X-Git-Url: http://git.monstr.eu/?p=linux-2.6-microblaze.git;a=blobdiff_plain;f=arch%2Farm64%2Fkernel%2Ffpsimd.c;h=5a294f20e9decd9d0c4aa6c7ab91f63bb6b2b4e6;hp=e57b23f952846a1dd59df94821752f24359986c0;hb=32b47072f319bb65e9afad59e78153d83496f1f5;hpb=8c1bfd746030a14435c9b60d08a81af61332089b

diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
index e57b23f95284..5a294f20e9de 100644
--- 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);