From: Dave.Martin@arm.com (Dave Martin)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH v2 20/41] arm64/sve: traps: Add descriptive string for SVE exceptions
Date: Wed, 22 Mar 2017 14:50:50 +0000 [thread overview]
Message-ID: <1490194274-30569-21-git-send-email-Dave.Martin@arm.com> (raw)
In-Reply-To: <1490194274-30569-1-git-send-email-Dave.Martin@arm.com>
In preparation for SVE trapping in userspace, let's print something
relevant instead of "UNREGOCNIZED EC" when an unhandled SVE
exception occurs.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
---
arch/arm64/include/asm/esr.h | 3 ++-
arch/arm64/kernel/traps.c | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/esr.h b/arch/arm64/include/asm/esr.h
index d14c478..87729f3 100644
--- a/arch/arm64/include/asm/esr.h
+++ b/arch/arm64/include/asm/esr.h
@@ -42,7 +42,8 @@
#define ESR_ELx_EC_HVC64 (0x16)
#define ESR_ELx_EC_SMC64 (0x17)
#define ESR_ELx_EC_SYS64 (0x18)
-/* Unallocated EC: 0x19 - 0x1E */
+#define ESR_ELx_EC_SVE (0x19)
+/* Unallocated EC: 0x1A - 0x1E */
#define ESR_ELx_EC_IMP_DEF (0x1f)
#define ESR_ELx_EC_IABT_LOW (0x20)
#define ESR_ELx_EC_IABT_CUR (0x21)
diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c
index e52be6a..e2e7c3c 100644
--- a/arch/arm64/kernel/traps.c
+++ b/arch/arm64/kernel/traps.c
@@ -587,6 +587,7 @@ static const char *esr_class_str[] = {
[ESR_ELx_EC_HVC64] = "HVC (AArch64)",
[ESR_ELx_EC_SMC64] = "SMC (AArch64)",
[ESR_ELx_EC_SYS64] = "MSR/MRS (AArch64)",
+ [ESR_ELx_EC_SVE] = "SVE",
[ESR_ELx_EC_IMP_DEF] = "EL3 IMP DEF",
[ESR_ELx_EC_IABT_LOW] = "IABT (lower EL)",
[ESR_ELx_EC_IABT_CUR] = "IABT (current EL)",
--
2.1.4
next prev parent reply other threads:[~2017-03-22 14:50 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-22 14:50 [RFC PATCH v2 00/41] Scalable Vector Extension (SVE) core support Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 01/41] arm64: signal: Refactor sigcontext parsing in rt_sigreturn Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 02/41] arm64: signal: factor frame layout and population into separate passes Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 03/41] arm64: signal: factor out signal frame record allocation Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 04/41] arm64: signal: Allocate extra sigcontext space as needed Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 05/41] arm64: signal: Parse extra_context during sigreturn Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 06/41] arm64: efi: Add missing Kconfig dependency on KERNEL_MODE_NEON Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 07/41] arm64/sve: Allow kernel-mode NEON to be disabled in Kconfig Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 08/41] arm64/sve: Low-level save/restore code Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 09/41] arm64/sve: Boot-time feature detection and reporting Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 10/41] arm64/sve: Boot-time feature enablement Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 11/41] arm64/sve: Expand task_struct for Scalable Vector Extension state Dave Martin
2017-03-22 16:20 ` Mark Rutland
2017-03-23 10:49 ` Dave Martin
2017-03-23 11:26 ` Mark Rutland
