1 files changed, 0 insertions, 65 deletions
diff --git a/features/rt/arm64-fpsimd-Delay-freeing-memory-in-fpsimd_flush_th.patch b/features/rt/arm64-fpsimd-Delay-freeing-memory-in-fpsimd_flush_th.patch
deleted file mode 100644
index 75e9f204..00000000
--- a/features/rt/arm64-fpsimd-Delay-freeing-memory-in-fpsimd_flush_th.patch
+++ /dev/null
@@ -1,65 +0,0 @@
-From c17705510939368390130106b37160bb2ff08e1c Mon Sep 17 00:00:00 2001
-From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
-Date: Wed, 25 Jul 2018 14:02:38 +0200
-Subject: [PATCH 176/191] arm64: fpsimd: Delay freeing memory in
- fpsimd_flush_thread()
-
-fpsimd_flush_thread() invokes kfree() via sve_free() within a preempt disabled
-section which is not working on -RT.
-
-Delay freeing of memory until preemption is enabled again.
-
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
----
- arch/arm64/kernel/fpsimd.c | 14 +++++++++++++-
- 1 file changed, 13 insertions(+), 1 deletion(-)
-
-diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
-index 062b21f30f94..0ea2df6554e5 100644
---- a/arch/arm64/kernel/fpsimd.c
-+++ b/arch/arm64/kernel/fpsimd.c
-@@ -226,6 +226,16 @@ static void sve_free(struct task_struct *task)
- 	__sve_free(task);
- }
- 
-+static void *sve_free_atomic(struct task_struct *task)
-+{
-+	void *sve_state = task->thread.sve_state;
-+
-+	WARN_ON(test_tsk_thread_flag(task, TIF_SVE));
-+
-+	task->thread.sve_state = NULL;
-+	return sve_state;
-+}
-+
- /*
-  * TIF_SVE controls whether a task can use SVE without trapping while
-  * in userspace, and also the way a task's FPSIMD/SVE state is stored
-@@ -1022,6 +1032,7 @@ void fpsimd_thread_switch(struct task_struct *next)
- void fpsimd_flush_thread(void)
- {
- 	int vl, supported_vl;
-+	void *mem = NULL;
- 
- 	if (!system_supports_fpsimd())
- 		return;
-@@ -1034,7 +1045,7 @@ void fpsimd_flush_thread(void)
- 
- 	if (system_supports_sve()) {
- 		clear_thread_flag(TIF_SVE);
--		sve_free(current);
-+		mem = sve_free_atomic(current);
- 
- 		/*
- 		 * Reset the task vector length as required.
-@@ -1068,6 +1079,7 @@ void fpsimd_flush_thread(void)
- 	}
- 
- 	put_cpu_fpsimd_context();
-+	kfree(mem);
- }
- 
- /*
--- 
-2.19.1
-