summaryrefslogtreecommitdiff
path: root/arch/arm64/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm64/kernel')
-rw-r--r--arch/arm64/kernel/Makefile2
-rw-r--r--arch/arm64/kernel/armv8_deprecated.c23
-rw-r--r--arch/arm64/kernel/cpufeature.c204
-rw-r--r--arch/arm64/kernel/cpuinfo.c12
-rw-r--r--arch/arm64/kernel/debug-monitors.c5
-rw-r--r--arch/arm64/kernel/entry-fpsimd.S17
-rw-r--r--arch/arm64/kernel/entry-ftrace.S12
-rw-r--r--arch/arm64/kernel/entry.S128
-rw-r--r--arch/arm64/kernel/fpsimd.c908
-rw-r--r--arch/arm64/kernel/head.S30
-rw-r--r--arch/arm64/kernel/hibernate.c5
-rw-r--r--arch/arm64/kernel/io.c12
-rw-r--r--arch/arm64/kernel/machine_kexec.c4
-rw-r--r--arch/arm64/kernel/process.c64
-rw-r--r--arch/arm64/kernel/ptrace.c280
-rw-r--r--arch/arm64/kernel/setup.c15
-rw-r--r--arch/arm64/kernel/signal.c179
-rw-r--r--arch/arm64/kernel/signal32.c2
-rw-r--r--arch/arm64/kernel/smp.c18
-rw-r--r--arch/arm64/kernel/suspend.c8
-rw-r--r--arch/arm64/kernel/traps.c109
-rw-r--r--arch/arm64/kernel/vdso/gettimeofday.S2
22 files changed, 1746 insertions, 293 deletions
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index 0029e13adb59..8265dd790895 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -11,8 +11,6 @@ CFLAGS_REMOVE_ftrace.o = -pg
CFLAGS_REMOVE_insn.o = -pg
CFLAGS_REMOVE_return_address.o = -pg
-CFLAGS_setup.o = -DUTS_MACHINE='"$(UTS_MACHINE)"'
-
# Object file lists.
arm64-obj-y := debug-monitors.o entry.o irq.o fpsimd.o \
entry-fpsimd.o process.o ptrace.o setup.o signal.o \
diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c
index d06fbe4cd38d..c33b5e4010ab 100644
--- a/arch/arm64/kernel/armv8_deprecated.c
+++ b/arch/arm64/kernel/armv8_deprecated.c
@@ -228,15 +228,7 @@ ret:
return ret;
}
-static struct ctl_table ctl_abi[] = {
- {
- .procname = "abi",
- .mode = 0555,
- },
- { }
-};
-
-static void __init register_insn_emulation_sysctl(struct ctl_table *table)
+static void __init register_insn_emulation_sysctl(void)
{
unsigned long flags;
int i = 0;
@@ -262,8 +254,7 @@ static void __init register_insn_emulation_sysctl(struct ctl_table *table)
}
raw_spin_unlock_irqrestore(&insn_emulation_lock, flags);
- table->child = insns_sysctl;
- register_sysctl_table(table);
+ register_sysctl("abi", insns_sysctl);
}
/*
@@ -431,7 +422,7 @@ ret:
pr_warn_ratelimited("\"%s\" (%ld) uses obsolete SWP{B} instruction at 0x%llx\n",
current->comm, (unsigned long)current->pid, regs->pc);
- regs->pc += 4;
+ arm64_skip_faulting_instruction(regs, 4);
return 0;
fault:
@@ -512,7 +503,7 @@ ret:
pr_warn_ratelimited("\"%s\" (%ld) uses deprecated CP15 Barrier instruction at 0x%llx\n",
current->comm, (unsigned long)current->pid, regs->pc);
- regs->pc += 4;
+ arm64_skip_faulting_instruction(regs, 4);
return 0;
}
@@ -586,14 +577,14 @@ static int compat_setend_handler(struct pt_regs *regs, u32 big_endian)
static int a32_setend_handler(struct pt_regs *regs, u32 instr)
{
int rc = compat_setend_handler(regs, (instr >> 9) & 1);
- regs->pc += 4;
+ arm64_skip_faulting_instruction(regs, 4);
return rc;
}
static int t16_setend_handler(struct pt_regs *regs, u32 instr)
{
int rc = compat_setend_handler(regs, (instr >> 3) & 1);
- regs->pc += 2;
+ arm64_skip_faulting_instruction(regs, 2);
return rc;
}
@@ -644,7 +635,7 @@ static int __init armv8_deprecated_init(void)
cpuhp_setup_state_nocalls(CPUHP_AP_ARM64_ISNDEP_STARTING,
"arm64/isndep:starting",
run_all_insn_set_hw_mode, NULL);
- register_insn_emulation_sysctl(ctl_abi);
+ register_insn_emulation_sysctl();
return 0;
}
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 21e2c95d24e7..c5ba0097887f 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -27,6 +27,7 @@
#include <asm/cpu.h>
#include <asm/cpufeature.h>
#include <asm/cpu_ops.h>
+#include <asm/fpsimd.h>
#include <asm/mmu_context.h>
#include <asm/processor.h>
#include <asm/sysreg.h>
@@ -51,6 +52,21 @@ unsigned int compat_elf_hwcap2 __read_mostly;
DECLARE_BITMAP(cpu_hwcaps, ARM64_NCAPS);
EXPORT_SYMBOL(cpu_hwcaps);
+/*
+ * Flag to indicate if we have computed the system wide
+ * capabilities based on the boot time active CPUs. This
+ * will be used to determine if a new booting CPU should
