Merge tag 'arc-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

[linux-2.6-microblaze.git] / arch / arm64 / kernel / fpsimd.c

diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
index e57b23f..5a294f2 100644 (file)
--- a/arch/arm64/kernel/fpsimd.c
+++ b/arch/arm64/kernel/fpsimd.c
@@ -162,6 +162,8 @@ extern void __percpu *efi_sve_state;
 DEFINE_PER_CPU(bool, fpsimd_context_busy);
 EXPORT_PER_CPU_SYMBOL(fpsimd_context_busy);
 
+static void fpsimd_bind_task_to_cpu(void);
+
 static void __get_cpu_fpsimd_context(void)
 {
        bool busy = __this_cpu_xchg(fpsimd_context_busy, true);
@@ -518,12 +520,6 @@ void sve_alloc(struct task_struct *task)
        /* This is a small allocation (maximum ~8KB) and Should Not Fail. */
        task->thread.sve_state =
                kzalloc(sve_state_size(task), GFP_KERNEL);
-
-       /*
-        * If future SVE revisions can have larger vectors though,
-        * this may cease to be true:
-        */
-       BUG_ON(!task->thread.sve_state);
 }
 
 
@@ -943,6 +939,10 @@ void do_sve_acc(unsigned int esr, struct pt_regs *regs)
        }
 
        sve_alloc(current);
+       if (!current->thread.sve_state) {
+               force_sig(SIGKILL);
+               return;
+       }
 
        get_cpu_fpsimd_context();
 
@@ -1112,7 +1112,7 @@ void fpsimd_signal_preserve_current_state(void)
  * The caller must have ownership of the cpu FPSIMD context before calling
  * this function.
  */
-void fpsimd_bind_task_to_cpu(void)
+static void fpsimd_bind_task_to_cpu(void)
 {
        struct fpsimd_last_state_struct *last =
                this_cpu_ptr(&fpsimd_last_state);