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From: Will Deacon <will@kernel.org>
To: Hector Martin <marcan@marcan.st>
Cc: linux-arm-kernel@lists.infradead.org,
	Marc Zyngier <maz@kernel.org>, Rob Herring <robh@kernel.org>,
	Arnd Bergmann <arnd@kernel.org>, Olof Johansson <olof@lixom.net>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Mark Kettenis <mark.kettenis@xs4all.nl>,
	Tony Lindgren <tony@atomide.com>,
	Mohamed Mediouni <mohamed.mediouni@caramail.com>,
	Stan Skowronek <stan@corellium.com>,
	Alexander Graf <graf@amazon.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Andy Shevchenko <andy.shevchenko@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Christoph Hellwig <hch@infradead.org>,
	"David S. Miller" <davem@davemloft.net>,
	devicetree@vger.kernel.org, linux-serial@vger.kernel.org,
	linux-doc@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
	linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFT PATCH v3 01/27] arm64: Cope with CPUs stuck in VHE mode
Date: Wed, 24 Mar 2021 18:05:46 +0000	[thread overview]
Message-ID: <20210324180546.GA13181@willie-the-truck> (raw)
In-Reply-To: <20210304213902.83903-2-marcan@marcan.st>

On Fri, Mar 05, 2021 at 06:38:36AM +0900, Hector Martin wrote:
> From: Marc Zyngier <maz@kernel.org>
> 
> It seems that the CPU known as Apple M1 has the terrible habit
> of being stuck with HCR_EL2.E2H==1, in violation of the architecture.
> 
> Try and work around this deplorable state of affairs by detecting
> the stuck bit early and short-circuit the nVHE dance. It is still
> unknown whether there are many more such nuggets to be found...
> 
> Reported-by: Hector Martin <marcan@marcan.st>
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> ---
>  arch/arm64/kernel/head.S     | 33 ++++++++++++++++++++++++++++++---
>  arch/arm64/kernel/hyp-stub.S | 28 ++++++++++++++++++++++++----
>  2 files changed, 54 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
> index 66b0e0b66e31..673002b11865 100644
> --- a/arch/arm64/kernel/head.S
> +++ b/arch/arm64/kernel/head.S
> @@ -477,14 +477,13 @@ EXPORT_SYMBOL(kimage_vaddr)
>   * booted in EL1 or EL2 respectively.
>   */
>  SYM_FUNC_START(init_kernel_el)
> -	mov_q	x0, INIT_SCTLR_EL1_MMU_OFF
> -	msr	sctlr_el1, x0
> -
>  	mrs	x0, CurrentEL
>  	cmp	x0, #CurrentEL_EL2
>  	b.eq	init_el2
>  
>  SYM_INNER_LABEL(init_el1, SYM_L_LOCAL)
> +	mov_q	x0, INIT_SCTLR_EL1_MMU_OFF
> +	msr	sctlr_el1, x0
>  	isb
>  	mov_q	x0, INIT_PSTATE_EL1
>  	msr	spsr_el1, x0
> @@ -504,6 +503,34 @@ SYM_INNER_LABEL(init_el2, SYM_L_LOCAL)
>  	msr	vbar_el2, x0
>  	isb
>  
> +	/*
> +	 * Fruity CPUs seem to have HCR_EL2.E2H set to RES1,
> +	 * making it impossible to start in nVHE mode. Is that
> +	 * compliant with the architecture? Absolutely not!
> +	 */
> +	mrs	x0, hcr_el2
