linux-kernel - [PATCH 2/2] x86/signal/compat: Move sigaction_compat_abi() to signal

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Date:   Mon, 19 Dec 2022 14:39:04 -0500
From:   Brian Gerst <brgerst@...il.com>
To:     linux-kernel@...r.kernel.org, x86@...nel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        Brian Gerst <brgerst@...il.com>
Subject: [PATCH 2/2] x86/signal/compat: Move sigaction_compat_abi() to signal_64.c

Signed-off-by: Brian Gerst <brgerst@...il.com>
---
 arch/x86/kernel/Makefile        |  1 -
 arch/x86/kernel/signal_64.c     | 13 +++++++++++++
 arch/x86/kernel/signal_compat.c | 15 ---------------
 3 files changed, 13 insertions(+), 16 deletions(-)
 delete mode 100644 arch/x86/kernel/signal_compat.c

diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 96d51bbc2bd4..dd61752f4c96 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -45,7 +45,6 @@ obj-y			+= head$(BITS).o
 obj-y			+= ebda.o
 obj-y			+= platform-quirks.o
 obj-y			+= process_$(BITS).o signal.o signal_$(BITS).o
-obj-$(CONFIG_COMPAT)	+= signal_compat.o
 obj-y			+= traps.o idt.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
 obj-y			+= time.o ioport.o dumpstack.o nmi.o
 obj-$(CONFIG_MODIFY_LDT_SYSCALL)	+= ldt.o
diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c
index 9eea4e8f12ee..13a1e6083837 100644
--- a/arch/x86/kernel/signal_64.c
+++ b/arch/x86/kernel/signal_64.c
@@ -382,6 +382,19 @@ COMPAT_SYSCALL_DEFINE0(x32_rt_sigreturn)
 }
 #endif /* CONFIG_X86_X32_ABI */
 
+#ifdef CONFIG_COMPAT
+void sigaction_compat_abi(struct k_sigaction *act, struct k_sigaction *oact)
+{
+	if (!act)
+		return;
+
+	if (in_ia32_syscall())
+		act->sa.sa_flags |= SA_IA32_ABI;
+	if (in_x32_syscall())
+		act->sa.sa_flags |= SA_X32_ABI;
+}
+#endif /* CONFIG_COMPAT */
+
 /*
 * If adding a new si_code, there is probably new data in
 * the siginfo.  Make sure folks bumping the si_code
diff --git a/arch/x86/kernel/signal_compat.c b/arch/x86/kernel/signal_compat.c
deleted file mode 100644
index c4e9b85f1869..000000000000
--- a/arch/x86/kernel/signal_compat.c
+++ /dev/null
@@ -1,15 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/compat.h>
-#include <linux/uaccess.h>
-#include <linux/ptrace.h>
-
-void sigaction_compat_abi(struct k_sigaction *act, struct k_sigaction *oact)
-{
-	if (!act)
-		return;
-
-	if (in_ia32_syscall())
-		act->sa.sa_flags |= SA_IA32_ABI;
-	if (in_x32_syscall())
-		act->sa.sa_flags |= SA_X32_ABI;
-}
-- 
2.38.1