Make especially kernels without CONFIG_XEN_PV more efficient by
using cpu_feature_enabled(X86_FEATURE_XENPV) instead of boot_cpu_has()
and friends.
Changes in V2:
- new patch 4
Juergen Gross (5):
x86: add X86_FEATURE_XENPV to disabled-features.h
x86: remove unneeded 64-bit dependency in arch_enter_from_user_mode()
x86: drop 32-bit Xen PV guest code in update_task_stack()
x86: remove X86_FEATURE_XENPV usage in setup_cpu_entry_area()
x86: switch to cpu_feature_enabled() for X86_FEATURE_XENPV
arch/x86/include/asm/disabled-features.h | 8 +++++++-
arch/x86/include/asm/entry-common.h | 4 ++--
arch/x86/include/asm/switch_to.h | 7 ++-----
arch/x86/kernel/cpu/amd.c | 2 +-
arch/x86/kernel/cpu/bugs.c | 2 +-
arch/x86/kernel/cpu/hygon.c | 2 +-
arch/x86/kernel/process_64.c | 4 ++--
arch/x86/kernel/topology.c | 2 +-
arch/x86/mm/cpu_entry_area.c | 8 ++------
9 files changed, 19 insertions(+), 20 deletions(-)
--
2.35.3
On 04.11.22 08:26, Juergen Gross wrote:
> Make especially kernels without CONFIG_XEN_PV more efficient by
> using cpu_feature_enabled(X86_FEATURE_XENPV) instead of boot_cpu_has()
> and friends.
>
> Changes in V2:
> - new patch 4
>
> Juergen Gross (5):
> x86: add X86_FEATURE_XENPV to disabled-features.h
> x86: remove unneeded 64-bit dependency in arch_enter_from_user_mode()
> x86: drop 32-bit Xen PV guest code in update_task_stack()
> x86: remove X86_FEATURE_XENPV usage in setup_cpu_entry_area()
> x86: switch to cpu_feature_enabled() for X86_FEATURE_XENPV
>
> arch/x86/include/asm/disabled-features.h | 8 +++++++-
> arch/x86/include/asm/entry-common.h | 4 ++--
> arch/x86/include/asm/switch_to.h | 7 ++-----
> arch/x86/kernel/cpu/amd.c | 2 +-
> arch/x86/kernel/cpu/bugs.c | 2 +-
> arch/x86/kernel/cpu/hygon.c | 2 +-
> arch/x86/kernel/process_64.c | 4 ++--
> arch/x86/kernel/topology.c | 2 +-
> arch/x86/mm/cpu_entry_area.c | 8 ++------
> 9 files changed, 19 insertions(+), 20 deletions(-)
>
The patches have all an "Ack" by Dave. I think this series should go in
via the tip tree, no?
Juergen