On Thu, Apr 16, 2026 at 01:37:15PM +0000, Anirudh Rayabharam (Microsoft) wrote: > The hypervisor's map GPA hypercall handles large pages intelligently, > combining 2M pages into 1G mappings when alignment allows. > > Remove the PMD_ORDER check in mshv_chunk_stride() so that 1G hugepages > and other large page orders are passed through as 2M-aligned chunks, > letting the hypervisor promote them to 1G mappings automatically. > > Signed-off-by: Anirudh Rayabharam (Microsoft) <[email protected]> > --- > drivers/hv/mshv_regions.c | 5 +---- > 1 file changed, 1 insertion(+), 4 deletions(-) > > diff --git a/drivers/hv/mshv_regions.c b/drivers/hv/mshv_regions.c > index fdffd4f002f6..5f617a96d97a 100644 > --- a/drivers/hv/mshv_regions.c > +++ b/drivers/hv/mshv_regions.c > @@ -29,7 +29,7 @@ > * Uses huge page stride if the backing page is huge and the guest mapping > * is properly aligned; otherwise falls back to single page stride. > * > - * Return: Stride in pages, or -EINVAL if page order is unsupported. > + * Return: Stride in pages. > */ > static int mshv_chunk_stride(struct page *page, > u64 gfn, u64 page_count)
Nit: the return type of the function should now become unsigned. Reviewed-by: Stanislav Kinsburskii <[email protected]> > @@ -47,9 +47,6 @@ static int mshv_chunk_stride(struct page *page, > return 1; > > page_order = folio_order(page_folio(page)); > - /* The hypervisor only supports 2M huge page */ > - if (page_order != PMD_ORDER) > - return -EINVAL; > > return 1 << page_order; > } > > --- > base-commit: cd9f2e7d6e5b1837ef40b96e300fa28b73ab5a77 > change-id: 20260416-huge_1g-e44461393c8f > > Best regards, > -- > Anirudh Rayabharam (Microsoft) <[email protected]> >
