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diff --git a/SFFS/qemu.mdwn b/SFFS/qemu.mdwn
index 1fdd894b455ca7300ec7414be9e2eead0cc893e8..100e598b21c25747fd3f9d5b46879955dd2c51c9 100644 (file)
--- a/SFFS/qemu.mdwn
+++ b/SFFS/qemu.mdwn
@@ -4,39 +4,57 @@ Useful Links:
 
 * bugreport: <https://bugs.libre-soc.org/show_bug.cgi?id=1132>
 * (External) [qemu source code](https://github.com/qemu/qemu)
-* (External) [qemu cpu flags for x86*](https://www.linux-kvm.org/page/Tuning_KVM)
+* (External) [qemu cpu flags for x86](https://www.linux-kvm.org/page/Tuning_KVM)
   
 ## Reasoning:
 
-Libre-SOC builds upon the OpenPOWER ISA v3.0 but does not include many
-parts of the architecture typically found on production silicon, like
-AltiVec, VSX, and 128-bit hardware floating point. There are no commercially available chips that support OpenPOWER ISA v3.0 SFFS without VSX, AltiVec, and 128-bit hardware floating point.
+Libre-SOC builds upon the OpenPOWER ISA v3.0 but does not include
+many parts of the architecture typically found on production silicon,
+like AltiVec, VSX, and 128-bit hardware floating point. There are no
+commercially available chips that support OpenPOWER ISA v3.0 SFFS without
+VSX, AltiVec, and 128-bit hardware floating point.
 
-Because of this, we are stuck in a chicken and egg problem where we need the chip to test software, but we also need to test whether software is compliant with SFFS by using such a chip. This is where QEMU as an emulator can help us.
+Because of this, we are stuck in a chicken and egg problem where we need
+the chip to test software, but we also need to test whether software
+is compliant with SFFS by using such a chip. This is where QEMU as an
+emulator can help us.
 
-The goal is to add a CPU definition in QEMU that specifically emulates an OpenPOWER ISA v3.0 SFFS chip that we can use to run tests and full operating system images on.
+The goal is to add a CPU definition in QEMU that specifically emulates
+an OpenPOWER ISA v3.0 SFFS chip that we can use to run tests and full
+operating system images on.
 
 ## Progress and setbacks
 
 ### We have first tried using POWER7 which is available on QEMU
 
 - POWER7 runs little endian without VSX, but is only ISA 2.06 compliant.
-* The assumption was that Any additions from ISA 3.0 would be emulated by the Linux kernel, that however did not work.
-* We tried booting [Gentoo SFFS](https://libre-soc.org/SFFS/gentoo_bootstrap/) with a kernel compiled for POWER9, POWER8, and POWER7, all seem to fail with a kernel panic due to missing instructions.
+* The assumption was that Any additions from ISA 3.0 would be emulated
+  by the Linux kernel, that however did not work.
+* We tried booting [[gentoo_bootstrap]] with a kernel compiled
+  for POWER9, POWER8, and POWER7, all seem to fail with a kernel panic
+  due to missing instructions.
   * The POWER9 instructions were VSX from the v3.0 ISA
   * likewise the POWER8 but also including some v2.08 instructions deprecated in v3.0
   * POWER7 included some v2.07 instructions definitely deprecated in v3.0
-* We also tried booting it with a kernel built for all three POWER versions mentioned earlier and also disabling VSX and/or AltiVec, still fails with a kernel panic due to missing instructions.
+* We also tried booting it with a kernel built for all three POWER
+versions mentioned earlier and also disabling VSX and/or AltiVec, still
+fails with a kernel panic due to missing instructions.
 
 ### We have tried patching QEMU's definition for POWER9 to exclude VSX and AltiVec
 
 - This did not work and needs considerable amounts of patching.
-* The relevant files are `tcg/ppc/tcg-target.h` and `target/ppc/{compat.c,cpu.c,cpu.h,cpu_init.c,cpu_models.c,cpu_models.h,cpu-qom.h,cpu-param.h}` none seemed to work when removing such features.
+* The relevant files are `tcg/ppc/tcg-target.h` and
+  `target/ppc/{compat.c,cpu.c,cpu.h,cpu_init.c,cpu_models.c,cpu_models.h,cpu-qom.h,cpu-param.h}`
+  none seemed to work when removing such features.
 
 ### We have researched in length if the CPU capabilities feature of QEMU is available on POWER
 
-* It is not available and needs to be added in, unlike x86* and some other architectures that QEMU supports.
-* However, it being a feature of QEMU to start means patching it in will be simpler than adding a fresh feature that was not available in the code before.
+* It is not available and needs to be added in, unlike x86 and some
+  other architectures that QEMU supports.
+* However, it being a feature of QEMU to start means patching it in
+  will be simpler than adding a fresh feature that was not available in
+  the code before.
 
 ## Conclusion as of 25 Aug 2023:
-This task will need a considerable amount of research and work
+
+This task will need a considerable amount of additional research and work