PING!
On 10.07.23 14:29, Juergen Gross wrote:
> Any comments?
>
> On 08.06.23 16:03, Juergen Gross wrote:
>> This is a small series getting rid of paravirt patching by switching
>> completely to alternative patching for the same functionality.
>>
>> The basic idea is to add the capability to switch from indirect to
>> direct calls via a special alternative patching option.
>>
>> This removes _some_ of the paravirt macro maze, but most of it needs
>> to stay due to the need of hiding the call instructions from the
>> compiler in order to avoid needless register save/restore.
>>
>> What is going away is the nasty stacking of alternative and paravirt
>> patching and (of course) the special .parainstructions linker section.
>>
>> I have tested the series on bare metal and as Xen PV domain to still
>> work.
>>
>> RFC because I'm quite sure there will be some objtool work needed
>> (at least removing the specific paravirt handling).
>>
>> Juergen Gross (3):
>> x86/paravirt: move some functions and defines to alternative
>> x86/alternative: add indirect call patching
>> x86/paravirt: switch mixed paravirt/alternative calls to alternative_2
>>
>> arch/x86/include/asm/alternative.h | 26 +++++-
>> arch/x86/include/asm/paravirt.h | 39 ++-------
>> arch/x86/include/asm/paravirt_types.h | 68 +++-------------
>> arch/x86/include/asm/qspinlock_paravirt.h | 4 +-
>> arch/x86/include/asm/text-patching.h | 12 ---
>> arch/x86/kernel/alternative.c | 99 +++++++++++------------
>> arch/x86/kernel/callthunks.c | 17 ++--
>> arch/x86/kernel/kvm.c | 4 +-
>> arch/x86/kernel/module.c | 20 ++---
>> arch/x86/kernel/paravirt.c | 54 ++-----------
>> arch/x86/kernel/vmlinux.lds.S | 13 ---
>> arch/x86/tools/relocs.c | 2 +-
>> arch/x86/xen/irq.c | 2 +-
>> 13 files changed, 111 insertions(+), 249 deletions(-)
>>
>