+ * go through the verification process to make sure that it
+ * supports the system capabilities, without using a hotplug
+ * notifier.
+ */
+static bool sys_caps_initialised;
+
+static inline void set_sys_caps_initialised(void)
+{
+ sys_caps_initialised = true;
+}
+
static int dump_cpu_hwcaps(struct notifier_block *self, unsigned long v, void *p)
{
/* file-wide pr_fmt adds "CPU features: " prefix */
@@ -107,7 +123,11 @@ cpufeature_pan_not_uao(const struct arm64_cpu_capabilities *entry, int __unused)
* sync with the documentation of the CPU feature register ABI.
*/
static const struct arm64_ftr_bits ftr_id_aa64isar0[] = {
- ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64ISAR0_RDM_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_DP_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_SM4_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_SM3_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_SHA3_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_RDM_SHIFT, 4, 0),
ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_ATOMICS_SHIFT, 4, 0),
ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_CRC32_SHIFT, 4, 0),
ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_SHA2_SHIFT, 4, 0),
@@ -117,34 +137,35 @@ static const struct arm64_ftr_bits ftr_id_aa64isar0[] = {
};
static const struct arm64_ftr_bits ftr_id_aa64isar1[] = {
- ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64ISAR1_LRCPC_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64ISAR1_FCMA_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64ISAR1_JSCVT_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64ISAR1_DPB_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR1_LRCPC_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR1_FCMA_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR1_JSCVT_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR1_DPB_SHIFT, 4, 0),
ARM64_FTR_END,
};
static const struct arm64_ftr_bits ftr_id_aa64pfr0[] = {
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64PFR0_GIC_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_SVE_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_GIC_SHIFT, 4, 0),
S_ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_ASIMD_SHIFT, 4, ID_AA64PFR0_ASIMD_NI),
S_ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_FP_SHIFT, 4, ID_AA64PFR0_FP_NI),
/* Linux doesn't care about the EL3 */
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64PFR0_EL3_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64PFR0_EL2_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64PFR0_EL1_SHIFT, 4, ID_AA64PFR0_EL1_64BIT_ONLY),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64PFR0_EL0_SHIFT, 4, ID_AA64PFR0_EL0_64BIT_ONLY),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL3_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL2_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL1_SHIFT, 4, ID_AA64PFR0_EL1_64BIT_ONLY),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_EL0_SHIFT, 4, ID_AA64PFR0_EL0_64BIT_ONLY),
ARM64_FTR_END,
};
static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = {
- S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_TGRAN4_SHIFT, 4, ID_AA64MMFR0_TGRAN4_NI),
- S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_TGRAN64_SHIFT, 4, ID_AA64MMFR0_TGRAN64_NI),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_TGRAN16_SHIFT, 4, ID_AA64MMFR0_TGRAN16_NI),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_BIGENDEL0_SHIFT, 4, 0),
+ S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_TGRAN4_SHIFT, 4, ID_AA64MMFR0_TGRAN4_NI),
+ S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_TGRAN64_SHIFT, 4, ID_AA64MMFR0_TGRAN64_NI),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_TGRAN16_SHIFT, 4, ID_AA64MMFR0_TGRAN16_NI),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_BIGENDEL0_SHIFT, 4, 0),
/* Linux shouldn't care about secure memory */
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64MMFR0_SNSMEM_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_BIGENDEL_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_ASID_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_SNSMEM_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_BIGENDEL_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_ASID_SHIFT, 4, 0),
