b2ea6450d8
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> |
||
|---|---|---|
| .. | ||
| sysemu | ||
| user | ||
| bpt_helper.c | ||
| cc_helper_template.h.inc | ||
| cc_helper.c | ||
| decode-new.c.inc | ||
| decode-new.h | ||
| emit.c.inc | ||
| excp_helper.c | ||
| fpu_helper.c | ||
| helper-tcg.h | ||
| int_helper.c | ||
| mem_helper.c | ||
| meson.build | ||
| misc_helper.c | ||
| mpx_helper.c | ||
| ops_sse_header.h.inc | ||
| seg_helper.c | ||
| seg_helper.h | ||
| shift_helper_template.h.inc | ||
| tcg-cpu.c | ||
| tcg-cpu.h | ||
| tcg-stub.c | ||
| translate.c | ||