PFU: do not cause execution of any instructions to be trapped

lipengfei28 · GUIDINGLI · commit 78a6ba6d5fd8 · 2024-10-11T17:04:28.000+08:00
Signed-off-by: lipengfei28 &lt;lipengfei28@xiaomi.com&gt;
diff --git a/arch/arm64/src/common/arm64_fork.c b/arch/arm64/src/common/arm64_fork.c
@@ -59,8 +59,6 @@ void arm64_fork_fpureg_save(struct fork_s *context)
 {
   irqstate_t flags;
 
-  arm64_fpu_disable();
-
   /* Take a snapshot of the thread fpu reg context right now */
 
   flags = enter_critical_section();
@@ -69,7 +67,6 @@ void arm64_fork_fpureg_save(struct fork_s *context)
   ARM64_DSB();
 
   leave_critical_section(flags);
-  arm64_fpu_enable();
 }
 
 #endif

Original file line number	Diff line number	Diff line change
`@@ -59,8 +59,6 @@ void arm64_fork_fpureg_save(struct fork_s *context)`
`59`	`59`	`{`
`60`	`60`	`irqstate_t flags;`
`61`	`61`
`62`		`- arm64_fpu_disable();`
`63`		`-`
`64`	`62`	`/* Take a snapshot of the thread fpu reg context right now */`
`65`	`63`
`66`	`64`	`flags = enter_critical_section();`
`@@ -69,7 +67,6 @@ void arm64_fork_fpureg_save(struct fork_s *context)`
`69`	`67`	`ARM64_DSB();`
`70`	`68`
`71`	`69`	`leave_critical_section(flags);`
`72`		`- arm64_fpu_enable();`
`73`	`70`	`}`
`74`	`71`
`75`	`72`	`#endif`