> +	and	x0, x0, #HCR_E2H
> +	cbz	x0, 1f
> +
> +	/* Switching to VHE requires a sane SCTLR_EL1 as a start */
> +	mov_q	x0, INIT_SCTLR_EL1_MMU_OFF
> +	msr_s	SYS_SCTLR_EL12, x0
> +
> +	/*
> +	 * Force an eret into a helper "function", and let it return
> +	 * to our original caller... This makes sure that we have
> +	 * initialised the basic PSTATE state.
> +	 */
> +	mov	x0, #INIT_PSTATE_EL2
> +	msr	spsr_el1, x0
> +	adr_l	x0, stick_to_vhe
> +	msr	elr_el1, x0
> +	eret
> +
> +1:
> +	mov_q	x0, INIT_SCTLR_EL1_MMU_OFF
> +	msr	sctlr_el1, x0
> +
>  	msr	elr_el2, lr
>  	mov	w0, #BOOT_CPU_MODE_EL2
>  	eret
> diff --git a/arch/arm64/kernel/hyp-stub.S b/arch/arm64/kernel/hyp-stub.S
> index 5eccbd62fec8..c7601030ee82 100644
> --- a/arch/arm64/kernel/hyp-stub.S
> +++ b/arch/arm64/kernel/hyp-stub.S
> @@ -27,12 +27,12 @@ SYM_CODE_START(__hyp_stub_vectors)
>  	ventry	el2_fiq_invalid			// FIQ EL2t
>  	ventry	el2_error_invalid		// Error EL2t
>  
> -	ventry	el2_sync_invalid		// Synchronous EL2h
> +	ventry	elx_sync			// Synchronous EL2h
>  	ventry	el2_irq_invalid			// IRQ EL2h
>  	ventry	el2_fiq_invalid			// FIQ EL2h
>  	ventry	el2_error_invalid		// Error EL2h
>  
> -	ventry	el1_sync			// Synchronous 64-bit EL1
> +	ventry	elx_sync			// Synchronous 64-bit EL1
>  	ventry	el1_irq_invalid			// IRQ 64-bit EL1
>  	ventry	el1_fiq_invalid			// FIQ 64-bit EL1
>  	ventry	el1_error_invalid		// Error 64-bit EL1
> @@ -45,7 +45,7 @@ SYM_CODE_END(__hyp_stub_vectors)
>  
>  	.align 11
>  
> -SYM_CODE_START_LOCAL(el1_sync)
> +SYM_CODE_START_LOCAL(elx_sync)
>  	cmp	x0, #HVC_SET_VECTORS
>  	b.ne	1f
>  	msr	vbar_el2, x1
> @@ -71,7 +71,7 @@ SYM_CODE_START_LOCAL(el1_sync)
>  
>  9:	mov	x0, xzr
>  	eret
> -SYM_CODE_END(el1_sync)
> +SYM_CODE_END(elx_sync)
>  
>  // nVHE? No way! Give me the real thing!
>  SYM_CODE_START_LOCAL(mutate_to_vhe)
> @@ -243,3 +243,23 @@ SYM_FUNC_START(switch_to_vhe)
>  #endif
>  	ret
>  SYM_FUNC_END(switch_to_vhe)
> +
> +SYM_FUNC_START(stick_to_vhe)
> +	/*
> +	 * Make sure the switch to VHE cannot fail, by overriding the
> +	 * override. This is hilarious.
> +	 */
> +	adr_l	x1, id_aa64mmfr1_override
> +	add	x1, x1, #FTR_OVR_MASK_OFFSET
> +	dc 	civac, x1
> +	dsb	sy
> +	isb

Why do we need an ISB here?

> +	ldr	x0, [x1]
> +	bic	x0, x0, #(0xf << ID_AA64MMFR1_VHE_SHIFT)
> +	str	x0, [x1]

I find it a bit bizarre doing this here, as for the primary CPU we're still
a way away from parsing the early paramaters and for secondary CPUs this
doesn't need to be done for each one. Furthermore, this same code is run
on the resume path, which can probably then race with itself.

Is it possible to do it later on the boot CPU only, e.g. in
init_feature_override()? We should probably also log a warning that we're
ignoring the option because nVHE is not available.

