From: Juergen Gross <jgross@suse.com>
To: linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org,
x86@kernel.org
Cc: Juergen Gross <jgross@suse.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>, Pu Wen <puwen@hygon.cn>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>
Subject: [PATCH 0/4] Switch X86_FEATURE_XENPV to cpu_feature_enabled() use
Date: Thu, 3 Nov 2022 12:36:32 +0100 [thread overview]
Message-ID: <20221103113636.25543-1-jgross@suse.com> (raw)
Make especially kernels without CONFIG_XEN_PV more efficient by
using cpu_feature_enabled(X86_FEATURE_XENPV) instead of boot_cpu_has()
and friends.
Juergen Gross (4):
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: 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 | 2 +-
9 files changed, 18 insertions(+), 15 deletions(-)
--
2.35.3
next reply other threads:[~2022-11-03 11:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-03 11:36 Juergen Gross [this message]
2022-11-03 11:36 ` [PATCH 1/4] x86: add X86_FEATURE_XENPV to disabled-features.h Juergen Gross
2022-11-03 11:36 ` [PATCH 2/4] x86: remove unneeded 64-bit dependency in arch_enter_from_user_mode() Juergen Gross
2022-11-03 11:36 ` [PATCH 3/4] x86: drop 32-bit Xen PV guest code in update_task_stack() Juergen Gross
2022-11-03 11:36 ` [PATCH 4/4] x86: switch to cpu_feature_enabled() for X86_FEATURE_XENPV Juergen Gross
2022-11-03 13:19 ` Brian Gerst
2022-11-03 13:24 ` Juergen Gross
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