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| author | fanwj@mail.ustc.edu.cn <fanwj@mail.ustc.edu.cn> | 2023-02-08 23:49:12 +0800 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2023-03-10 20:50:11 +0100 |
| commit | 2732c739d846fc7a1972e984d71a3de0d3eef77b (patch) | |
| tree | 4e8e5b28b84e36479583e41b8ca0cecc07ae4533 /linux-user/main.c | |
| parent | e64c6d42b652b4acf10d83e1bc86d4fd4ce28ef2 (diff) | |
| download | focaccia-qemu-2732c739d846fc7a1972e984d71a3de0d3eef77b.tar.gz focaccia-qemu-2732c739d846fc7a1972e984d71a3de0d3eef77b.zip | |
linux-user: fix bug about incorrect base addresss of gdt on i386 and x86_64
On linux user mode, CPUX86State::gdt::base from Different CPUX86State Objects have same value, It is incorrect! Every CPUX86State::gdt::base Must points to independent memory space. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1405 Signed-off-by: fanwenjie <fanwj@mail.ustc.edu.cn> Message-Id: <4172b90.58b08.18631b77860.Coremail.fanwj@mail.ustc.edu.cn> [lv: remove unnecessary casts, split overlong line] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user/main.c')
| -rw-r--r-- | linux-user/main.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index 798fdc0bce..47b0c0fc43 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -238,6 +238,14 @@ CPUArchState *cpu_copy(CPUArchState *env) new_cpu->tcg_cflags = cpu->tcg_cflags; memcpy(new_env, env, sizeof(CPUArchState)); +#if defined(TARGET_I386) || defined(TARGET_X86_64) + new_env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, + PROT_READ | PROT_WRITE, + MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); + memcpy(g2h_untagged(new_env->gdt.base), g2h_untagged(env->gdt.base), + sizeof(uint64_t) * TARGET_GDT_ENTRIES); + OBJECT(new_cpu)->free = OBJECT(cpu)->free; +#endif /* Clone all break/watchpoints. Note: Once we support ptrace with hw-debug register access, make sure |