Will

WARNING: multiple messages have this Message-ID
From: Will Deacon <will@kernel.org>
To: Hector Martin <marcan@marcan.st>
Cc: linux-arm-kernel@lists.infradead.org,
	Marc Zyngier <maz@kernel.org>, Rob Herring <robh@kernel.org>,
	Arnd Bergmann <arnd@kernel.org>, Olof Johansson <olof@lixom.net>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Mark Kettenis <mark.kettenis@xs4all.nl>,
	Tony Lindgren <tony@atomide.com>,
	Mohamed Mediouni <mohamed.mediouni@caramail.com>,
	Stan Skowronek <stan@corellium.com>,
	Alexander Graf <graf@amazon.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Andy Shevchenko <andy.shevchenko@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Christoph Hellwig <hch@infradead.org>,
	"David S. Miller" <davem@davemloft.net>,
	devicetree@vger.kernel.org, linux-serial@vger.kernel.org,
	linux-doc@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
	linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFT PATCH v3 01/27] arm64: Cope with CPUs stuck in VHE mode
Date: Wed, 24 Mar 2021 18:05:46 +0000	[thread overview]
Message-ID: <20210324180546.GA13181@willie-the-truck> (raw)
In-Reply-To: <20210304213902.83903-2-marcan@marcan.st>

On Fri, Mar 05, 2021 at 06:38:36AM +0900, Hector Martin wrote:
> From: Marc Zyngier <maz@kernel.org>
> 
> It seems that the CPU known as Apple M1 has the terrible habit
> of being stuck with HCR_EL2.E2H==1, in violation of the architecture.
> 
> Try and work around this deplorable state of affairs by detecting
> the stuck bit early and short-circuit the nVHE dance. It is still
> unknown whether there are many more such nuggets to be found...
> 
> Reported-by: Hector Martin <marcan@marcan.st>
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> ---
>  arch/arm64/kernel/head.S     | 33 ++++++++++++++++++++++++++++++---
>  arch/arm64/kernel/hyp-stub.S | 28 ++++++++++++++++++++++++----
>  2 files changed, 54 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
> index 66b0e0b66e31..673002b11865 100644
> --- a/arch/arm64/kernel/head.S
> +++ b/arch/arm64/kernel/head.S
> @@ -477,14 +477,13 @@ EXPORT_SYMBOL(kimage_vaddr)
>   * booted in EL1 or EL2 respectively.
>   */
>  SYM_FUNC_START(init_kernel_el)
> -	mov_q	x0, INIT_SCTLR_EL1_MMU_OFF
> -	msr	sctlr_el1, x0
> -
>  	mrs	x0, CurrentEL
>  	cmp	x0, #CurrentEL_EL2
>  	b.eq	init_el2
>  
>  SYM_INNER_LABEL(init_el1, SYM_L_LOCAL)
> +	mov_q	x0, INIT_SCTLR_EL1_MMU_OFF
> +	msr	sctlr_el1, x0
>  	isb
>  	mov_q	x0, INIT_PSTATE_EL1
>  	msr	spsr_el1, x0
