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Message-Id: <20180116004009.31036-18-ebiederm@xmission.com>
Date: Mon, 15 Jan 2018 18:40:05 -0600
From: "Eric W. Biederman" <ebiederm@...ssion.com>
To: linux-kernel@...r.kernel.org
Cc: Al Viro <viro@...iv.linux.org.uk>, Oleg Nesterov <oleg@...hat.com>,
linux-arch@...r.kernel.org,
"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: [PATCH 18/22] signal/blackfin: Move the blackfin specific si_codes to asm-generic/siginfo.h
Having si_codes in many different files simply encourages duplicate definitions
that can cause problems later. To avoid that merge the blackfin specific si_codes
into uapi/asm-generic/siginfo.h
Update copy_siginfo_to_user to copy with the absence of BUS_MCEERR_AR that blackfin
defines to be something else.
Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
arch/blackfin/include/uapi/asm/siginfo.h | 32 --------------------------------
include/uapi/asm-generic/siginfo.h | 29 +++++++++++++++++++++++++++--
kernel/signal.c | 9 ++++++---
3 files changed, 33 insertions(+), 37 deletions(-)
diff --git a/arch/blackfin/include/uapi/asm/siginfo.h b/arch/blackfin/include/uapi/asm/siginfo.h
index b1db506c8d2e..8c505170f4d0 100644
--- a/arch/blackfin/include/uapi/asm/siginfo.h
+++ b/arch/blackfin/include/uapi/asm/siginfo.h
@@ -15,36 +15,4 @@
#define si_uid16 _sifields._kill._uid
-#define ILL_ILLPARAOP 2 /* illegal opcode combine ********** */
-#define ILL_ILLEXCPT 4 /* unrecoverable exception ********** */
-#define ILL_CPLB_VI 9 /* D/I CPLB protect violation ******** */
-#define ILL_CPLB_MISS 10 /* D/I CPLB miss ******** */
-#define ILL_CPLB_MULHIT 11 /* D/I CPLB multiple hit ******** */
-#undef NSIGILL
-#define NSIGILL 11
-
-/*
- * SIGBUS si_codes
- */
-#define BUS_OPFETCH 4 /* error from instruction fetch ******** */
-#undef NSIGBUS
-#define NSIGBUS 4
-
-/*
- * SIGTRAP si_codes
- */
-#define TRAP_STEP 1 /* single-step breakpoint************* */
-#define TRAP_TRACEFLOW 2 /* trace buffer overflow ************* */
-#define TRAP_WATCHPT 3 /* watchpoint match ************* */
-#define TRAP_ILLTRAP 4 /* illegal trap ************* */
-#undef NSIGTRAP
-#define NSIGTRAP 4
-
-/*
- * SIGSEGV si_codes
- */
-#define SEGV_STACKFLOW 3 /* stack overflow */
-#undef NSIGSEGV
-#define NSIGSEGV 3
-
#endif /* _UAPI_BFIN_SIGINFO_H */
diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h
index 7a268db1c44f..254afc31e3be 100644
--- a/include/uapi/asm-generic/siginfo.h
+++ b/include/uapi/asm-generic/siginfo.h
@@ -179,13 +179,24 @@ typedef struct siginfo {
* SIGILL si_codes
*/
#define ILL_ILLOPC 1 /* illegal opcode */
+#ifdef __bfin__
+# define ILL_ILLPARAOP 2 /* illegal opcode combine */
+#endif
#define ILL_ILLOPN 2 /* illegal operand */
#define ILL_ILLADR 3 /* illegal addressing mode */
#define ILL_ILLTRP 4 /* illegal trap */
+#ifdef __bfin__
+# define ILL_ILLEXCPT 4 /* unrecoverable exception */
+#endif
#define ILL_PRVOPC 5 /* privileged opcode */
#define ILL_PRVREG 6 /* privileged register */
#define ILL_COPROC 7 /* coprocessor error */
#define ILL_BADSTK 8 /* internal stack error */
+#ifdef __bfin__
+# define ILL_CPLB_VI 9 /* D/I CPLB protect violation */
+# define ILL_CPLB_MISS 10 /* D/I CPLB miss */
+# define ILL_CPLB_MULHIT 11 /* D/I CPLB multiple hit */
+#endif
#ifdef __tile__
# define ILL_DBLFLT 9 /* double fault */
# define ILL_HARDWALL 10 /* user networks hardwall violation */
@@ -225,7 +236,11 @@ typedef struct siginfo {
*/
#define SEGV_MAPERR 1 /* address not mapped to object */
#define SEGV_ACCERR 2 /* invalid permissions for mapped object */
-#define SEGV_BNDERR 3 /* failed address bound checks */
+#ifdef __bfin__
+# define SEGV_STACKFLOW 3 /* stack overflow */
+#else
+# define SEGV_BNDERR 3 /* failed address bound checks */
+#endif
#ifdef __ia64__
# define __SEGV_PSTKOVF 4 /* paragraph stack overflow */
#else
@@ -239,8 +254,12 @@ typedef struct siginfo {
#define BUS_ADRALN 1 /* invalid address alignment */
#define BUS_ADRERR 2 /* non-existent physical address */
#define BUS_OBJERR 3 /* object specific hardware error */
+#ifdef __bfin__
+# define BUS_OPFETCH 4 /* error from instruction fetch */
+#else
/* hardware memory error consumed on a machine check: action required */
-#define BUS_MCEERR_AR 4
+# define BUS_MCEERR_AR 4
+#endif
/* hardware memory error detected in process but not consumed: action optional*/
#define BUS_MCEERR_AO 5
#define NSIGBUS 5
@@ -252,6 +271,12 @@ typedef struct siginfo {
#define TRAP_TRACE 2 /* process trace trap */
#define TRAP_BRANCH 3 /* process taken branch trap */
#define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */
+#ifdef __bfin__
+# define TRAP_STEP 1 /* single-step breakpoint */
+# define TRAP_TRACEFLOW 2 /* trace buffer overflow */
+# define TRAP_WATCHPT 3 /* watchpoint match */
+# define TRAP_ILLTRAP 4 /* illegal trap */
+#endif
#define NSIGTRAP 4
/*
diff --git a/kernel/signal.c b/kernel/signal.c
index 47c87b1d0b8a..4c3f4448c5f1 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2770,13 +2770,16 @@ int copy_siginfo_to_user(siginfo_t __user *to, const siginfo_t *from)
err |= __put_user(from->si_flags, &to->si_flags);
err |= __put_user(from->si_isr, &to->si_isr);
#endif
-#ifdef BUS_MCEERR_AO
/*
* Other callers might not initialize the si_lsb field,
* so check explicitly for the right codes here.
*/
- if (from->si_signo == SIGBUS &&
- (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO))
+#ifdef BUS_MCEERR_AR
+ if (from->si_signo == SIGBUS && from->si_code == BUS_MCEERR_AR)
+ err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb);
+#endif
+#ifdef BUS_MCEERR_AO
+ if (from->si_signo == SIGBUS && from->si_code == BUS_MCEERR_AO)
err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb);
#endif
#ifdef SEGV_BNDERR
--
2.14.1
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