diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-03-01 09:02:26 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-03-01 09:02:26 +0100 |
| commit | 0871d5a66da5c41151e0896a90298b163e42f2e0 (patch) | |
| tree | 1ba71fab9016cb28bb9d18ffd62b6b744f2f761c /arch/arm64/kernel/traps.c | |
| parent | e22af0be2cf654bb225f19750c6b9aab1627dc9e (diff) | |
| parent | 2d6be4abf514fc26c83d239c7f31da1f95e4a31d (diff) | |
Merge branch 'linus' into WIP.x86/boot, to fix up conflicts and to pick up updates
Conflicts:
arch/x86/xen/setup.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/traps.c')
| -rw-r--r-- | arch/arm64/kernel/traps.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 659b2e6b6cf7..7d47c2cdfd93 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -466,7 +466,7 @@ static void user_cache_maint_handler(unsigned int esr, struct pt_regs *regs) int crm = (esr & ESR_ELx_SYS64_ISS_CRM_MASK) >> ESR_ELx_SYS64_ISS_CRM_SHIFT; int ret = 0; - address = (rt == 31) ? 0 : regs->regs[rt]; + address = pt_regs_read_reg(regs, rt); switch (crm) { case ESR_ELx_SYS64_ISS_CRM_DC_CVAU: /* DC CVAU, gets promoted */ @@ -495,8 +495,10 @@ static void user_cache_maint_handler(unsigned int esr, struct pt_regs *regs) static void ctr_read_handler(unsigned int esr, struct pt_regs *regs) { int rt = (esr & ESR_ELx_SYS64_ISS_RT_MASK) >> ESR_ELx_SYS64_ISS_RT_SHIFT; + unsigned long val = arm64_ftr_reg_user_value(&arm64_ftr_reg_ctrel0); + + pt_regs_write_reg(regs, rt, val); - regs->regs[rt] = arm64_ftr_reg_ctrel0.sys_val; regs->pc += 4; } @@ -531,7 +533,12 @@ asmlinkage void __exception do_sysinstr(unsigned int esr, struct pt_regs *regs) return; } - force_signal_inject(SIGILL, ILL_ILLOPC, regs, 0); + /* + * New SYS instructions may previously have been undefined at EL0. Fall + * back to our usual undefined instruction handler so that we handle + * these consistently. + */ + do_undefinstr(regs); } long compat_arm_syscall(struct pt_regs *regs); |