diff mbox series

[v2,21/24] accel/tcg: Accept more page flags in page_check_range

Message ID 20230707204054.8792-24-richard.henderson@linaro.org
State New
Headers show
Series linux-user: mmap range fixes | expand

Commit Message

Richard Henderson July 7, 2023, 8:40 p.m. UTC 
Only PAGE_WRITE needs special attention, all others can be
handled as we do for PAGE_READ.  Adjust the mask.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 accel/tcg/user-exec.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Philippe Mathieu-Daudé July 8, 2023, 5:40 p.m. UTC | #1 
On 7/7/23 22:40, Richard Henderson wrote:
> Only PAGE_WRITE needs special attention, all others can be
> handled as we do for PAGE_READ.  Adjust the mask.
> 
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>   accel/tcg/user-exec.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
diff mbox series

Patch

diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index e4f9563730..1e8fcaf6b0 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -561,8 +561,8 @@  int page_check_range(target_ulong start, target_ulong len, int flags)
         }
 
         missing = flags & ~p->flags;
-        if (missing & PAGE_READ) {
-            ret = -1; /* page not readable */
+        if (missing & ~PAGE_WRITE) {
+            ret = -1; /* page doesn't match */
             break;
         }
         if (missing & PAGE_WRITE) {