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authorLinus Torvalds <torvalds@linux-foundation.org>2016-02-25 22:36:33 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2016-02-25 22:36:33 -0500
commit70d070f56a24b0d966aee547b6c51d09e9185b63 (patch)
tree0899067a56692a9646de54839b50fdc1d22f412a
parent81904dbbb45490642d16fb1343f95dc0d0eec93f (diff)
parent1b17cb796f5d40ffa239c6926385abd83a77a49b (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 bugfixes from Martin Schwidefsky: "Two critical bug fixes for the signal handling" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/fpu: signals vs. floating point control register s390/compat: correct restore of high gprs on signal return
-rw-r--r--arch/s390/include/asm/fpu/internal.h2
-rw-r--r--arch/s390/kernel/compat_signal.c2
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/include/asm/fpu/internal.h b/arch/s390/include/asm/fpu/internal.h
index ea91ddfe54eb..629c90865a07 100644
--- a/arch/s390/include/asm/fpu/internal.h
+++ b/arch/s390/include/asm/fpu/internal.h
@@ -40,6 +40,7 @@ static inline void convert_fp_to_vx(__vector128 *vxrs, freg_t *fprs)
40static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu) 40static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu)
41{ 41{
42 fpregs->pad = 0; 42 fpregs->pad = 0;
43 fpregs->fpc = fpu->fpc;
43 if (MACHINE_HAS_VX) 44 if (MACHINE_HAS_VX)
44 convert_vx_to_fp((freg_t *)&fpregs->fprs, fpu->vxrs); 45 convert_vx_to_fp((freg_t *)&fpregs->fprs, fpu->vxrs);
45 else 46 else
@@ -49,6 +50,7 @@ static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu)
49 50
50static inline void fpregs_load(_s390_fp_regs *fpregs, struct fpu *fpu) 51static inline void fpregs_load(_s390_fp_regs *fpregs, struct fpu *fpu)
51{ 52{
53 fpu->fpc = fpregs->fpc;
52 if (MACHINE_HAS_VX) 54 if (MACHINE_HAS_VX)
53 convert_fp_to_vx(fpu->vxrs, (freg_t *)&fpregs->fprs); 55 convert_fp_to_vx(fpu->vxrs, (freg_t *)&fpregs->fprs);
54 else 56 else
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index 66c94417c0ba..4af60374eba0 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -271,7 +271,7 @@ static int restore_sigregs_ext32(struct pt_regs *regs,
271 271
272 /* Restore high gprs from signal stack */ 272 /* Restore high gprs from signal stack */
273 if (__copy_from_user(&gprs_high, &sregs_ext->gprs_high, 273 if (__copy_from_user(&gprs_high, &sregs_ext->gprs_high,
274 sizeof(&sregs_ext->gprs_high))) 274 sizeof(sregs_ext->gprs_high)))
275 return -EFAULT; 275 return -EFAULT;
276 for (i = 0; i < NUM_GPRS; i++) 276 for (i = 0; i < NUM_GPRS; i++)
277 *(__u32 *)&regs->gprs[i] = gprs_high[i]; 277 *(__u32 *)&regs->gprs[i] = gprs_high[i];