/*
* Differing PARange is fine as long as all peripherals and memory are mapped
* within the minimum PARange of all CPUs
@@ -155,20 +176,20 @@ static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = {
static const struct arm64_ftr_bits ftr_id_aa64mmfr1[] = {
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_PAN_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_LOR_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_HPD_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_VHE_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_VMIDBITS_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_HADBS_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_LOR_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_HPD_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_VHE_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_VMIDBITS_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_HADBS_SHIFT, 4, 0),
ARM64_FTR_END,
};
static const struct arm64_ftr_bits ftr_id_aa64mmfr2[] = {
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_LVA_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_IESB_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_LSM_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_UAO_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_CNP_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_LVA_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_IESB_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_LSM_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_UAO_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR2_CNP_SHIFT, 4, 0),
ARM64_FTR_END,
};
@@ -193,14 +214,14 @@ struct arm64_ftr_reg arm64_ftr_reg_ctrel0 = {
};
static const struct arm64_ftr_bits ftr_id_mmfr0[] = {
- S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 28, 4, 0xf), /* InnerShr */
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 24, 4, 0), /* FCSE */
+ S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 28, 4, 0xf), /* InnerShr */
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 24, 4, 0), /* FCSE */
ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, 20, 4, 0), /* AuxReg */
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 16, 4, 0), /* TCM */
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 12, 4, 0), /* ShareLvl */
- S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 8, 4, 0xf), /* OuterShr */
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 4, 4, 0), /* PMSA */
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 0, 4, 0), /* VMSA */
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 16, 4, 0), /* TCM */
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 12, 4, 0), /* ShareLvl */
+ S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 8, 4, 0xf), /* OuterShr */
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 4, 4, 0), /* PMSA */
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 0, 4, 0), /* VMSA */
ARM64_FTR_END,
};
@@ -221,8 +242,8 @@ static const struct arm64_ftr_bits ftr_id_aa64dfr0[] = {
};
static const struct arm64_ftr_bits ftr_mvfr2[] = {
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 4, 4, 0), /* FPMisc */
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 0, 4, 0), /* SIMDMisc */
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 4, 4, 0), /* FPMisc */
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 0, 4, 0), /* SIMDMisc */
ARM64_FTR_END,
};
@@ -234,25 +255,25 @@ static const struct arm64_ftr_bits ftr_dczid[] = {
static const struct arm64_ftr_bits ftr_id_isar5[] = {
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_ISAR5_RDM_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_ISAR5_CRC32_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_ISAR5_SHA2_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_ISAR5_SHA1_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_ISAR5_AES_SHIFT, 4, 0),
