From: Richard Henderson <richard.hender...@linaro.org>
These constants are only ever used with access_ok, and friends.
Rather than translating them to PAGE_* bits, let them equal
the PAGE_* bits to begin.
Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
Message-id: 20210212184902.1251044-8-richard.hender...@linaro.org
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
---
linux-user/qemu.h | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/linux-user/qemu.h b/linux-user/qemu.h
index 441ba6a78bb..9251337daf2 100644
--- a/linux-user/qemu.h
+++ b/linux-user/qemu.h
@@ -488,8 +488,8 @@ extern unsigned long guest_stack_size;
/* user access */
-#define VERIFY_READ 0
-#define VERIFY_WRITE 1 /* implies read access */
+#define VERIFY_READ PAGE_READ
+#define VERIFY_WRITE (PAGE_READ | PAGE_WRITE)
static inline bool access_ok(int type, abi_ulong addr, abi_ulong size)
{
@@ -501,9 +501,7 @@ static inline bool access_ok(int type, abi_ulong addr,
abi_ulong size)
!guest_addr_valid(addr + size - 1))) {
return false;
}
- return page_check_range((target_ulong)addr, size,
- (type == VERIFY_READ) ? PAGE_READ :
- (PAGE_READ | PAGE_WRITE)) == 0;
+ return page_check_range((target_ulong)addr, size, type) == 0;
}
/* NOTE __get_user and __put_user use host pointers and don't check access.
--
2.20.1