> @@ -504,6 +503,34 @@ SYM_INNER_LABEL(init_el2, SYM_L_LOCAL)
>  	msr	vbar_el2, x0
>  	isb
>  
> +	/*
> +	 * Fruity CPUs seem to have HCR_EL2.E2H set to RES1,
> +	 * making it impossible to start in nVHE mode. Is that
> +	 * compliant with the architecture? Absolutely not!
> +	 */
> +	mrs	x0, hcr_el2
> +	and	x0, x0, #HCR_E2H
> +	cbz	x0, 1f
> +
> +	/* Switching to VHE requires a sane SCTLR_EL1 as a start */
> +	mov_q	x0, INIT_SCTLR_EL1_MMU_OFF
> +	msr_s	SYS_SCTLR_EL12, x0
> +
> +	/*
> +	 * Force an eret into a helper "function", and let it return
> +	 * to our original caller... This makes sure that we have
> +	 * initialised the basic PSTATE state.
> +	 */
> +	mov	x0, #INIT_PSTATE_EL2
> +	msr	spsr_el1, x0
> +	adr_l	x0, stick_to_vhe
> +	msr	elr_el1, x0
> +	eret
> +
> +1:
> +	mov_q	x0, INIT_SCTLR_EL1_MMU_OFF
> +	msr	sctlr_el1, x0
> +
>  	msr	elr_el2, lr
>  	mov	w0, #BOOT_CPU_MODE_EL2
>  	eret
> diff --git a/arch/arm64/kernel/hyp-stub.S b/arch/arm64/kernel/hyp-stub.S
> index 5eccbd62fec8..c7601030ee82 100644
> --- a/arch/arm64/kernel/hyp-stub.S
> +++ b/arch/arm64/kernel/hyp-stub.S
> @@ -27,12 +27,12 @@ SYM_CODE_START(__hyp_stub_vectors)
>  	ventry	el2_fiq_invalid			// FIQ EL2t
>  	ventry	el2_error_invalid		// Error EL2t
>  
> -	ventry	el2_sync_invalid		// Synchronous EL2h
> +	ventry	elx_sync			// Synchronous EL2h
>  	ventry	el2_irq_invalid			// IRQ EL2h
>  	ventry	el2_fiq_invalid			// FIQ EL2h
>  	ventry	el2_error_invalid		// Error EL2h
>  
> -	ventry	el1_sync			// Synchronous 64-bit EL1
> +	ventry	elx_sync			// Synchronous 64-bit EL1
>  	ventry	el1_irq_invalid			// IRQ 64-bit EL1
>  	ventry	el1_fiq_invalid			// FIQ 64-bit EL1
>  	ventry	el1_error_invalid		// Error 64-bit EL1
> @@ -45,7 +45,7 @@ SYM_CODE_END(__hyp_stub_vectors)
>  
>  	.align 11
>  
> -SYM_CODE_START_LOCAL(el1_sync)
> +SYM_CODE_START_LOCAL(elx_sync)
>  	cmp	x0, #HVC_SET_VECTORS
>  	b.ne	1f
>  	msr	vbar_el2, x1
> @@ -71,7 +71,7 @@ SYM_CODE_START_LOCAL(el1_sync)
>  
>  9:	mov	x0, xzr
>  	eret
> -SYM_CODE_END(el1_sync)
> +SYM_CODE_END(elx_sync)
>  
>  // nVHE? No way! Give me the real thing!
>  SYM_CODE_START_LOCAL(mutate_to_vhe)
> @@ -243,3 +243,23 @@ SYM_FUNC_START(switch_to_vhe)
>  #endif
>  	ret
>  SYM_FUNC_END(switch_to_vhe)
> +
> +SYM_FUNC_START(stick_to_vhe)
> +	/*
> +	 * Make sure the switch to VHE cannot fail, by overriding the
> +	 * override. This is hilarious.
> +	 */
> +	adr_l	x1, id_aa64mmfr1_override
> +	add	x1, x1, #FTR_OVR_MASK_OFFSET
> +	dc 	civac, x1
> +	dsb	sy
> +	isb