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_ISAR5_SEVL_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_ISAR5_RDM_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_ISAR5_CRC32_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_ISAR5_SHA2_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_ISAR5_SHA1_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_ISAR5_AES_SHIFT, 4, 0),
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_ISAR5_SEVL_SHIFT, 4, 0),
ARM64_FTR_END,
};
static const struct arm64_ftr_bits ftr_id_mmfr4[] = {
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 4, 4, 0), /* ac2 */
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 4, 4, 0), /* ac2 */
ARM64_FTR_END,
};
static const struct arm64_ftr_bits ftr_id_pfr0[] = {
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 12, 4, 0), /* State3 */
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 8, 4, 0), /* State2 */
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 4, 4, 0), /* State1 */
- ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 0, 4, 0), /* State0 */
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 12, 4, 0), /* State3 */
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 8, 4, 0), /* State2 */
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 4, 4, 0), /* State1 */
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 0, 4, 0), /* State0 */
ARM64_FTR_END,
};
@@ -268,6 +289,12 @@ static const struct arm64_ftr_bits ftr_id_dfr0[] = {
ARM64_FTR_END,
};
+static const struct arm64_ftr_bits ftr_zcr[] = {
+ ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE,
+ ZCR_ELx_LEN_SHIFT, ZCR_ELx_LEN_SIZE, 0), /* LEN */
+ ARM64_FTR_END,
+};
+
/*
* Common ftr bits for a 32bit register with all hidden, strict
* attributes, with 4bit feature fields and a default safe value of
@@ -334,6 +361,7 @@ static const struct __ftr_reg_entry {
/* Op1 = 0, CRn = 0, CRm = 4 */
ARM64_FTR_REG(SYS_ID_AA64PFR0_EL1, ftr_id_aa64pfr0),
ARM64_FTR_REG(SYS_ID_AA64PFR1_EL1, ftr_raz),
+ ARM64_FTR_REG(SYS_ID_AA64ZFR0_EL1, ftr_raz),
/* Op1 = 0, CRn = 0, CRm = 5 */
ARM64_FTR_REG(SYS_ID_AA64DFR0_EL1, ftr_id_aa64dfr0),
@@ -348,6 +376,9 @@ static const struct __ftr_reg_entry {
ARM64_FTR_REG(SYS_ID_AA64MMFR1_EL1, ftr_id_aa64mmfr1),
ARM64_FTR_REG(SYS_ID_AA64MMFR2_EL1, ftr_id_aa64mmfr2),
+ /* Op1 = 0, CRn = 1, CRm = 2 */
+ ARM64_FTR_REG(SYS_ZCR_EL1, ftr_zcr),
+
/* Op1 = 3, CRn = 0, CRm = 0 */
{ SYS_CTR_EL0, &arm64_ftr_reg_ctrel0 },
ARM64_FTR_REG(SYS_DCZID_EL0, ftr_dczid),
@@ -485,6 +516,7 @@ void __init init_cpu_features(struct cpuinfo_arm64 *info)
init_cpu_ftr_reg(SYS_ID_AA64MMFR2_EL1, info->reg_id_aa64mmfr2);
init_cpu_ftr_reg(SYS_ID_AA64PFR0_EL1, info->reg_id_aa64pfr0);
init_cpu_ftr_reg(SYS_ID_AA64PFR1_EL1, info->reg_id_aa64pfr1);
+ init_cpu_ftr_reg(SYS_ID_AA64ZFR0_EL1, info->reg_id_aa64zfr0);
if (id_aa64pfr0_32bit_el0(info->reg_id_aa64pfr0)) {
init_cpu_ftr_reg(SYS_ID_DFR0_EL1, info->reg_id_dfr0);
@@ -505,6 +537,10 @@ void __init init_cpu_features(struct cpuinfo_arm64 *info)
init_cpu_ftr_reg(SYS_MVFR2_EL1, info->reg_mvfr2);
}
+ if (id_aa64pfr0_sve(info->reg_id_aa64pfr0)) {
+ init_cpu_ftr_reg(SYS_ZCR_EL1, info->reg_zcr);
+ sve_init_vq_map();
+ }
}
static void update_cpu_ftr_reg(struct arm64_ftr_reg *reg, u64 new)
@@ -608,6 +644,9 @@ void update_cpu_features(int cpu,
taint |= check_update_ftr_reg(SYS_ID_AA64PFR1_EL1, cpu,
info->reg_id_aa64pfr1, boot->reg_id_aa64pfr1);
+ taint |= check_update_ftr_reg(SYS_ID_AA64ZFR0_EL1, cpu,
+ info->reg_id_aa64zfr0, boot->reg_id_aa64zfr0);
+
/*
* If we have AArch32, we care about 32-bit features for compat.
* If the system doesn't support AArch32, don't update them.
@@ -655,6 +694,16 @@ void update_cpu_features(int cpu,
info->reg_mvfr2, boot->reg_mvfr2);
}
+ if (id_aa64pfr0_sve(info->reg_id_aa64pfr0)) {
+ taint |= check_update_ftr_reg(SYS_ZCR_EL1, cpu,
+ info->reg_zcr, boot->reg_zcr);
+
+ /* Probe vector lengths, unless we already gave up on SVE */
+ if (id_aa64pfr0_sve(read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1)) &&
+ !sys_caps_initialised)
+ sve_update_vq_map();
+ }
+
/*
* Mismatched CPU features are a recipe for disaster. Don't even
* pretend to support them.
