flush_tlb_all performs a TLBIALL, which affects only the executing PE; fix
that by executing a TLBIALLIS. Note that virtualization extensions imply
the multiprocessing extensions, so we're safe to use that instruction.
While we're at it, let's add a comment to flush_dcache_addr stating what
instruction is uses (unsurprisingly, it's a dcache clean and invalidate to
PoC).
Signed-off-by: Alexandru Elisei <alexandru.elisei@xxxxxxx>
---
lib/arm/asm/mmu.h | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/lib/arm/asm/mmu.h b/lib/arm/asm/mmu.h
index 915c2b07dead..e64a900a45a6 100644
--- a/lib/arm/asm/mmu.h
+++ b/lib/arm/asm/mmu.h
@@ -25,8 +25,10 @@ static inline void local_flush_tlb_all(void)
static inline void flush_tlb_all(void)
{
- //TODO
- local_flush_tlb_all();
+ /* TLBIALLIS */
+ asm volatile("mcr p15, 0, %0, c8, c3, 0" :: "r" (0));
+ dsb();
+ isb();
}
static inline void flush_tlb_page(unsigned long vaddr)
@@ -39,6 +41,7 @@ static inline void flush_tlb_page(unsigned long vaddr)
static inline void flush_dcache_addr(unsigned long vaddr)
{
+ /* DCCIMVAC */
asm volatile("mcr p15, 0, %0, c7, c14, 1" :: "r" (vaddr));
}
--
2.20.1
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