linux-kernel - Re: [PATCH V2 0/7] arm64/hw_breakpoint: Enable FEAT

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Message-ID: <86ad5edc-ad57-43c3-86d2-0bd854a479c5@arm.com>
Date: Wed, 11 Dec 2024 14:04:12 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: Mark Rutland <mark.rutland@....com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 Jonathan Corbet <corbet@....net>, Marc Zyngier <maz@...nel.org>,
 Oliver Upton <oliver.upton@...ux.dev>, James Morse <james.morse@....com>,
 Suzuki K Poulose <suzuki.poulose@....com>,
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>,
 Mark Brown <broonie@...nel.org>, kvmarm@...ts.linux.dev
Subject: Re: [PATCH V2 0/7] arm64/hw_breakpoint: Enable FEAT_Debugv8p9



On 12/10/24 22:29, Mark Rutland wrote:
> On Mon, Oct 28, 2024 at 11:04:19AM +0530, Anshuman Khandual wrote:
>> This series enables FEAT_Debugv8p9 thus extending breakpoint and watchpoint
>> support upto 64. This series is based on v6.12-rc5 although this depends on
>> FEAT_FGT2 FGU series posted earlier, for MDSELR_EL1 handling in various KVM
>> guest configurations.
>>
>> https://lore.kernel.org/all/20241001024356.1096072-1-anshuman.khandual@arm.com/
> To avoid further confusion: since we discussed things further on the v1
> thread after this v2 thread was posted, I'm waiting for a v3 to be
> posted which addresses the comments there (e.g. ID reg field handling,
> mutual exclusion for breakpoint manipulation).

Agreed, although I am still working on the mutual exclusion for breakpoint
manipulation problem. Besides just carved out - MDCR_EL3.[TDS|TPM] related
EL3 boot requirement's document update in a separate series as discussed.

https://lore.kernel.org/all/20241211065425.1106683-1-anshuman.khandual@arm.com/