diff options
| -rw-r--r-- | arch/arm64/include/asm/neon-intrinsics.h | 4 | ||||
| -rw-r--r-- | arch/arm64/kernel/head.S | 3 | ||||
| -rw-r--r-- | arch/arm64/kernel/ptrace.c | 15 |
3 files changed, 13 insertions, 9 deletions
diff --git a/arch/arm64/include/asm/neon-intrinsics.h b/arch/arm64/include/asm/neon-intrinsics.h index 2ba6c6b9541f..71abfc7612b2 100644 --- a/arch/arm64/include/asm/neon-intrinsics.h +++ b/arch/arm64/include/asm/neon-intrinsics.h @@ -36,4 +36,8 @@ #include <arm_neon.h> #endif +#ifdef CONFIG_CC_IS_CLANG +#pragma clang diagnostic ignored "-Wincompatible-pointer-types" +#endif + #endif /* __ASM_NEON_INTRINSICS_H */ diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index 15d79a8e5e5e..eecf7927dab0 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -539,8 +539,7 @@ set_hcr: /* GICv3 system register access */ mrs x0, id_aa64pfr0_el1 ubfx x0, x0, #24, #4 - cmp x0, #1 - b.ne 3f + cbz x0, 3f mrs_s x0, SYS_ICC_SRE_EL2 orr x0, x0, #ICC_SRE_EL2_SRE // Set ICC_SRE_EL2.SRE==1 diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index 9dce33b0e260..ddaea0fd2fa4 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -1702,19 +1702,20 @@ void syscall_trace_exit(struct pt_regs *regs) } /* - * SPSR_ELx bits which are always architecturally RES0 per ARM DDI 0487C.a - * We also take into account DIT (bit 24), which is not yet documented, and - * treat PAN and UAO as RES0 bits, as they are meaningless at EL0, and may be - * allocated an EL0 meaning in future. + * SPSR_ELx bits which are always architecturally RES0 per ARM DDI 0487D.a. + * We permit userspace to set SSBS (AArch64 bit 12, AArch32 bit 23) which is + * not described in ARM DDI 0487D.a. + * We treat PAN and UAO as RES0 bits, as they are meaningless at EL0, and may + * be allocated an EL0 meaning in future. * Userspace cannot use these until they have an architectural meaning. * Note that this follows the SPSR_ELx format, not the AArch32 PSR format. * We also reserve IL for the kernel; SS is handled dynamically. */ #define SPSR_EL1_AARCH64_RES0_BITS \ - (GENMASK_ULL(63,32) | GENMASK_ULL(27, 25) | GENMASK_ULL(23, 22) | \ - GENMASK_ULL(20, 10) | GENMASK_ULL(5, 5)) + (GENMASK_ULL(63, 32) | GENMASK_ULL(27, 25) | GENMASK_ULL(23, 22) | \ + GENMASK_ULL(20, 13) | GENMASK_ULL(11, 10) | GENMASK_ULL(5, 5)) #define SPSR_EL1_AARCH32_RES0_BITS \ - (GENMASK_ULL(63,32) | GENMASK_ULL(23, 22) | GENMASK_ULL(20,20)) + (GENMASK_ULL(63, 32) | GENMASK_ULL(22, 22) | GENMASK_ULL(20, 20)) static int valid_compat_regs(struct user_pt_regs *regs) { |