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[PULL,02/14] accel/tcg: Fix user-only probe_access_internal plugin check

Message ID 20241115205849.266094-3-richard.henderson@linaro.org
State New
Headers show
Series [PULL,01/14] linux-user: Fix setreuid and setregid to use direct syscalls | expand

Commit Message

Richard Henderson Nov. 15, 2024, 8:58 p.m. UTC 
The acc_flag check for write should have been against PAGE_WRITE_ORG,
not PAGE_WRITE.  But it is better to combine two acc_flag checks
to a single check against access_type.  This matches the system code
in cputlb.c.

Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2647
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: 20241111145002.144995-1-richard.henderson@linaro.org
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
---
 accel/tcg/user-exec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index aa8af52cc3..06016eb030 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -800,7 +800,7 @@  static int probe_access_internal(CPUArchState *env, vaddr addr,
     if (guest_addr_valid_untagged(addr)) {
         int page_flags = page_get_flags(addr);
         if (page_flags & acc_flag) {
-            if ((acc_flag == PAGE_READ || acc_flag == PAGE_WRITE)
+            if (access_type != MMU_INST_FETCH
                 && cpu_plugin_mem_cbs_enabled(env_cpu(env))) {
                 return TLB_MMIO;
             }