commit d9c5858570a57f374b71216c5da39ee381fa92f5
author Richard Henderson <richard.henderson@linaro.org> Fri Feb 12 10:48:32 2021 -0800
committer Peter Maydell <peter.maydell@linaro.org> Tue Feb 16 11:04:52 2021 +0000
tree 993ffb46c24da50b9b88ab1269a889ab994ccd58
parent 8ba4bca570ace1e60614a0808631a517cf5df67a

tcg: Introduce target-specific page data for user-only

This data can be allocated by page_alloc_target_data() and
released by page_set_flags(start, end, prot | PAGE_RESET).

This data will be used to hold tag memory for AArch64 MTE.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210212184902.1251044-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

linux-user/syscall.c

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 36b0901..0c2d660 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4643,8 +4643,8 @@
     raddr=h2g((unsigned long)host_raddr);
 
     page_set_flags(raddr, raddr + shm_info.shm_segsz,
-                   PAGE_VALID | PAGE_READ |
-                   ((shmflg & SHM_RDONLY)? 0 : PAGE_WRITE));
+                   PAGE_VALID | PAGE_RESET | PAGE_READ |
+                   (shmflg & SHM_RDONLY ? 0 : PAGE_WRITE));
 
     for (i = 0; i < N_SHM_REGIONS; i++) {
         if (!shm_regions[i].in_use) {