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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-07-28 11:21:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-07-28 11:21:57 -0700 |
| commit | f837f0a3c94882a29e38ff211a36c1c8a0f07804 (patch) | |
| tree | d592f826665044a16f791a2f220cc5ae3068d2bd /arch | |
| parent | 81eef8909d171bdca6af37028a11a24e011ed312 (diff) | |
| parent | 003e6b56d780095a9adc23efc9cb4b4b4717169b (diff) | |
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- A couple of SME updates for recent fixes (one of which went to
stable): reverting the flushing of the SME hardware state along with
the thread flushing and making sure we have the correct vector length
before reallocating.
- An ACPI/IORT fix to avoid skipping ID mappings whose "number of IDs"
is 0 (the spec reports the number of IDs in the mapping range minus
1).
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
ACPI/IORT: Remove erroneous id_count check in iort_node_get_rmr_info()
arm64/sme: Set new vector length before reallocating
arm64/fpsimd: Don't flush SME register hardware state along with thread
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/kernel/fpsimd.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index 89d54a5242d1..520b681a07bb 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -917,6 +917,8 @@ int vec_set_vector_length(struct task_struct *task, enum vec_type type, if (task == current) put_cpu_fpsimd_context(); + task_set_vl(task, type, vl); + /* * Free the changed states if they are not in use, SME will be * reallocated to the correct size on next use and we just @@ -931,8 +933,6 @@ int vec_set_vector_length(struct task_struct *task, enum vec_type type, if (free_sme) sme_free(task); - task_set_vl(task, type, vl); - out: update_tsk_thread_flag(task, vec_vl_inherit_flag(type), flags & PR_SVE_VL_INHERIT); @@ -1666,7 +1666,6 @@ void fpsimd_flush_thread(void) fpsimd_flush_thread_vl(ARM64_VEC_SME); current->thread.svcr = 0; - sme_smstop(); } current->thread.fp_type = FP_STATE_FPSIMD; |