From: Adrian Hunter <adrian.hunter@intel.com>
To: Dave Hansen <dave.hansen@linux.intel.com>,
pbonzini@redhat.com, seanjc@google.com, vannapurve@google.com
Cc: Tony Luck <tony.luck@intel.com>, Borislav Petkov <bp@alien8.de>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
x86@kernel.org, H Peter Anvin <hpa@zytor.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
rick.p.edgecombe@intel.com, kirill.shutemov@linux.intel.com,
kai.huang@intel.com, reinette.chatre@intel.com,
xiaoyao.li@intel.com, tony.lindgren@linux.intel.com,
binbin.wu@linux.intel.com, isaku.yamahata@intel.com,
yan.y.zhao@intel.com, chao.gao@intel.com
Subject: [PATCH V2 0/2] x86/tdx: Skip clearing reclaimed pages unless X86_BUG_TDX_PW_MCE is present
Date: Thu, 3 Jul 2025 18:37:10 +0300 [thread overview]
Message-ID: <20250703153712.155600-1-adrian.hunter@intel.com> (raw)
Hi
Here are 2 small self-explanatory patches related to clearing TDX private
pages.
Patch 1 is a minor tidy-up.
In patch 2, by skipping the clearing step, shutdown time can improve by
up to 40%.
Changes in V2 (as requested by Dave):
x86/tdx: Eliminate duplicate code in tdx_clear_page()
Rename reset_tdx_pages() to tdx_quirk_reset_paddr()
Call tdx_quirk_reset_paddr() directly
x86/tdx: Skip clearing reclaimed pages unless X86_BUG_TDX_PW_MCE is present
Improve the comment
Adrian Hunter (2):
x86/tdx: Eliminate duplicate code in tdx_clear_page()
x86/tdx: Skip clearing reclaimed pages unless X86_BUG_TDX_PW_MCE is present
arch/x86/include/asm/tdx.h | 2 ++
arch/x86/kvm/vmx/tdx.c | 25 +++----------------------
arch/x86/virt/vmx/tdx/tdx.c | 13 +++++++++++--
3 files changed, 16 insertions(+), 24 deletions(-)
Regards
Adrian
next reply other threads:[~2025-07-03 15:37 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-03 15:37 Adrian Hunter [this message]
2025-07-03 15:37 ` [PATCH V2 1/2] x86/tdx: Eliminate duplicate code in tdx_clear_page() Adrian Hunter
2025-07-03 16:34 ` Kirill A. Shutemov
2025-07-04 6:44 ` Binbin Wu
2025-07-04 15:33 ` Xiaoyao Li
2025-07-07 2:08 ` Huang, Kai
2025-07-07 17:31 ` Edgecombe, Rick P
2025-07-03 15:37 ` [PATCH V2 2/2] x86/tdx: Skip clearing reclaimed pages unless X86_BUG_TDX_PW_MCE is present Adrian Hunter
2025-07-03 16:44 ` Kirill A. Shutemov
2025-07-03 17:06 ` Vishal Annapurve
2025-07-04 5:37 ` Adrian Hunter
2025-07-07 23:31 ` Vishal Annapurve
2025-07-04 1:32 ` Xiaoyao Li
2025-07-04 6:44 ` Binbin Wu
2025-07-07 2:09 ` Huang, Kai
2025-07-07 3:16 ` Chao Gao
2025-07-07 4:23 ` Dave Hansen
2025-07-07 7:15 ` Chao Gao
2025-07-07 11:39 ` Huang, Kai
2025-07-07 14:32 ` Dave Hansen
2025-07-07 18:15 ` Edgecombe, Rick P
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