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[RFC,3/6] arm64: mm: free __init memory via the linear mapping

Message ID 1456330893-19228-4-git-send-email-ard.biesheuvel@linaro.org (mailing list archive)
State New, archived
Headers show

Commit Message

Ard Biesheuvel Feb. 24, 2016, 4:21 p.m. UTC 
The implementation of free_initmem_default() expects __init_begin
and __init_end to be covered by the linear mapping, which is no
longer the case. So open code it instead, using addresses that are
explicitly translated from kernel virtual to linear virtual.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 arch/arm64/mm/init.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 88046b94fa87..e286716848af 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -398,7 +398,8 @@  void __init mem_init(void)
 
 void free_initmem(void)
 {
-	free_initmem_default(0);
+	free_reserved_area(__va(__pa(__init_begin)), __va(__pa(__init_end)),
+			   0, "unused kernel");
 	fixup_init();
 }