Re: [PATCH v3 1/6] arm64: Detect the ARMv8.4 TTL feature

2020-05-26 Thread Marc Zyngier
On 2020-05-26 07:40, Zhenyu Ye wrote: Hi Anshuman, On 2020/5/26 10:39, Anshuman Khandual wrote: This patch (https://patchwork.kernel.org/patch/11557359/) is adding some more ID_AA64MMFR2 features including the TTL. I am going to respin parts of the V4 series patches along with the above mentio

Re: [PATCH v3 1/6] arm64: Detect the ARMv8.4 TTL feature

2020-05-25 Thread Zhenyu Ye
Hi Anshuman, On 2020/5/26 10:39, Anshuman Khandual wrote: > This patch (https://patchwork.kernel.org/patch/11557359/) is adding some > more ID_AA64MMFR2 features including the TTL. I am going to respin parts > of the V4 series patches along with the above mentioned patch. So please > rebase this s

Re: [PATCH v3 1/6] arm64: Detect the ARMv8.4 TTL feature

2020-05-25 Thread Anshuman Khandual
Hello Zhenyu, On 05/25/2020 06:22 PM, Zhenyu Ye wrote: > diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h > index c4ac0ac25a00..477d84ba1056 100644 > --- a/arch/arm64/include/asm/sysreg.h > +++ b/arch/arm64/include/asm/sysreg.h > @@ -725,6 +725,7 @@ > > /* id_aa64m

[PATCH v3 1/6] arm64: Detect the ARMv8.4 TTL feature

2020-05-25 Thread Zhenyu Ye
From: Marc Zyngier In order to reduce the cost of TLB invalidation, the ARMv8.4 TTL feature allows TLBs to be issued with a level allowing for quicker invalidation. Let's detect the feature for now. Further patches will implement its actual usage. Signed-off-by: Marc Zyngier Signed-off-by: Zhe