Re: [PATCH] KVM/arm: kernel low level debug support for ARM32 virtual platforms

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Subject: Re: [PATCH] KVM/arm: kernel low level debug support for ARM32 virtual platforms
From: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
Date: Wed, 4 Nov 2015 20:13:39 -0500
Cc: Christoffer Dall <christoffer.dall@xxxxxxxxxx>, Rob Herring <robherring2@xxxxxxxxx>, Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx>, "kvm@xxxxxxxxxxxxxxx" <kvm@xxxxxxxxxxxxxxx>, Marc Zyngier <marc.zyngier@xxxxxxx>, Andre Przywara <andre.przywara@xxxxxxx>, Will Deacon <will.deacon@xxxxxxx>, Grant Likely <grant.likely@xxxxxxxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, "kvmarm@xxxxxxxxxxxxxxxxxxxxx" <kvmarm@xxxxxxxxxxxxxxxxxxxxx>, "linux-arm-kernel@xxxxxxxxxxxxxxxxxxx" <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>
In-reply-to: <563A94A2.3010307@samsung.com>
References: <1446508313-24404-1-git-send-email-m.smarduch@samsung.com> <5638E1CD.8090006@codeaurora.org> <5638F294.4060409@samsung.com> <20151103175522.GA24856@arm.com> <56390838.3000204@samsung.com> <CAL_JsqJJHGwcdTDMh3WujJW0rDPxocVLEUpw95aVFC4FDEdDgA@mail.gmail.com> <20151104133147.GB5819@cbox> <563A531C.8090003@codeaurora.org> <CAKv+Gu8GJgzv82fVfCU7VQB2_ckRkzUYcQOx51rT2WgnmO_fsw@mail.gmail.com> <563A94A2.3010307@samsung.com>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0

On 11/04/2015 06:28 PM, Mario Smarduch wrote:
> I spent time debugging 'earlycon' for pl011, ironically using DEBUG_LL, from the
> looks of it no mmio uart should work for armv7. It appears earlycon_map()
> requires a fixed mapping similar to arm64.

commit a5f4c561b3b1 ("ARM: 8415/1: early fixmap support for earlycon")
added ARM fixmap support for earlycon since 4.3-rc1. That was in it's 5th
revision; various versions have been on lkml since Dec 2014 or so.

Regards,
Peter Hurley
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References:
- [PATCH] KVM/arm: kernel low level debug support for ARM32 virtual platforms
  - From: Mario Smarduch
- Re: [PATCH] KVM/arm: kernel low level debug support for ARM32 virtual platforms
  - From: Christopher Covington
- Re: [PATCH] KVM/arm: kernel low level debug support for ARM32 virtual platforms
  - From: Mario Smarduch
- Re: [PATCH] KVM/arm: kernel low level debug support for ARM32 virtual platforms
  - From: Will Deacon
- Re: [PATCH] KVM/arm: kernel low level debug support for ARM32 virtual platforms
  - From: Mario Smarduch
- Re: [PATCH] KVM/arm: kernel low level debug support for ARM32 virtual platforms
  - From: Rob Herring
- Re: [PATCH] KVM/arm: kernel low level debug support for ARM32 virtual platforms
  - From: Christoffer Dall
- Re: [PATCH] KVM/arm: kernel low level debug support for ARM32 virtual platforms
  - From: Christopher Covington
- Re: [PATCH] KVM/arm: kernel low level debug support for ARM32 virtual platforms
  - From: Ard Biesheuvel
- Re: [PATCH] KVM/arm: kernel low level debug support for ARM32 virtual platforms
  - From: Mario Smarduch

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