linux-kernel - Re: [PATCH V4 2/2] arm64/sysreg: Replace TCR

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <554e507a-1a68-4ae9-9345-5aea0a81ba2b@arm.com>
Date: Fri, 19 Sep 2025 14:52:40 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: Will Deacon <will@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org,
 Catalin Marinas <catalin.marinas@....com>, Marc Zyngier <maz@...nel.org>,
 Oliver Upton <oliver.upton@...ux.dev>, Mark Brown <broonie@...nel.org>,
 Ryan Roberts <ryan.roberts@....com>, kvmarm@...ts.linux.dev,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH V4 2/2] arm64/sysreg: Replace TCR_EL1 field macros

On 18/09/25 5:38 PM, Will Deacon wrote:
> On Sun, Sep 07, 2025 at 06:00:00PM +0530, Anshuman Khandual wrote:
>> This just replaces all used TCR_EL1 field macros with tools sysreg variant
>> based fields and subsequently drops them from the header (pgtable-hwdef.h)
>> and moves all required macros into KVM header (asm/kvm_arm.h) for continued
>> usage in KVM.
>>
>> Cc: Catalin Marinas <catalin.marinas@....com>
>> Cc: Will Deacon <will@...nel.org>
>> Cc: Marc Zyngier <maz@...nel.org>
>> Cc: Mark Brown <broonie@...nel.org>
>> Cc: kvmarm@...ts.linux.dev
>> Cc: linux-arm-kernel@...ts.infradead.org
>> Cc: linux-kernel@...r.kernel.org
>> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
>> ---
>> Changes in V4:
>>
>> - Dropped all unused TCR_XXX macros while moving into KVM header
>>
>>  arch/arm64/include/asm/assembler.h     |  6 +-
>>  arch/arm64/include/asm/cputype.h       |  2 +-
>>  arch/arm64/include/asm/kvm_arm.h       | 43 +++++++++++
>>  arch/arm64/include/asm/mmu_context.h   |  4 +-
>>  arch/arm64/include/asm/pgtable-hwdef.h | 98 +-------------------------
>>  arch/arm64/include/asm/pgtable-prot.h  |  2 +-
>>  arch/arm64/kernel/cpufeature.c         |  4 +-
>>  arch/arm64/kernel/pi/map_kernel.c      |  8 +--
>>  arch/arm64/kernel/vmcore_info.c        |  2 +-
>>  arch/arm64/mm/proc.S                   | 36 ++++++----
>>  tools/arch/arm64/include/asm/cputype.h |  2 +-
> 
> Please don't mix tools/ patches with arch patches. You probably want to keep
> the KVM one separate as well.

Sure, will split these changes in the following order.

- arm64 tool sysreg update for TCR_EL1
- Tools header update for TCR_NFD0/1
- Kernel update
- KVM specific update i.e header macro movement