[PATCH v2 2/6] xen/x86: free_p2m_page: use memblock_free_ptr() to free a virtual pointer

From: Mike Rapoport
Date: Thu Sep 30 2021 - 14:51:04 EST


From: Mike Rapoport <rppt@xxxxxxxxxxxxx>

free_p2m_page() wrongly passes a virtual pointer to memblock_free() that
treats it as a physical address.

Call memblock_free_ptr() instead that gets a virtual address to free the
memory.

Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
---
arch/x86/xen/p2m.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 5e6e236977c7..141bb9dbd2fb 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -197,7 +197,7 @@ static void * __ref alloc_p2m_page(void)
static void __ref free_p2m_page(void *p)
{
if (unlikely(!slab_is_available())) {
- memblock_free((unsigned long)p, PAGE_SIZE);
+ memblock_free_ptr(p, PAGE_SIZE);
return;
}

--
2.28.0