@@ -900,6 +949,19 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.min_field_value = 1,
},
#endif
+#ifdef CONFIG_ARM64_SVE
+ {
+ .desc = "Scalable Vector Extension",
+ .capability = ARM64_SVE,
+ .def_scope = SCOPE_SYSTEM,
+ .sys_reg = SYS_ID_AA64PFR0_EL1,
+ .sign = FTR_UNSIGNED,
+ .field_pos = ID_AA64PFR0_SVE_SHIFT,
+ .min_field_value = ID_AA64PFR0_SVE,
+ .matches = has_cpuid_feature,
+ .enable = sve_kernel_enable,
+ },
+#endif /* CONFIG_ARM64_SVE */
{},
};
@@ -921,9 +983,14 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_AES_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, HWCAP_AES),
HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_SHA1_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, HWCAP_SHA1),
HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_SHA2_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, HWCAP_SHA2),
+ HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_SHA2_SHIFT, FTR_UNSIGNED, 2, CAP_HWCAP, HWCAP_SHA512),
HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_CRC32_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, HWCAP_CRC32),
HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_ATOMICS_SHIFT, FTR_UNSIGNED, 2, CAP_HWCAP, HWCAP_ATOMICS),
HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_RDM_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, HWCAP_ASIMDRDM),
+ HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_SHA3_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, HWCAP_SHA3),
+ HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_SM3_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, HWCAP_SM3),
+ HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_SM4_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, HWCAP_SM4),
+ HWCAP_CAP(SYS_ID_AA64ISAR0_EL1, ID_AA64ISAR0_DP_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, HWCAP_ASIMDDP),
HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_FP_SHIFT, FTR_SIGNED, 0, CAP_HWCAP, HWCAP_FP),
HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_FP_SHIFT, FTR_SIGNED, 1, CAP_HWCAP, HWCAP_FPHP),
HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_ASIMD_SHIFT, FTR_SIGNED, 0, CAP_HWCAP, HWCAP_ASIMD),
@@ -932,6 +999,9 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
HWCAP_CAP(SYS_ID_AA64ISAR1_EL1, ID_AA64ISAR1_JSCVT_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, HWCAP_JSCVT),
HWCAP_CAP(SYS_ID_AA64ISAR1_EL1, ID_AA64ISAR1_FCMA_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, HWCAP_FCMA),
HWCAP_CAP(SYS_ID_AA64ISAR1_EL1, ID_AA64ISAR1_LRCPC_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, HWCAP_LRCPC),
+#ifdef CONFIG_ARM64_SVE
+ HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_SVE_SHIFT, FTR_UNSIGNED, ID_AA64PFR0_SVE, CAP_HWCAP, HWCAP_SVE),
+#endif
{},
};
@@ -1041,21 +1111,6 @@ void __init enable_cpu_capabilities(const struct arm64_cpu_capabilities *caps)
}
/*
- * Flag to indicate if we have computed the system wide
- * capabilities based on the boot time active CPUs. This
- * will be used to determine if a new booting CPU should
- * go through the verification process to make sure that it
- * supports the system capabilities, without using a hotplug
- * notifier.
- */
-static bool sys_caps_initialised;
-
-static inline void set_sys_caps_initialised(void)
-{
- sys_caps_initialised = true;
-}
-
-/*
* Check for CPU features that are used in early boot
* based on the Boot CPU value.
*/
@@ -1097,6 +1152,23 @@ verify_local_cpu_features(const struct arm64_cpu_capabilities *caps)
}
}
+static void verify_sve_features(void)
+{
+ u64 safe_zcr = read_sanitised_ftr_reg(SYS_ZCR_EL1);
+ u64 zcr = read_zcr_features();
+
+ unsigned int safe_len = safe_zcr & ZCR_ELx_LEN_MASK;
+ unsigned int len = zcr & ZCR_ELx_LEN_MASK;
+
+ if (len < safe_len || sve_verify_vq_map()) {
+ pr_crit("CPU%d: SVE: required vector length(s) missing\n",
+ smp_processor_id());
+ cpu_die_early();
+ }
+
+ /* Add checks on other ZCR bits here if necessary */
+}
+
/*
* Run through the enabled system capabilities and enable() it on this CPU.
