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[PATCH v2 07/17] linux-user: Fix guest_addr_valid vs reserved_va
From: |
Richard Henderson |
Subject: |
[PATCH v2 07/17] linux-user: Fix guest_addr_valid vs reserved_va |
Date: |
Thu, 4 Jun 2020 21:17:23 -0700 |
We must always use GUEST_ADDR_MAX, because even 32-bit hosts can
use -R <reserved_va> to restrict the memory address of the guest.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
include/exec/cpu_ldst.h | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h
index 3930362e20..066cf33f70 100644
--- a/include/exec/cpu_ldst.h
+++ b/include/exec/cpu_ldst.h
@@ -72,11 +72,10 @@ typedef uint64_t abi_ptr;
/* All direct uses of g2h and h2g need to go away for usermode softmmu. */
#define g2h(x) ((void *)((unsigned long)(abi_ptr)(x) + guest_base))
-#if HOST_LONG_BITS <= TARGET_VIRT_ADDR_SPACE_BITS
-#define guest_addr_valid(x) (1)
-#else
-#define guest_addr_valid(x) ((x) <= GUEST_ADDR_MAX)
-#endif
+static inline bool guest_addr_valid(abi_ptr x)
+{
+ return x <= GUEST_ADDR_MAX;
+}
static inline int guest_range_valid(unsigned long start, unsigned long len)
{
--
2.25.1
- [PATCH v2 03/17] linux-user: Check for overflow in access_ok, (continued)
- [PATCH v2 03/17] linux-user: Check for overflow in access_ok, Richard Henderson, 2020/06/05
- [PATCH v2 02/17] linux-user: Introduce PAGE_ANON, Richard Henderson, 2020/06/05
- [PATCH v2 04/17] linux-user: Tidy VERIFY_READ/VERIFY_WRITE, Richard Henderson, 2020/06/05
- [PATCH v2 05/17] bsd-user: Tidy VERIFY_READ/VERIFY_WRITE, Richard Henderson, 2020/06/05
- [PATCH v2 06/17] linux-user: Do not use guest_addr_valid for h2g_valid, Richard Henderson, 2020/06/05
- [PATCH v2 07/17] linux-user: Fix guest_addr_valid vs reserved_va,
Richard Henderson <=
- [PATCH v2 08/17] exec: Add support for TARGET_TAGGED_ADDRESSES, Richard Henderson, 2020/06/05
- [PATCH v2 09/17] linux-user/aarch64: Implement PR_TAGGED_ADDR_ENABLE, Richard Henderson, 2020/06/05
- [PATCH v2 10/17] linux-user/aarch64: Implement PR_MTE_TCF and PR_MTE_TAG, Richard Henderson, 2020/06/05
- [PATCH v2 11/17] linux-user/aarch64: Implement PROT_MTE, Richard Henderson, 2020/06/05
- [PATCH v2 12/17] linux-user/aarch64: Pass syndrome to EXC_*_ABORT, Richard Henderson, 2020/06/05