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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org
Subject: [PATCH v3 10/21] linux-user: Fix guest_addr_valid vs reserved_va
Date: Fri, 15 Jan 2021 12:46:34 -1000	[thread overview]
Message-ID: <20210115224645.1196742-11-richard.henderson@linaro.org> (raw)
In-Reply-To: <20210115224645.1196742-1-richard.henderson@linaro.org>

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 4e6ef3d542..e62f4fba00 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 *)((uintptr_t)(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_ulong x)
+{
+    return x <= GUEST_ADDR_MAX;
+}
 
 static inline bool guest_range_valid(abi_ulong start, abi_ulong len)
 {
-- 
2.25.1



  parent reply	other threads:[~2021-01-15 22:49 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-15 22:46 [PATCH v3 00/21] target-arm: Implement ARMv8.5-MemTag, user mode Richard Henderson
2021-01-15 22:46 ` [PATCH v3 01/21] tcg: Introduce target-specific page data for user-only Richard Henderson
2021-01-19 16:53   ` Peter Maydell
2021-01-15 22:46 ` [PATCH v3 02/21] linux-user: Introduce PAGE_ANON Richard Henderson
2021-01-15 22:46 ` [PATCH v3 03/21] exec: Use uintptr_t for guest_base Richard Henderson
2021-01-19 16:56   ` Peter Maydell
2021-01-15 22:46 ` [PATCH v3 04/21] exec: Use uintptr_t in cpu_ldst.h Richard Henderson
2021-01-19 16:56   ` Peter Maydell
2021-01-15 22:46 ` [PATCH v3 05/21] exec: Improve types for guest_addr_valid Richard Henderson
2021-01-19 16:57   ` Peter Maydell
2021-01-15 22:46 ` [PATCH v3 06/21] linux-user: Check for overflow in access_ok Richard Henderson
2021-01-15 22:46 ` [PATCH v3 07/21] linux-user: Tidy VERIFY_READ/VERIFY_WRITE Richard Henderson
2021-01-15 22:46 ` [PATCH v3 08/21] bsd-user: " Richard Henderson
2021-01-16 16:28   ` Warner Losh
2021-01-15 22:46 ` [PATCH v3 09/21] linux-user: Do not use guest_addr_valid for h2g_valid Richard Henderson
2021-01-19 16:59   ` Peter Maydell
2021-01-15 22:46 ` Richard Henderson [this message]
2021-01-19 17:03   ` [PATCH v3 10/21] linux-user: Fix guest_addr_valid vs reserved_va Peter Maydell
2021-01-19 17:41     ` Richard Henderson
2021-01-15 22:46 ` [PATCH v3 11/21] exec: Add support for TARGET_TAGGED_ADDRESSES Richard Henderson
2021-01-22 14:13   ` Peter Maydell
2021-01-26 17:10     ` Richard Henderson
2021-01-15 22:46 ` [PATCH v3 12/21] linux-user/aarch64: Implement PR_TAGGED_ADDR_ENABLE Richard Henderson
2021-01-22 11:36   ` Peter Maydell
2021-01-22 11:53   ` Peter Maydell
2021-01-22 12:02     ` Peter Maydell
2021-01-15 22:46 ` [PATCH v3 13/21] linux-user/aarch64: Implement PR_MTE_TCF and PR_MTE_TAG Richard Henderson
2021-01-22 11:48   ` Peter Maydell
2021-01-15 22:46 ` [PATCH v3 14/21] linux-user/aarch64: Implement PROT_MTE Richard Henderson
2021-01-15 22:46 ` [PATCH v3 15/21] target/arm: Split out syndrome.h from internals.h Richard Henderson
2021-01-19 17:07   ` Peter Maydell
2021-01-15 22:46 ` [PATCH v3 16/21] linux-user/aarch64: Pass syndrome to EXC_*_ABORT Richard Henderson
2021-01-19 17:12   ` Peter Maydell
2021-01-15 22:46 ` [PATCH v3 17/21] linux-user/aarch64: Signal SEGV_MTESERR for sync tag check fault Richard Henderson
2021-01-22 12:03   ` Peter Maydell
2021-01-15 22:46 ` [PATCH v3 18/21] linux-user/aarch64: Signal SEGV_MTEAERR for async tag check error Richard Henderson
2021-01-22 13:59   ` Peter Maydell
2021-01-28  8:49     ` Richard Henderson
2021-01-28 10:44       ` Peter Maydell
2021-01-15 22:46 ` [PATCH v3 19/21] target/arm: Add allocation tag storage for user mode Richard Henderson
2021-01-22 14:05   ` Peter Maydell
2021-01-15 22:46 ` [PATCH v3 20/21] target/arm: Enable MTE for user-only Richard Henderson
2021-01-22 14:02   ` Peter Maydell
2021-01-15 22:46 ` [PATCH v3 21/21] tests/tcg/aarch64: Add mte smoke tests Richard Henderson
2021-01-22 14:04   ` Peter Maydell
2021-01-15 23:15 ` [PATCH v3 00/21] target-arm: Implement ARMv8.5-MemTag, user mode no-reply

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