From 1543e317f1da31b75942316931e8f491a8920811 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 04 Jan 2024 10:08:02 +0000
Subject: [PATCH] disable FB
---
kernel/drivers/xen/privcmd-buf.c | 11 +++--------
1 files changed, 3 insertions(+), 8 deletions(-)
diff --git a/kernel/drivers/xen/privcmd-buf.c b/kernel/drivers/xen/privcmd-buf.c
index de01a6d..dd5bbb6 100644
--- a/kernel/drivers/xen/privcmd-buf.c
+++ b/kernel/drivers/xen/privcmd-buf.c
@@ -140,8 +140,7 @@
if (!(vma->vm_flags & VM_SHARED))
return -EINVAL;
- vma_priv = kzalloc(sizeof(*vma_priv) + count * sizeof(void *),
- GFP_KERNEL);
+ vma_priv = kzalloc(struct_size(vma_priv, pages, count), GFP_KERNEL);
if (!vma_priv)
return -ENOMEM;
@@ -166,12 +165,8 @@
if (vma_priv->n_pages != count)
ret = -ENOMEM;
else
- for (i = 0; i < vma_priv->n_pages; i++) {
- ret = vm_insert_page(vma, vma->vm_start + i * PAGE_SIZE,
- vma_priv->pages[i]);
- if (ret)
- break;
- }
+ ret = vm_map_pages_zero(vma, vma_priv->pages,
+ vma_priv->n_pages);
if (ret)
privcmd_buf_vmapriv_free(vma_priv);
--
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