linux-kernel - [tip: x86/urgent] x86/entry: Fix vectors to IDTENTRY_SYSVEC for CONFIG

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Date:   Thu, 16 Jul 2020 15:30:34 -0000
From:   "tip-bot2 for Sedat Dilek" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Nick Desaulniers <ndesaulniers@...gle.com>,
        Sedat Dilek <sedat.dilek@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Nathan Chancellor <natechancellor@...il.com>,
        Wei Liu <wei.liu@...nel.org>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: x86/urgent] x86/entry: Fix vectors to IDTENTRY_SYSVEC for CONFIG_HYPERV

The following commit has been merged into the x86/urgent branch of tip:

Commit-ID:     5769fe26f389b0002ed48fd16d642a1d86edaf79
Gitweb:        https://git.kernel.org/tip/5769fe26f389b0002ed48fd16d642a1d86edaf79
Author:        Sedat Dilek <sedat.dilek@...il.com>
AuthorDate:    Tue, 14 Jul 2020 21:47:40 +02:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Thu, 16 Jul 2020 17:25:10 +02:00

x86/entry: Fix vectors to IDTENTRY_SYSVEC for CONFIG_HYPERV

When assembling with Clang via `make LLVM_IAS=1` and CONFIG_HYPERV enabled,
we observe the following error:

<instantiation>:9:6: error: expected absolute expression
 .if HYPERVISOR_REENLIGHTENMENT_VECTOR == 3
     ^
<instantiation>:1:1: note: while in macro instantiation
idtentry HYPERVISOR_REENLIGHTENMENT_VECTOR asm_sysvec_hyperv_reenlightenment sysvec_hyperv_reenlightenment has_error_code=0
^
./arch/x86/include/asm/idtentry.h:627:1: note: while in macro instantiation
idtentry_sysvec HYPERVISOR_REENLIGHTENMENT_VECTOR sysvec_hyperv_reenlightenment;
^
<instantiation>:9:6: error: expected absolute expression
 .if HYPERVISOR_STIMER0_VECTOR == 3
     ^
<instantiation>:1:1: note: while in macro instantiation
idtentry HYPERVISOR_STIMER0_VECTOR asm_sysvec_hyperv_stimer0 sysvec_hyperv_stimer0 has_error_code=0
^
./arch/x86/include/asm/idtentry.h:628:1: note: while in macro instantiation
idtentry_sysvec HYPERVISOR_STIMER0_VECTOR sysvec_hyperv_stimer0;

This is caused by typos in arch/x86/include/asm/idtentry.h:

HYPERVISOR_REENLIGHTENMENT_VECTOR -> HYPERV_REENLIGHTENMENT_VECTOR
HYPERVISOR_STIMER0_VECTOR         -> HYPERV_STIMER0_VECTOR

For more details see ClangBuiltLinux issue #1088.

Fixes: a16be368dd3f ("x86/entry: Convert various hypervisor vectors to IDTENTRY_SYSVEC")
Suggested-by: Nick Desaulniers <ndesaulniers@...gle.com>
Signed-off-by: Sedat Dilek <sedat.dilek@...il.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Nathan Chancellor <natechancellor@...il.com>
Reviewed-by: Wei Liu <wei.liu@...nel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/1088
Link: https://github.com/ClangBuiltLinux/linux/issues/1043
Link: https://lore.kernel.org/patchwork/patch/1272115/
Link: https://lkml.kernel.org/r/20200714194740.4548-1-sedat.dilek@gmail.com

---
 arch/x86/include/asm/idtentry.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/idtentry.h b/arch/x86/include/asm/idtentry.h
index 5efaaed..80d3b30 100644
--- a/arch/x86/include/asm/idtentry.h
+++ b/arch/x86/include/asm/idtentry.h
@@ -624,8 +624,8 @@ DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_NESTED_VECTOR,	sysvec_kvm_posted_intr_nested
 
 #if IS_ENABLED(CONFIG_HYPERV)
 DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR,	sysvec_hyperv_callback);
-DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_REENLIGHTENMENT_VECTOR,	sysvec_hyperv_reenlightenment);
-DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_STIMER0_VECTOR,	sysvec_hyperv_stimer0);
+DECLARE_IDTENTRY_SYSVEC(HYPERV_REENLIGHTENMENT_VECTOR,	sysvec_hyperv_reenlightenment);
+DECLARE_IDTENTRY_SYSVEC(HYPERV_STIMER0_VECTOR,	sysvec_hyperv_stimer0);
 #endif
 
 #if IS_ENABLED(CONFIG_ACRN_GUEST)