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authorLinus Torvalds <torvalds@linux-foundation.org>2017-07-06 19:15:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-06 19:15:23 -0700
commit2c669275dc3245e2866a0eea15bda8ec8d1ab8db (patch)
treea977377155b3199333f9f1a1bcdbb351f52ce124 /arch/s390
parent6e6c5b960644125b6f2fc2cd04e62bff0771923e (diff)
parent0c6b2975a9a7a86cbdce0054b0b9690ed6afc0fe (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull more s390 updates from Martin Schwidefsky: - The fixup for the blk-mq clash with the scm driver - An improvement for the dasd driver in regard to raw I/O - Bug fixes and cleanup * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: Update my email address s390/syscalls: Fix out of bounds arguments access s390/vfio_ccw: remove unused variable s390/dasd: remove unneeded code s390/crash: Remove unused KEXEC_NOTE_BYTES s390/zcrypt: Fix missing newlines at some debug feature messages. s390/dasd: Make raw I/O usable without prefix support s390/dasd: Rename dasd_raw_build_cp() s390/dasd: Refactor prefix_LRE() and related functions s390: fix up for "blk-mq: switch ->queue_rq return value to blk_status_t"
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/kexec.h18
-rw-r--r--arch/s390/include/asm/syscall.h6
2 files changed, 6 insertions, 18 deletions
diff --git a/arch/s390/include/asm/kexec.h b/arch/s390/include/asm/kexec.h
index 2f924bc30e35..dccf24ee26d3 100644
--- a/arch/s390/include/asm/kexec.h
+++ b/arch/s390/include/asm/kexec.h
@@ -41,24 +41,6 @@
/* The native architecture */
#define KEXEC_ARCH KEXEC_ARCH_S390
-/*
- * Size for s390x ELF notes per CPU
- *
- * Seven notes plus zero note at the end: prstatus, fpregset, timer,
- * tod_cmp, tod_reg, control regs, and prefix
- */
-#define KEXEC_NOTE_BYTES \
- (ALIGN(sizeof(struct elf_note), 4) * 8 + \
- ALIGN(sizeof("CORE"), 4) * 7 + \
- ALIGN(sizeof(struct elf_prstatus), 4) + \
- ALIGN(sizeof(elf_fpregset_t), 4) + \
- ALIGN(sizeof(u64), 4) + \
- ALIGN(sizeof(u64), 4) + \
- ALIGN(sizeof(u32), 4) + \
- ALIGN(sizeof(u64) * 16, 4) + \
- ALIGN(sizeof(u32), 4) \
- )
-
/* Provide a dummy definition to avoid build failures. */
static inline void crash_setup_regs(struct pt_regs *newregs,
struct pt_regs *oldregs) { }
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h
index 6ba0bf928909..6bc941be6921 100644
--- a/arch/s390/include/asm/syscall.h
+++ b/arch/s390/include/asm/syscall.h
@@ -64,6 +64,12 @@ static inline void syscall_get_arguments(struct task_struct *task,
{
unsigned long mask = -1UL;
+ /*
+ * No arguments for this syscall, there's nothing to do.
+ */
+ if (!n)
+ return;
+
BUG_ON(i + n > 6);
#ifdef CONFIG_COMPAT
if (test_tsk_thread_flag(task, TIF_31BIT))