Why do we need an ISB here?

> +	ldr	x0, [x1]
> +	bic	x0, x0, #(0xf << ID_AA64MMFR1_VHE_SHIFT)
> +	str	x0, [x1]

I find it a bit bizarre doing this here, as for the primary CPU we're still
a way away from parsing the early paramaters and for secondary CPUs this
doesn't need to be done for each one. Furthermore, this same code is run
on the resume path, which can probably then race with itself.

Is it possible to do it later on the boot CPU only, e.g. in
init_feature_override()? We should probably also log a warning that we're
ignoring the option because nVHE is not available.

Will

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  reply	other threads:[~2021-03-24 18:06 UTC|newest]

Thread overview: 275+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-04 21:38 [RFT PATCH v3 00/27] Apple M1 SoC platform bring-up Hector Martin
2021-03-04 21:38 ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 01/27] arm64: Cope with CPUs stuck in VHE mode Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-24 18:05   ` Will Deacon [this message]
2021-03-24 18:05     ` Will Deacon
2021-03-24 20:00     ` Marc Zyngier
2021-03-24 20:00       ` Marc Zyngier
2021-03-26  7:54       ` Hector Martin
2021-03-26  7:54         ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 02/27] dt-bindings: vendor-prefixes: Add apple prefix Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-08 20:26   ` Rob Herring
2021-03-08 20:26     ` Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 03/27] dt-bindings: arm: apple: Add bindings for Apple ARM platforms Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:16   ` Linus Walleij
2021-03-05 10:16     ` Linus Walleij
2021-03-08 20:27   ` Rob Herring
2021-03-08 20:27     ` Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 04/27] dt-bindings: arm: cpus: Add apple,firestorm & icestorm compatibles Hector Martin
2021-03-04 21:38   ` [RFT PATCH v3 04/27] dt-bindings: arm: cpus: Add apple, firestorm " Hector Martin
2021-03-08 20:27   ` [RFT PATCH v3 04/27] dt-bindings: arm: cpus: Add apple,firestorm " Rob Herring
2021-03-08 20:27     ` [RFT PATCH v3 04/27] dt-bindings: arm: cpus: Add apple, firestorm " Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 05/27] arm64: cputype: Add CPU implementor & types for the Apple M1 cores Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-24 18:13   ` Will Deacon
2021-03-24 18:13     ` Will Deacon
2021-03-04 21:38 ` [RFT PATCH v3 06/27] dt-bindings: timer: arm,arch_timer: Add interrupt-names support Hector Martin
2021-03-04 21:38   ` [RFT PATCH v3 06/27] dt-bindings: timer: arm, arch_timer: " Hector Martin
2021-03-05 10:18   ` [RFT PATCH v3 06/27] dt-bindings: timer: arm,arch_timer: " Linus Walleij
2021-03-05 10:18     ` Linus Walleij
2021-03-08 11:12   ` Marc Zyngier
2021-03-08 11:12     ` [RFT PATCH v3 06/27] dt-bindings: timer: arm, arch_timer: " Marc Zyngier
2021-03-08 17:14   ` [RFT PATCH v3 06/27] dt-bindings: timer: arm,arch_timer: " Tony Lindgren
2021-03-08 17:14     ` Tony Lindgren
2021-03-08 20:38   ` Rob Herring
2021-03-08 20:38     ` Rob Herring
2021-03-08 22:42     ` Marc Zyngier
2021-03-08 22:42       ` [RFT PATCH v3 06/27] dt-bindings: timer: arm, arch_timer: " Marc Zyngier
2021-03-09 16:11       ` [RFT PATCH v3 06/27] dt-bindings: timer: arm,arch_timer: " Rob Herring
2021-03-09 16:11         ` Rob Herring
2021-03-09 20:28         ` Hector Martin
2021-03-09 20:28           ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 07/27] arm64: arch_timer: implement support for interrupt-names Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:19   ` Linus Walleij
2021-03-05 10:19     ` Linus Walleij
2021-03-08 11:13   ` Marc Zyngier
2021-03-08 11:13     ` Marc Zyngier
2021-03-04 21:38 ` [RFT PATCH v3 08/27] asm-generic/io.h: Add a non-posted variant of ioremap() Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 14:45   ` Andy Shevchenko
2021-03-05 14:45     ` Andy Shevchenko
2021-03-05 15:19     ` Hector Martin
2021-03-05 15:19       ` Hector Martin
2021-03-08 11:20   ` Marc Zyngier
2021-03-08 11:20     ` Marc Zyngier
2021-03-24 18:12   ` Will Deacon
2021-03-24 18:12     ` Will Deacon
2021-03-24 19:09     ` Arnd Bergmann
2021-03-24 19:09       ` Arnd Bergmann
2021-03-25 14:07       ` Hector Martin
2021-03-25 14:07         ` Hector Martin
2021-03-25 14:49         ` Will Deacon
2021-03-25 14:49           ` Will Deacon
2021-03-04 21:38 ` [RFT PATCH v3 09/27] docs: driver-api: device-io: Document I/O access functions Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:22   ` Linus Walleij