* The capabilities were decided based on the available CPUs at the boot time.
@@ -1110,8 +1182,12 @@ static void verify_local_cpu_capabilities(void)
verify_local_cpu_errata_workarounds();
verify_local_cpu_features(arm64_features);
verify_local_elf_hwcaps(arm64_elf_hwcaps);
+
if (system_supports_32bit_el0())
verify_local_elf_hwcaps(compat_elf_hwcaps);
+
+ if (system_supports_sve())
+ verify_sve_features();
}
void check_local_cpu_capabilities(void)
@@ -1189,6 +1265,8 @@ void __init setup_cpu_features(void)
if (system_supports_32bit_el0())
setup_elf_hwcaps(compat_elf_hwcaps);
+ sve_setup();
+
/* Advertise that we have computed the system capabilities */
set_sys_caps_initialised();
@@ -1287,7 +1365,7 @@ static int emulate_mrs(struct pt_regs *regs, u32 insn)
if (!rc) {
dst = aarch64_insn_decode_register(AARCH64_INSN_REGTYPE_RT, insn);
pt_regs_write_reg(regs, dst, val);
- regs->pc += 4;
+ arm64_skip_faulting_instruction(regs, AARCH64_INSN_SIZE);
}
return rc;
diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c
index 311885962830..1e2554543506 100644
--- a/arch/arm64/kernel/cpuinfo.c
+++ b/arch/arm64/kernel/cpuinfo.c
@@ -19,6 +19,7 @@
#include <asm/cpu.h>
#include <asm/cputype.h>
#include <asm/cpufeature.h>
+#include <asm/fpsimd.h>
#include <linux/bitops.h>
#include <linux/bug.h>
@@ -69,6 +70,12 @@ static const char *const hwcap_str[] = {
"fcma",
"lrcpc",
"dcpop",
+ "sha3",
+ "sm3",
+ "sm4",
+ "asimddp",
+ "sha512",
+ "sve",
NULL
};
@@ -326,6 +333,7 @@ static void __cpuinfo_store_cpu(struct cpuinfo_arm64 *info)
info->reg_id_aa64mmfr2 = read_cpuid(ID_AA64MMFR2_EL1);
info->reg_id_aa64pfr0 = read_cpuid(ID_AA64PFR0_EL1);
info->reg_id_aa64pfr1 = read_cpuid(ID_AA64PFR1_EL1);
+ info->reg_id_aa64zfr0 = read_cpuid(ID_AA64ZFR0_EL1);
/* Update the 32bit ID registers only if AArch32 is implemented */
if (id_aa64pfr0_32bit_el0(info->reg_id_aa64pfr0)) {
@@ -348,6 +356,10 @@ static void __cpuinfo_store_cpu(struct cpuinfo_arm64 *info)
info->reg_mvfr2 = read_cpuid(MVFR2_EL1);
}
+ if (IS_ENABLED(CONFIG_ARM64_SVE) &&
+ id_aa64pfr0_sve(info->reg_id_aa64pfr0))
+ info->reg_zcr = read_zcr_features();
+
cpuinfo_detect_icache_policy(info);
}
diff --git a/arch/arm64/kernel/debug-monitors.c b/arch/arm64/kernel/debug-monitors.c
index c7ef99904934..a88b6ccebbb4 100644
--- a/arch/arm64/kernel/debug-monitors.c
+++ b/arch/arm64/kernel/debug-monitors.c
@@ -30,6 +30,7 @@
#include <asm/cpufeature.h>
#include <asm/cputype.h>
+#include <asm/daifflags.h>
#include <asm/debug-monitors.h>
#include <asm/system_misc.h>
@@ -46,9 +47,9 @@ u8 debug_monitors_arch(void)
static void mdscr_write(u32 mdscr)
{
unsigned long flags;
- local_dbg_save(flags);
+ flags = local_daif_save();
write_sysreg(mdscr, mdscr_el1);
- local_dbg_restore(flags);
+ local_daif_restore(flags);
}
NOKPROBE_SYMBOL(mdscr_write);