2017-03-22 14:50 ` [RFC PATCH v2 12/41] arm64/sve: Save/restore SVE state on context switch paths Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 13/41] arm64/sve: [BROKEN] Basic support for KERNEL_MODE_NEON Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 14/41] Revert "arm64/sve: Allow kernel-mode NEON to be disabled in Kconfig" Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 15/41] arm64/sve: Restore working FPSIMD save/restore around signals Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 16/41] arm64/sve: signal: Add SVE state record to sigcontext Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 17/41] arm64/sve: signal: Dump Scalable Vector Extension registers to user stack Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 18/41] arm64/sve: signal: Restore FPSIMD/SVE state in rt_sigreturn Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 19/41] arm64/sve: Avoid corruption when replacing the SVE state Dave Martin
2017-03-22 14:50 ` Dave Martin [this message]
2017-03-22 14:50 ` [RFC PATCH v2 21/41] arm64/sve: Enable SVE on demand for userspace Dave Martin
2017-03-22 16:48 ` Mark Rutland
2017-03-23 11:24 ` Dave Martin
2017-03-23 11:30 ` Suzuki K Poulose
2017-03-23 11:52 ` Mark Rutland
2017-03-23 12:07 ` Dave Martin
2017-03-23 13:40 ` Mark Rutland
2017-03-23 13:45 ` Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 22/41] arm64/sve: Implement FPSIMD-only context for tasks not using SVE Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 23/41] arm64/sve: Move ZEN handling to the common task_fpsimd_load() path Dave Martin
2017-03-22 16:55 ` Mark Rutland
2017-03-23 11:52 ` Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 24/41] arm64/sve: Discard SVE state on system call Dave Martin
2017-03-22 17:03 ` Mark Rutland
2017-03-23 11:59 ` Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 25/41] arm64/sve: Avoid preempt_disable() during sigreturn Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 26/41] arm64/sve: Avoid stale user register state after SVE access exception Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 27/41] arm64/sve: ptrace support Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 28/41] arm64: KVM: Treat SVE use by guests as undefined instruction execution Dave Martin
2017-03-22 17:06 ` Mark Rutland
2017-03-23 12:10 ` Dave Martin
2017-03-22 14:50 ` [RFC PATCH v2 29/41] prctl: Add skeleton for PR_SVE_{SET, GET}_VL controls Dave Martin
2017-03-22 14:51 ` [RFC PATCH v2 30/41] arm64/sve: Track vector length for each task Dave Martin
2017-03-22 14:51 ` [RFC PATCH v2 31/41] arm64/sve: Set CPU vector length to match current task Dave Martin
2017-03-22 14:51 ` [RFC PATCH v2 32/41] arm64/sve: Factor out clearing of tasks' SVE regs Dave Martin
2017-03-22 14:51 ` [RFC PATCH v2 33/41] arm64/sve: Wire up vector length control prctl() calls Dave Martin
2017-03-22 14:51 ` [RFC PATCH v2 34/41] arm64/sve: Disallow VL setting for individual threads by default Dave Martin
2017-03-22 14:51 ` [RFC PATCH v2 35/41] arm64/sve: Add vector length inheritance control Dave Martin
2017-03-22 14:51 ` [RFC PATCH v2 36/41] arm64/sve: ptrace: Wire up vector length control and reporting Dave Martin
2017-03-22 14:51 ` [RFC PATCH v2 37/41] arm64/sve: Enable default vector length control via procfs Dave Martin
2017-03-22 14:51 ` [RFC PATCH v2 38/41] arm64/sve: Detect SVE via the cpufeature framework Dave Martin
2017-03-23 14:11 ` Suzuki K Poulose
2017-03-23 14:37 ` Dave Martin
2017-03-23 14:43 ` Dave Martin
2017-03-22 14:51 ` [RFC PATCH v2 39/41] arm64/sve: Migrate to cpucap based detection for runtime SVE code Dave Martin
2017-03-22 14:51 ` [RFC PATCH v2 40/41] arm64/sve: Allocate task SVE context storage dynamically Dave Martin
2017-03-22 14:51 ` [RFC PATCH v2 41/41] arm64/sve: Documentation: Add overview of the SVE userspace ABI Dave Martin
2017-03-31 15:28 ` [RFC PATCH v2 00/41] Scalable Vector Extension (SVE) core support Ard Biesheuvel
2017-04-03 9:45 ` Dave Martin
2017-04-03 10:01 ` Ard Biesheuvel
2017-04-03 10:51 ` Dave Martin
2017-04-03 10:55 ` Ard Biesheuvel
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