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[RFC,2/4] init: add missing sync_icache after exception vector patching

Message ID 20170813135959.23863-3-npiggin@gmail.com
State Superseded
Headers show

Commit Message

Nicholas Piggin Aug. 13, 2017, 1:59 p.m. UTC 
There are two cases where sync_icache is not called immediately
after instructions are modified.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 core/init.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/core/init.c b/core/init.c
index 61b531c7..01fe12c9 100644
--- a/core/init.c
+++ b/core/init.c
@@ -382,6 +382,7 @@  static bool load_kernel(void)
 		if (kernel_entry < 0x2000) {
 			cpu_set_pm_enable(false);
 			memcpy(NULL, old_vectors, 0x2000);
+			sync_icache();
 		}
 		do_stb = true;
 		stb_container = kh; /* probably incorrect */
@@ -721,6 +722,7 @@  void setup_reset_vector(void)
 	dst = (uint32_t *)0x100;
 	while(src < &reset_patch_end)
 		*(dst++) = *(src++);
+	sync_icache();
 }
 
 void copy_exception_vectors(void)