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base repository: qemu/qemu
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  • 4 commits
  • 6 files changed
  • 2 contributors

Commits on Dec 12, 2023

  1. target/i386: Fix 32-bit wrapping of pc/eip computation 

    In 32-bit mode, pc = eip + cs_base is also 32-bit, and must wrap.
Failure to do so results in incorrect memory exceptions to the guest.
Before 732d548, this was implicitly done via truncation to
target_ulong but only in qemu-system-i386, not qemu-system-x86_64.

To fix this, we must add conditional zero-extensions.
Since we have to test for 32 vs 64-bit anyway, note that cs_base
is always zero in 64-bit mode.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2022
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20231212172510.103305-1-richard.henderson@linaro.org>
    @rth7680
    rth7680 committed Dec 12, 2023
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  2. tcg: Reduce serial context atomicity earlier 

    Reduce atomicity while emitting opcodes, instead of later
during code generation.  This ensures that any helper called
also sees the reduced atomicity requirement.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2034
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20231212193542.149117-1-richard.henderson@linaro.org>
    @rth7680
    rth7680 committed Dec 12, 2023
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  3. Merge tag 'pull-tcg-20231212' of https://gitlab.com/rth7680/qemu into… 

    … staging

target/i386: Fix 32-bit wrapping of pc/eip computation (#2022)
tcg: Reduce serial context atomicity earlier (#2034)

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* tag 'pull-tcg-20231212' of https://gitlab.com/rth7680/qemu:
  tcg: Reduce serial context atomicity earlier
  target/i386: Fix 32-bit wrapping of pc/eip computation

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
    Stefan Hajnoczi committed Dec 12, 2023
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  4. Update version for v8.2.0-rc4 release 

    Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
    Stefan Hajnoczi committed Dec 12, 2023
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