diff mbox series

[5.8,028/124] RISC-V: Make sure memblock reserves the memory containing DT

Message ID 20201012133148.208719220@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Oct. 12, 2020, 1:30 p.m. UTC 
From: Atish Patra <atish.patra@wdc.com>

commit a78c6f5956a949b496a5b087188dde52483edf51 upstream.

Currently, the memory containing DT is not reserved. Thus, that region
of memory can be reallocated or reused for other purposes. This may result
in  corrupted DT for nommu virt board in Qemu. We may not face any issue
in kendryte as DT is embedded in the kernel image for that.

Fixes: 6bd33e1ece52 ("riscv: add nommu support")
Cc: stable@vger.kernel.org
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/riscv/mm/init.c |    1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -515,6 +515,7 @@  asmlinkage void __init setup_vm(uintptr_
 #else
 	dtb_early_va = (void *)dtb_pa;
 #endif
+	dtb_early_pa = dtb_pa;
 }
 
 static inline void setup_vm_final(void)