On 08/04/16 18:03, Christoffer Dall wrote:
On Fri, Apr 08, 2016 at 04:37:02PM +0100, Suzuki K Poulose wrote:
On 08/04/16 14:42, Christoffer Dall wrote:
On Mon, Apr 04, 2016 at 05:26:13PM +0100, Suzuki K Poulose wrote:
-static void clear_pud_entry(struct kvm *kvm, pud_t *pud, phys_addr_t addr)
+static void clear_stage2_pud_entry(struct kvm *kvm, pud_t *pud, phys_addr_t addr)
{
- pmd_t *pmd_table = pmd_offset(pud, 0);
- VM_BUG_ON(pud_huge(*pud));
- pud_clear(pud);
+ pmd_t *pmd_table __maybe_unused = stage2_pmd_offset(pud, 0);
The __maybe_unused are slightly ugly, so it may be nicer to create the
stage2_pmd_free() as static inline's if they're defined to do nothing
instead.
Sure, we could do that for stage2. However, we will need to fix the host helpers
as well for making such a change in the _hyp version (for 16K + 36bit VA).
I thought the host helpers were already done like that, since we don't
need the __maybe_unused currently. If it involves changing core code
etc. then don't bother.
Unfortunately no, e.g,
include/asm-generic/pgtable-nopud.h defines:
#define pud_free(mm, x) do { } while (0)
Cheers
Suzuki
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