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base repository: qemu/qemu
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  • 3 commits
  • 2 files changed
  • 3 contributors

Commits on Aug 4, 2023

  1. target/i386: Check CR0.TS before enter_mmx 

    When CR0.TS=1, execution of x87 FPU, MMX, and some SSE instructions will
cause a Device Not Available (DNA) exception (#NM). System software uses
this exception event to lazily context switch FPU state.

Before this patch, enter_mmx helpers may be generated just before #NM
generation, prematurely resetting FPU state before the guest has a
chance to save it.

Signed-off-by: Matt Borgerson <contact@mborgerson.com>
Message-ID: <CADc=-s5F10muEhLs4f3mxqsEPAHWj0XFfOC2sfFMVHrk9fcpMg@mail.gmail.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @mborgerson @bonzini
    mborgerson authored and bonzini committed Aug 4, 2023
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  2. ci: install meson in CirrusCI KVM build environment 

    scripts/archive-source.sh needs meson in order to download the subprojects,
therefore meson needs to be part of the host environment in which VM-based
build jobs run.

Fixes: 2019cab ("meson: subprojects: replace submodules with wrap files", 2023-06-06)
Reported-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Aug 4, 2023
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  3. Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging 

    * fix VM build jobs on CirrusCI
* fix MMX instructions clobbering x87 state before raising #NM

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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  ci: install meson in CirrusCI KVM build environment
  target/i386: Check CR0.TS before enter_mmx

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
    @rth7680
    rth7680 committed Aug 4, 2023
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