arm64: alternative: fix build with clang integrated assembler
0677182 
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream.

Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Royna2544 pushed a commit to eurekadevelopment/Eureka-Kernel-Exynos7885-Q-R-S that referenced this issue Apr 13, 2024
@ihalip @Royna2544
arm64: alternative: fix build with clang integrated assembler
4220be9 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
fcuzzocrea pushed a commit to fcuzzocrea/android_kernel_samsung_universal9830 that referenced this issue Apr 26, 2024
@ihalip @fcuzzocrea
arm64: alternative: fix build with clang integrated assembler
56ee066 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
ghazzor pushed a commit to stufss/kernel_samsung_M215F_CVH1 that referenced this issue May 19, 2024
@ihalip @ghazzor
arm64: alternative: fix build with clang integrated assembler
428fd94 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Huawei-Dev pushed a commit to Huawei-Dev/android_kernel_huawei_hi3660 that referenced this issue May 19, 2024
@ihalip @Huawei-Dev
arm64: alternative: fix build with clang integrated assembler
7224d67 
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream.

Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fcuzzocrea pushed a commit to fcuzzocrea/android_kernel_samsung_universal9830 that referenced this issue May 23, 2024
@ihalip @fcuzzocrea
arm64: alternative: fix build with clang integrated assembler
40f06a4 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
fcuzzocrea pushed a commit to fcuzzocrea/android_kernel_samsung_universal9830 that referenced this issue May 23, 2024
@ihalip @fcuzzocrea
arm64: alternative: fix build with clang integrated assembler
b3dbef1 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Royna2544 pushed a commit to Roynas-Android-Playground/android_kernel_samsung_universal7885 that referenced this issue May 31, 2024
@ihalip @Royna2544
arm64: alternative: fix build with clang integrated assembler
7cd9933 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Royna2544 pushed a commit to Roynas-Android-Playground/android_kernel_samsung_universal7885 that referenced this issue May 31, 2024
@ihalip @Royna2544
arm64: alternative: fix build with clang integrated assembler
e114a55 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
oberdfr pushed a commit to exynos-republic/android_kernel_samsung_universal9830 that referenced this issue Jun 1, 2024
@ihalip @oberdfr
arm64: alternative: fix build with clang integrated assembler
ef307eb 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Royna2544 pushed a commit to Roynas-Android-Playground/android_kernel_samsung_universal7885 that referenced this issue Jun 6, 2024
@ihalip @Royna2544
arm64: alternative: fix build with clang integrated assembler
4694b17 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
ghazzor pushed a commit to stufss/kernel_samsung_M215F_CVH1 that referenced this issue Jun 10, 2024
@ihalip @ghazzor
arm64: alternative: fix build with clang integrated assembler
267bfe3 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Hussein995 pushed a commit to Hussein995/N975F that referenced this issue Jun 13, 2024
@ihalip @Hussein995
arm64: alternative: fix build with clang integrated assembler
0f96e39 
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream.

Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ghazzor pushed a commit to stufss/kernel_samsung_M215F_CVH1 that referenced this issue Jun 14, 2024
@ihalip @ghazzor
arm64: alternative: fix build with clang integrated assembler
19316a1 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
strongreasons pushed a commit to strongreasons/android_kernel_asus_sdm660 that referenced this issue Jun 17, 2024
@ihalip @strongreasons
arm64: alternative: fix build with clang integrated assembler
0b942a2 
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream.

Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kneba <abenkenary3@gmail.com>
Tiktodz pushed a commit to Tiktodz/android_kernel_asus_sdm636 that referenced this issue Jun 18, 2024
@ihalip @Tiktodz
arm64: alternative: fix build with clang integrated assembler
f68de16 
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream.

Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kneba <abenkenary3@gmail.com>
kevios12 pushed a commit to kevios12/android_kernel_samsung_universal7885 that referenced this issue Jul 1, 2024
@ihalip @kevios12
arm64: alternative: fix build with clang integrated assembler
4d014b4 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Tiktodz pushed a commit to Tiktodz/android_kernel_asus_sdm636 that referenced this issue Jul 1, 2024
@ihalip @Tiktodz
arm64: alternative: fix build with clang integrated assembler
637beaa 
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream.

Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kneba <abenkenary3@gmail.com>
kevios12 pushed a commit to kevios12/android_kernel_samsung_universal7885 that referenced this issue Jul 2, 2024
@ihalip @kevios12
arm64: alternative: fix build with clang integrated assembler
4eda8b9 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
kevios12 pushed a commit to kevios12/android_kernel_samsung_universal7885 that referenced this issue Jul 2, 2024
@ihalip @kevios12
arm64: alternative: fix build with clang integrated assembler
a5664fa 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
kevios12 pushed a commit to kevios12/android_kernel_samsung_universal7885 that referenced this issue Jul 2, 2024
@ihalip @kevios12
arm64: alternative: fix build with clang integrated assembler
36d11d5 
Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Tiktodz pushed a commit to Tiktodz/android_kernel_asus_sdm636 that referenced this issue Jul 3, 2024
@ihalip @Tiktodz
arm64: alternative: fix build with clang integrated assembler
81ef1b1 
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream.

Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kneba <abenkenary3@gmail.com>
Tiktodz pushed a commit to Tiktodz/android_kernel_asus_sdm636 that referenced this issue Jul 5, 2024
@ihalip @Tiktodz
arm64: alternative: fix build with clang integrated assembler
cb44d99 
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream.

Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kneba <abenkenary3@gmail.com>
Tiktodz pushed a commit to sotodrom/android_kernel_asus_sdm660 that referenced this issue Jul 7, 2024
@ihalip @Tiktodz
arm64: alternative: fix build with clang integrated assembler
1445e9c 
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream.

Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kneba <abenkenary3@gmail.com>
Tiktodz pushed a commit to Tiktodz/android_kernel_asus_sdm636 that referenced this issue Jul 8, 2024
@ihalip @Tiktodz
arm64: alternative: fix build with clang integrated assembler
50e0efb 
commit 6f5459da2b8736720afdbd67c4bd2d1edba7d0e3 upstream.

Building an arm64 defconfig with clang's integrated assembler, this error
occurs:
    <instantiation>:2:2: error: unrecognized instruction mnemonic
     _ASM_EXTABLE 9999b, 9f
     ^
    arch/arm64/mm/cache.S:50:1: note: while in macro instantiation
    user_alt 9f, "dc cvau, x4", "dc civac, x4", 0
    ^

While GNU as seems fine with case-sensitive macro instantiations, clang
doesn't, so use the actual macro name (_asm_extable) as in the rest of
the file.

Also checked that the generated assembly matches the GCC output.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: 290622efc76e ("arm64: fix "dc cvau" cache operation on errata-affected core")
Link: ClangBuiltLinux/linux#924
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kneba <abenkenary3@gmail.com>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
[ARCH] arm64 This bug impacts ARCH=arm64 [BUG] linux A bug that should be fixed in the mainline kernel. [FIXED][LINUX] 5.6 This bug was fixed in Linux 5.6 Reported upstream This bug was filed on LLVM’s issue tracker, Phabricator, or the kernel mailing list. [TOOL] integrated-as The issue is relevant to LLVM integrated assembler
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
5 participants
@tpimh @nickdesaulniers @ihalip @jcai19 @nathanchance