[PATCH v7 15/31] exec: Rename guest_{addr,range}_valid to *_untagged

From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org
Subject: [PATCH v7 15/31] exec: Rename guest_{addr,range}_valid to *_untagged
Date: Fri, 12 Feb 2021 10:48:46 -0800	[thread overview]
Message-ID: <20210212184902.1251044-16-richard.henderson@linaro.org> (raw)
In-Reply-To: <20210212184902.1251044-1-richard.henderson@linaro.org>

The places that use these are better off using untagged
addresses, so do not provide a tagged versions.  Rename
to make it clear about the address type.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 include/exec/cpu_ldst.h |  4 ++--
 linux-user/qemu.h       |  4 ++--
 accel/tcg/user-exec.c   |  3 ++-
 linux-user/mmap.c       | 12 ++++++------
 linux-user/syscall.c    |  2 +-
 5 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h
index c54069e3cd..ce6ce82618 100644
--- a/include/exec/cpu_ldst.h
+++ b/include/exec/cpu_ldst.h
@@ -87,12 +87,12 @@ static inline void *g2h(CPUState *cs, abi_ptr x)
     return g2h_untagged(cpu_untagged_addr(cs, x));
 }
 
-static inline bool guest_addr_valid(abi_ulong x)
+static inline bool guest_addr_valid_untagged(abi_ulong x)
 {
     return x <= GUEST_ADDR_MAX;
 }
 
-static inline bool guest_range_valid(abi_ulong start, abi_ulong len)
+static inline bool guest_range_valid_untagged(abi_ulong start, abi_ulong len)
 {
     return len - 1 <= GUEST_ADDR_MAX && start <= GUEST_ADDR_MAX - len + 1;
 }
diff --git a/linux-user/qemu.h b/linux-user/qemu.h
index ba122a7903..b3ccffbf0f 100644
--- a/linux-user/qemu.h
+++ b/linux-user/qemu.h
@@ -494,8 +494,8 @@ extern unsigned long guest_stack_size;
 static inline bool access_ok(int type, abi_ulong addr, abi_ulong size)
 {
     if (size == 0
-        ? !guest_addr_valid(addr)
-        : !guest_range_valid(addr, size)) {
+        ? !guest_addr_valid_untagged(addr)
+        : !guest_range_valid_untagged(addr, size)) {
         return false;
     }
     return page_check_range((target_ulong)addr, size, type) == 0;
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index fa1847b2a6..0d8cc27b21 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -213,7 +213,8 @@ static int probe_access_internal(CPUArchState *env, target_ulong addr,
         g_assert_not_reached();
     }
 
-    if (!guest_addr_valid(addr) || page_check_range(addr, 1, flags) < 0) {
+    if (!guest_addr_valid_untagged(addr) ||
+        page_check_range(addr, 1, flags) < 0) {
         if (nonfault) {
             return TLB_INVALID_MASK;
         } else {
diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index 088c50592c..6690384752 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -119,7 +119,7 @@ int target_mprotect(abi_ulong start, abi_ulong len, int target_prot)
     }
     len = TARGET_PAGE_ALIGN(len);
     end = start + len;
-    if (!guest_range_valid(start, len)) {
+    if (!guest_range_valid_untagged(start, len)) {
         return -TARGET_ENOMEM;
     }
     if (len == 0) {
@@ -528,7 +528,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int target_prot,
          * It can fail only on 64-bit host with 32-bit target.
          * On any other target/host host mmap() handles this error correctly.
          */
-        if (end < start || !guest_range_valid(start, len)) {
+        if (end < start || !guest_range_valid_untagged(start, len)) {
             errno = ENOMEM;
             goto fail;
         }
@@ -669,7 +669,7 @@ int target_munmap(abi_ulong start, abi_ulong len)
     if (start & ~TARGET_PAGE_MASK)
         return -TARGET_EINVAL;
     len = TARGET_PAGE_ALIGN(len);
-    if (len == 0 || !guest_range_valid(start, len)) {
+    if (len == 0 || !guest_range_valid_untagged(start, len)) {
         return -TARGET_EINVAL;
     }
 
@@ -727,9 +727,9 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
     int prot;
     void *host_addr;
 
-    if (!guest_range_valid(old_addr, old_size) ||
+    if (!guest_range_valid_untagged(old_addr, old_size) ||
         ((flags & MREMAP_FIXED) &&
-         !guest_range_valid(new_addr, new_size))) {
+         !guest_range_valid_untagged(new_addr, new_size))) {
         errno = ENOMEM;
         return -1;
     }
@@ -777,7 +777,7 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
 
             if (host_addr != MAP_FAILED) {
                 /* Check if address fits target address space */
-                if (!guest_range_valid(h2g(host_addr), new_size)) {
+                if (!guest_range_valid_untagged(h2g(host_addr), new_size)) {
                     /* Revert mremap() changes */
                     host_addr = mremap(g2h_untagged(old_addr),
                                        new_size, old_size, flags);
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 4451f8e4f0..30a5021509 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4608,7 +4608,7 @@ static inline abi_ulong do_shmat(CPUArchState *cpu_env,
             return -TARGET_EINVAL;
         }
     }
-    if (!guest_range_valid(shmaddr, shm_info.shm_segsz)) {
+    if (!guest_range_valid_untagged(shmaddr, shm_info.shm_segsz)) {
         return -TARGET_EINVAL;
     }
 
-- 
2.25.1


