On Thu, Jun 17, 2021 at 06:58:21PM +0800, Yanan Wang wrote: > To prepare for performing CMOs for guest stage-2 in the fault handlers > in pgtable.c, here introduce two cache maintenance callbacks in struct > kvm_pgtable_mm_ops. We also adjust the comment alignment for the > existing part but make no real content change at all. > > Signed-off-by: Yanan Wang <wangyanan55@xxxxxxxxxx> > --- > arch/arm64/include/asm/kvm_pgtable.h | 42 +++++++++++++++++----------- > 1 file changed, 25 insertions(+), 17 deletions(-) > > diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h > index c3674c47d48c..b6ce34aa44bb 100644 > --- a/arch/arm64/include/asm/kvm_pgtable.h > +++ b/arch/arm64/include/asm/kvm_pgtable.h > @@ -27,23 +27,29 @@ typedef u64 kvm_pte_t; > > /** > * struct kvm_pgtable_mm_ops - Memory management callbacks. > - * @zalloc_page: Allocate a single zeroed memory page. The @arg parameter > - * can be used by the walker to pass a memcache. The > - * initial refcount of the page is 1. > - * @zalloc_pages_exact: Allocate an exact number of zeroed memory pages. The > - * @size parameter is in bytes, and is rounded-up to the > - * next page boundary. The resulting allocation is > - * physically contiguous. > - * @free_pages_exact: Free an exact number of memory pages previously > - * allocated by zalloc_pages_exact. > - * @get_page: Increment the refcount on a page. > - * @put_page: Decrement the refcount on a page. When the refcount > - * reaches 0 the page is automatically freed. > - * @page_count: Return the refcount of a page. > - * @phys_to_virt: Convert a physical address into a virtual address mapped > - * in the current context. > - * @virt_to_phys: Convert a virtual address mapped in the current context > - * into a physical address. > + * @zalloc_page: Allocate a single zeroed memory page. > + * The @arg parameter can be used by the walker > + * to pass a memcache. The initial refcount of > + * the page is 1. > + * @zalloc_pages_exact: Allocate an exact number of zeroed memory pages. > + * The @size parameter is in bytes, and is rounded > + * up to the next page boundary. The resulting > + * allocation is physically contiguous. > + * @free_pages_exact: Free an exact number of memory pages previously > + * allocated by zalloc_pages_exact. > + * @get_page: Increment the refcount on a page. > + * @put_page: Decrement the refcount on a page. When the > + * refcount reaches 0 the page is automatically > + * freed. > + * @page_count: Return the refcount of a page. > + * @phys_to_virt: Convert a physical address into a virtual address > + * mapped in the current context. > + * @virt_to_phys: Convert a virtual address mapped in the current > + * context into a physical address. > + * @clean_invalidate_dcache: Clean and invalidate the data cache for the > + * specified memory address range. This should probably be explicit about whether this to the PoU/PoC/PoP. Will
