[PATCH 3/7] x86: mtrr: Skip MSRs that were already programmed in mtrr_commit()
    Bin Meng 
    bmeng.cn at gmail.com
       
    Sat Jul 31 10:45:25 CEST 2021
    
    
  
At present mtrr_commit() programs the MTRR MSRs starting from
index 0, which may overwrite MSRs that were already programmed
by previous boot stage or FSP.
Switch to call mtrr_set_next_var() instead.
Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
---
 arch/x86/cpu/mtrr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/cpu/mtrr.c b/arch/x86/cpu/mtrr.c
index 73cf7bb2be..14c644eb56 100644
--- a/arch/x86/cpu/mtrr.c
+++ b/arch/x86/cpu/mtrr.c
@@ -155,7 +155,7 @@ int mtrr_commit(bool do_caches)
 	debug("open done\n");
 	qsort(req, gd->arch.mtrr_req_count, sizeof(*req), h_comp_mtrr);
 	for (i = 0; i < gd->arch.mtrr_req_count; i++, req++)
-		set_var_mtrr(i, req->type, req->start, req->size);
+		mtrr_set_next_var(req->type, req->start, req->size);
 
 	debug("close\n");
 	mtrr_close(&state, do_caches);
-- 
2.25.1
    
    
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