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[v3,00/28] linux-user/i386: Properly align signal frame

Message ID 20240515150837.259747-1-richard.henderson@linaro.org (mailing list archive)
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Series linux-user/i386: Properly align signal frame | expand

Message

Richard Henderson May 15, 2024, 3:08 p.m. UTC 
v2: https://lore.kernel.org/qemu-devel/20240409050302.1523277-1-richard.henderson@linaro.org/

Disconnect fpstate from sigframe, just like the kernel does.
Return the separate portions of the frame from get_sigframe.
Alter all of the target fpu routines to access memory that
has already been translated and sized.

Changes for v3:
  - Address review issues (bonzini).
  - Rebase.

Patches needing review:
  02-target-i386-Convert-do_fldt-do_fstt-to-X86Access.patch
  19-linux-user-i386-Fix-mregparm-3-for-signal-deliver.patch
  23-target-i386-Honor-xfeatures-in-xrstor_sigcontext.patch


r~


Richard Henderson (28):
  target/i386: Add tcg/access.[ch]
  target/i386: Convert do_fldt, do_fstt to X86Access
  target/i386: Convert helper_{fbld,fbst}_ST0 to X86Access
  target/i386: Convert do_fldenv to X86Access
  target/i386: Convert do_fstenv to X86Access
  target/i386: Convert do_fsave, do_frstor to X86Access
  target/i386: Convert do_xsave_{fpu,mxcr,sse} to X86Access
  target/i386: Convert do_xrstor_{fpu,mxcr,sse} to X86Access
  tagret/i386: Convert do_fxsave, do_fxrstor to X86Access
  target/i386: Convert do_xsave_* to X86Access
  target/i386: Convert do_xrstor_* to X86Access
  target/i386: Split out do_xsave_chk
  target/i386: Add rbfm argument to cpu_x86_{xsave,xrstor}
  target/i386: Add {hw,sw}_reserved to X86LegacyXSaveArea
  linux-user/i386: Drop xfeatures_size from sigcontext arithmetic
  linux-user/i386: Remove xfeatures from target_fpstate_fxsave
  linux-user/i386: Replace target_fpstate_fxsave with X86LegacyXSaveArea
  linux-user/i386: Split out struct target_fregs_state
  linux-user/i386: Fix -mregparm=3 for signal delivery
  linux-user/i386: Return boolean success from restore_sigcontext
  linux-user/i386: Return boolean success from xrstor_sigcontext
  linux-user/i386: Fix allocation and alignment of fp state
  target/i386: Honor xfeatures in xrstor_sigcontext
  target/i386: Convert do_xsave to X86Access
  target/i386: Convert do_xrstor to X86Access
  target/i386: Pass host pointer and size to cpu_x86_{fsave,frstor}
  target/i386: Pass host pointer and size to cpu_x86_{fxsave,fxrstor}
  target/i386: Pass host pointer and size to cpu_x86_{xsave,xrstor}

 target/i386/cpu.h                |  57 ++-
 target/i386/tcg/access.h         |  40 ++
 linux-user/i386/signal.c         | 671 ++++++++++++++++++-------------
 target/i386/tcg/access.c         | 169 ++++++++
 target/i386/tcg/fpu_helper.c     | 561 ++++++++++++++++----------
 tests/tcg/x86_64/test-1648.c     |  33 ++
 target/i386/tcg/meson.build      |   1 +
 tests/tcg/x86_64/Makefile.target |   1 +
 8 files changed, 1024 insertions(+), 509 deletions(-)
 create mode 100644 target/i386/tcg/access.h
 create mode 100644 target/i386/tcg/access.c
 create mode 100644 tests/tcg/x86_64/test-1648.c

Comments

Philippe Mathieu-Daudé June 5, 2024, 7:06 p.m. UTC | #1 
On 15/5/24 17:08, Richard Henderson wrote:
> v2: https://lore.kernel.org/qemu-devel/20240409050302.1523277-1-richard.henderson@linaro.org/
> 
> Disconnect fpstate from sigframe, just like the kernel does.
> Return the separate portions of the frame from get_sigframe.
> Alter all of the target fpu routines to access memory that
> has already been translated and sized.
> 
> Changes for v3:
>    - Address review issues (bonzini).
>    - Rebase.
> 
> Patches needing review:
>    02-target-i386-Convert-do_fldt-do_fstt-to-X86Access.patch
>    19-linux-user-i386-Fix-mregparm-3-for-signal-deliver.patch
>    23-target-i386-Honor-xfeatures-in-xrstor_sigcontext.patch

Cc'ing Pierrick & Gustavo.
Pierrick Bouvier June 5, 2024, 7:16 p.m. UTC | #2 
I'll take a look, thanks.

On 6/5/24 12:06, Philippe Mathieu-Daudé wrote:
> On 15/5/24 17:08, Richard Henderson wrote:
>> v2: https://lore.kernel.org/qemu-devel/20240409050302.1523277-1-richard.henderson@linaro.org/
>>
>> Disconnect fpstate from sigframe, just like the kernel does.
>> Return the separate portions of the frame from get_sigframe.
>> Alter all of the target fpu routines to access memory that
>> has already been translated and sized.
>>
>> Changes for v3:
>>     - Address review issues (bonzini).
>>     - Rebase.
>>
>> Patches needing review:
>>     02-target-i386-Convert-do_fldt-do_fstt-to-X86Access.patch
>>     19-linux-user-i386-Fix-mregparm-3-for-signal-deliver.patch
>>     23-target-i386-Honor-xfeatures-in-xrstor_sigcontext.patch
> 
> Cc'ing Pierrick & Gustavo.
Richard Henderson June 5, 2024, 7:38 p.m. UTC | #3 
On 6/5/24 14:16, Pierrick Bouvier wrote:
> I'll take a look, thanks.
> 
> On 6/5/24 12:06, Philippe Mathieu-Daudé wrote:
>> On 15/5/24 17:08, Richard Henderson wrote:
>>> v2: 
>>> https://lore.kernel.org/qemu-devel/20240409050302.1523277-1-richard.henderson@linaro.org/
>>>
>>> Disconnect fpstate from sigframe, just like the kernel does.
>>> Return the separate portions of the frame from get_sigframe.
>>> Alter all of the target fpu routines to access memory that
>>> has already been translated and sized.
>>>
>>> Changes for v3:
>>>     - Address review issues (bonzini).
>>>     - Rebase.
>>>
>>> Patches needing review:
>>>     02-target-i386-Convert-do_fldt-do_fstt-to-X86Access.patch
>>>     19-linux-user-i386-Fix-mregparm-3-for-signal-deliver.patch
>>>     23-target-i386-Honor-xfeatures-in-xrstor_sigcontext.patch
>>
>> Cc'ing Pierrick & Gustavo.

Merged on 26 May.


r~