diff --git a/arch/arm64/kernel/entry-fpsimd.S b/arch/arm64/kernel/entry-fpsimd.S
index 6a27cd6dbfa6..73f17bffcd23 100644
--- a/arch/arm64/kernel/entry-fpsimd.S
+++ b/arch/arm64/kernel/entry-fpsimd.S
@@ -41,3 +41,20 @@ ENTRY(fpsimd_load_state)
fpsimd_restore x0, 8
ret
ENDPROC(fpsimd_load_state)
+
+#ifdef CONFIG_ARM64_SVE
+ENTRY(sve_save_state)
+ sve_save 0, x1, 2
+ ret
+ENDPROC(sve_save_state)
+
+ENTRY(sve_load_state)
+ sve_load 0, x1, x2, 3
+ ret
+ENDPROC(sve_load_state)
+
+ENTRY(sve_get_vl)
+ _sve_rdvl 0, 1
+ ret
+ENDPROC(sve_get_vl)
+#endif /* CONFIG_ARM64_SVE */
diff --git a/arch/arm64/kernel/entry-ftrace.S b/arch/arm64/kernel/entry-ftrace.S
index e1be42e11ff5..1175f5827ae1 100644
--- a/arch/arm64/kernel/entry-ftrace.S
+++ b/arch/arm64/kernel/entry-ftrace.S
@@ -108,13 +108,8 @@ ENTRY(_mcount)
mcount_get_lr x1 // function's lr (= parent's pc)
blr x2 // (*ftrace_trace_function)(pc, lr);
-#ifndef CONFIG_FUNCTION_GRAPH_TRACER
-skip_ftrace_call: // return;
- mcount_exit // }
-#else
- mcount_exit // return;
- // }
-skip_ftrace_call:
+skip_ftrace_call: // }
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
ldr_l x2, ftrace_graph_return
cmp x0, x2 // if ((ftrace_graph_return
b.ne ftrace_graph_caller // != ftrace_stub)
@@ -123,9 +118,8 @@ skip_ftrace_call:
adr_l x0, ftrace_graph_entry_stub // != ftrace_graph_entry_stub))
cmp x0, x2
b.ne ftrace_graph_caller // ftrace_graph_caller();
-
- mcount_exit
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
+ mcount_exit
ENDPROC(_mcount)
#else /* CONFIG_DYNAMIC_FTRACE */
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index e1c59d4008a8..6d14b8f29b5f 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -28,7 +28,7 @@
#include <asm/errno.h>
#include <asm/esr.h>
#include <asm/irq.h>
-#include <asm/memory.h>
+#include <asm/processor.h>
#include <asm/ptrace.h>
#include <asm/thread_info.h>
#include <asm/asm-uaccess.h>
@@ -221,6 +221,8 @@ alternative_else_nop_endif
.macro kernel_exit, el
.if \el != 0
+ disable_daif
+
/* Restore the task's original addr_limit. */
ldr x20, [sp, #S_ORIG_ADDR_LIMIT]
str x20, [tsk, #TSK_TI_ADDR_LIMIT]
@@ -373,18 +375,18 @@ ENTRY(vectors)
kernel_ventry el1_sync // Synchronous EL1h
kernel_ventry el1_irq // IRQ EL1h
kernel_ventry el1_fiq_invalid // FIQ EL1h
- kernel_ventry el1_error_invalid // Error EL1h
+ kernel_ventry el1_error // Error EL1h
kernel_ventry el0_sync // Synchronous 64-bit EL0
kernel_ventry el0_irq // IRQ 64-bit EL0
kernel_ventry el0_fiq_invalid // FIQ 64-bit EL0
- kernel_ventry el0_error_invalid // Error 64-bit EL0
+ kernel_ventry el0_error // Error 64-bit EL0
#ifdef CONFIG_COMPAT
kernel_ventry el0_sync_compat // Synchronous 32-bit EL0
kernel_ventry el0_irq_compat // IRQ 32-bit EL0
kernel_ventry el0_fiq_invalid_compat // FIQ 32-bit EL0
- kernel_ventry el0_error_invalid_compat // Error 32-bit EL0
+ kernel_ventry el0_error_compat // Error 32-bit EL0
