Re: [PATCH v2 0/5] x86: Switch X86_FEATURE_XENPV to cpu_feature_enabled() use

From: Juergen Gross
Date: Tue Nov 22 2022 - 07:47:25 EST


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

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