On Wed, 2023-11-08 at 11:17 +0000, Nicolas Saenz Julienne wrote:
> Decouple hugepage_has_attrs() from struct kvm's mem_attr_array to
> allow other memory attribute sources to use the function.
>
> Signed-off-by: Nicolas Saenz Julienne <nsaenz@xxxxxxxxxx>
> ---
> arch/x86/kvm/mmu/mmu.c | 18 ++++++++++--------
> 1 file changed, 10 insertions(+), 8 deletions(-)
>
> diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
> index 4ace2f8660b0..c0fd3afd6be5 100644
> --- a/arch/x86/kvm/mmu/mmu.c
> +++ b/arch/x86/kvm/mmu/mmu.c
> @@ -7290,19 +7290,19 @@ static void hugepage_set_mixed(struct kvm_memory_slot *slot, gfn_t gfn,
> lpage_info_slot(gfn, slot, level)->disallow_lpage |= KVM_LPAGE_MIXED_FLAG;
> }
>
> -static bool hugepage_has_attrs(struct kvm *kvm, struct kvm_memory_slot *slot,
> - gfn_t gfn, int level, unsigned long attrs)
> +static bool hugepage_has_attrs(struct xarray *mem_attr_array,
> + struct kvm_memory_slot *slot, gfn_t gfn,
> + int level, unsigned long attrs)
> {
> const unsigned long start = gfn;
> const unsigned long end = start + KVM_PAGES_PER_HPAGE(level);
>
> if (level == PG_LEVEL_2M)
> - return kvm_range_has_memory_attributes(&kvm->mem_attr_array,
> - start, end, attrs);
> + return kvm_range_has_memory_attributes(mem_attr_array, start, end, attrs);
>
> for (gfn = start; gfn < end; gfn += KVM_PAGES_PER_HPAGE(level - 1)) {
> if (hugepage_test_mixed(slot, gfn, level - 1) ||
> - attrs != kvm_get_memory_attributes(&kvm->mem_attr_array, gfn))
> + attrs != kvm_get_memory_attributes(mem_attr_array, gfn))
> return false;
> }
> return true;
> @@ -7344,7 +7344,8 @@ bool kvm_arch_post_set_memory_attributes(struct kvm *kvm,
> * misaligned address regardless of memory attributes.
> */
> if (gfn >= slot->base_gfn) {
> - if (hugepage_has_attrs(kvm, slot, gfn, level, attrs))
> + if (hugepage_has_attrs(&kvm->mem_attr_array,
> + slot, gfn, level, attrs))
> hugepage_clear_mixed(slot, gfn, level);
> else
> hugepage_set_mixed(slot, gfn, level);
> @@ -7366,7 +7367,8 @@ bool kvm_arch_post_set_memory_attributes(struct kvm *kvm,
> */
> if (gfn < range->end &&
> (gfn + nr_pages) <= (slot->base_gfn + slot->npages)) {
> - if (hugepage_has_attrs(kvm, slot, gfn, level, attrs))
> + if (hugepage_has_attrs(&kvm->mem_attr_array, slot, gfn,
> + level, attrs))
> hugepage_clear_mixed(slot, gfn, level);
> else
> hugepage_set_mixed(slot, gfn, level);
> @@ -7405,7 +7407,7 @@ void kvm_mmu_init_memslot_memory_attributes(struct kvm *kvm,
> unsigned long attrs =
> kvm_get_memory_attributes(&kvm->mem_attr_array, gfn);
>
> - if (hugepage_has_attrs(kvm, slot, gfn, level, attrs))
> + if (hugepage_has_attrs(&kvm->mem_attr_array, slot, gfn, level, attrs))
> hugepage_clear_mixed(slot, gfn, level);
> else
> hugepage_set_mixed(slot, gfn, level);
hugepage_has_attrs is also not a name that conveys the meaning of what it does IMHO,
but I don't know a better name to be honest.
Same remarks as for other two patches apply here as well.
Best regards,
Maxim Levitsky