#else
kernel_ventry el0_sync_invalid // Synchronous 32-bit EL0
kernel_ventry el0_irq_invalid // IRQ 32-bit EL0
@@ -453,10 +455,6 @@ ENDPROC(el0_error_invalid)
el0_fiq_invalid_compat:
inv_entry 0, BAD_FIQ, 32
ENDPROC(el0_fiq_invalid_compat)
-
-el0_error_invalid_compat:
- inv_entry 0, BAD_ERROR, 32
-ENDPROC(el0_error_invalid_compat)
#endif
el1_sync_invalid:
@@ -508,24 +506,18 @@ el1_da:
* Data abort handling
*/
mrs x3, far_el1
- enable_dbg
- // re-enable interrupts if they were enabled in the aborted context
- tbnz x23, #7, 1f // PSR_I_BIT
- enable_irq
-1:
+ inherit_daif pstate=x23, tmp=x2
clear_address_tag x0, x3
mov x2, sp // struct pt_regs
bl do_mem_abort
- // disable interrupts before pulling preserved data off the stack
- disable_irq
kernel_exit 1
el1_sp_pc:
/*
* Stack or PC alignment exception handling
*/
mrs x0, far_el1
- enable_dbg
+ inherit_daif pstate=x23, tmp=x2
mov x2, sp
bl do_sp_pc_abort
ASM_BUG()
@@ -533,7 +525,7 @@ el1_undef:
/*
* Undefined instruction
*/
- enable_dbg
+ inherit_daif pstate=x23, tmp=x2
mov x0, sp
bl do_undefinstr
ASM_BUG()
@@ -550,7 +542,7 @@ el1_dbg:
kernel_exit 1
el1_inv:
// TODO: add support for undefined instructions in kernel mode
- enable_dbg
+ inherit_daif pstate=x23, tmp=x2
mov x0, sp
mov x2, x1
mov x1, #BAD_SYNC
@@ -561,7 +553,7 @@ ENDPROC(el1_sync)
.align 6
el1_irq:
kernel_entry 1
- enable_dbg
+ enable_da_f
#ifdef CONFIG_TRACE_IRQFLAGS
bl trace_hardirqs_off
#endif
@@ -607,6 +599,8 @@ el0_sync:
b.eq el0_ia
cmp x24, #ESR_ELx_EC_FP_ASIMD // FP/ASIMD access
b.eq el0_fpsimd_acc
+ cmp x24, #ESR_ELx_EC_SVE // SVE access
+ b.eq el0_sve_acc
cmp x24, #ESR_ELx_EC_FP_EXC64 // FP/ASIMD exception
b.eq el0_fpsimd_exc
cmp x24, #ESR_ELx_EC_SYS64 // configurable trap
@@ -658,6 +652,7 @@ el0_svc_compat:
/*
* AArch32 syscall handling
*/
+ ldr x16, [tsk, #TSK_TI_FLAGS] // load thread flags
adrp stbl, compat_sys_call_table // load compat syscall table pointer
mov wscno, w7 // syscall number in w7 (r7)
mov wsc_nr, #__NR_compat_syscalls
@@ -667,6 +662,10 @@ el0_svc_compat:
el0_irq_compat:
kernel_entry 0, 32
b el0_irq_naked
+
+el0_error_compat:
+ kernel_entry 0, 32
+ b el0_error_naked
#endif
el0_da:
@@ -674,8 +673,7 @@ el0_da:
* Data abort handling
*/
mrs x26, far_el1
- // enable interrupts before calling the main handler
- enable_dbg_and_irq
+ enable_daif
ct_user_exit
clear_address_tag x0, x26
mov x1, x25
@@ -687,8 +685,7 @@ el0_ia:
* Instruction abort handling
*/
mrs x26, far_el1
- // enable interrupts before calling the main handler
- enable_dbg_and_irq
+ enable_daif
ct_user_exit
mov x0, x26
mov x1, x25
@@ -699,17 +696,27 @@ el0_fpsimd_acc:
/*
* Floating Point or Advanced SIMD access
*/
- enable_dbg
+ enable_daif
ct_user_exit
mov x0, x25
mov x1, sp
bl do_fpsimd_acc
b ret_to_user
+el0_sve_acc:
+ /*
+ * Scalable Vector Extension access