[PATCH] mshv: remove page order restriction to enable 1G hugepage support

[Anirudh Rayabharam (Microsoft)]

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) <anirudh@xxxxxxxxxxxxx>
---
 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)
@@ -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) <anirudh@xxxxxxxxxxxxx>