[PATCH 5/5] drivers/virt: pkvm: Allow granule larger than PAGE_SIZE

[Vincent Donnefort]

Both MEM_SHARE and MMIO_GUARD now support a PAGE_SIZE smaller than the
hypervisor granule. We can relax this restriction.

Signed-off-by: Vincent Donnefort <vdonnefort at google.com>
---
 drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c b/drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c
index 3852be6bd16b..e3363a69a7eb 100644
--- a/drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c
+++ b/drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c
@@ -135,7 +135,7 @@ void __init pkvm_init_hyp_services(void)
 
 	arm_smccc_1_1_invoke(ARM_SMCCC_VENDOR_HYP_KVM_HYP_MEMINFO_FUNC_ID,
 			     0, 0, 0, &res);
-	if (res.a0 > PAGE_SIZE) /* Includes error codes */
+	if ((long)res.a0 <= 0)
 		return;
 
 	pkvm_granule = res.a0;
-- 
2.56.0.rc1.315.gc6ed9934b7-goog