2021-03-05 10:22     ` Linus Walleij
2021-03-04 21:38 ` [RFT PATCH v3 10/27] docs: driver-api: device-io: Document ioremap() variants & access funcs Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:25   ` Linus Walleij
2021-03-05 10:25     ` Linus Walleij
2021-03-05 15:09     ` Andy Shevchenko
2021-03-05 15:09       ` Andy Shevchenko
2021-03-05 15:51       ` Arnd Bergmann
2021-03-05 15:51         ` Arnd Bergmann
2021-03-09 20:29         ` Hector Martin
2021-03-09 20:29           ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 11/27] arm64: Implement ioremap_np() to map MMIO as nGnRnE Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-08 11:22   ` Marc Zyngier
2021-03-08 11:22     ` Marc Zyngier
2021-03-24 18:18   ` Will Deacon
2021-03-24 18:18     ` Will Deacon
2021-03-04 21:38 ` [RFT PATCH v3 12/27] of/address: Add infrastructure to declare MMIO as non-posted Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:28   ` Linus Walleij
2021-03-05 10:28     ` Linus Walleij
2021-03-05 15:13   ` Andy Shevchenko
2021-03-05 15:13     ` Andy Shevchenko
2021-03-05 15:55     ` Hector Martin
2021-03-05 15:55       ` Hector Martin
2021-03-05 16:08       ` Andy Shevchenko
2021-03-05 16:08         ` Andy Shevchenko
2021-03-05 16:43         ` Arnd Bergmann
2021-03-05 16:43           ` Arnd Bergmann
2021-03-05 17:19           ` Hector Martin
2021-03-05 17:19             ` Hector Martin
2021-03-05 16:05     ` Rob Herring
2021-03-05 16:05       ` Rob Herring
2021-03-05 17:39   ` Rob Herring
2021-03-05 17:39     ` Rob Herring
2021-03-05 18:18     ` Hector Martin
2021-03-05 18:18       ` Hector Martin
2021-03-05 21:17       ` Arnd Bergmann
2021-03-05 21:17         ` Arnd Bergmann
2021-03-08 15:56         ` Rob Herring
2021-03-08 15:56           ` Rob Herring
2021-03-08 20:29           ` Arnd Bergmann
2021-03-08 20:29             ` Arnd Bergmann
2021-03-08 21:13             ` Rob Herring
2021-03-08 21:13               ` Rob Herring
2021-03-08 21:56               ` Arnd Bergmann
2021-03-08 21:56                 ` Arnd Bergmann
2021-03-09 15:48                 ` Rob Herring
2021-03-09 15:48                   ` Rob Herring
2021-03-09 20:23                   ` Hector Martin
2021-03-09 20:23                     ` Hector Martin
2021-03-09 22:06                     ` Rob Herring
2021-03-09 22:06                       ` Rob Herring
2021-03-10  8:26                       ` Hector Martin
2021-03-10  8:26                         ` Hector Martin
2021-03-10 17:01                         ` Rob Herring
2021-03-10 17:01                           ` Rob Herring
2021-03-11  9:12                           ` Arnd Bergmann
2021-03-11  9:12                             ` Arnd Bergmann
2021-03-11 12:11                             ` Hector Martin
2021-03-11 12:11                               ` Hector Martin
2021-03-11 13:35                               ` Arnd Bergmann
2021-03-11 13:35                                 ` Arnd Bergmann
2021-03-11 16:07                             ` Rob Herring
2021-03-11 16:07                               ` Rob Herring
2021-03-11 16:48                               ` Arnd Bergmann
2021-03-11 16:48                                 ` Arnd Bergmann
2021-03-11 18:10                                 ` Rob Herring
2021-03-11 18:10                                   ` Rob Herring
2021-03-12 10:20                                   ` Arnd Bergmann
2021-03-12 10:20                                     ` Arnd Bergmann
2021-03-09 11:14               ` Linus Walleij
2021-03-09 11:14                 ` Linus Walleij
2021-03-09 12:41                 ` Arnd Bergmann
2021-03-09 12:41                   ` Arnd Bergmann
2021-03-09 15:40                   ` Linus Walleij
2021-03-09 15:40                     ` Linus Walleij
2021-03-04 21:38 ` [RFT PATCH v3 13/27] arm64: Add Apple vendor-specific system registers Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-24 18:38   ` Will Deacon
2021-03-24 18:38     ` Will Deacon
2021-03-24 18:59     ` Mark Rutland
2021-03-24 18:59       ` Mark Rutland
2021-03-24 19:04       ` Will Deacon
2021-03-24 19:04         ` Will Deacon
2021-03-26  6:23         ` Hector Martin
2021-03-26  6:23           ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 14/27] arm64: move ICH_ sysreg bits from arm-gic-v3.h to sysreg.h Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-08 11:39   ` Marc Zyngier
2021-03-08 11:39     ` Marc Zyngier
2021-03-24 18:23   ` Will Deacon
2021-03-24 18:23     ` Will Deacon
2021-03-04 21:38 ` [RFT PATCH v3 15/27] dt-bindings: interrupt-controller: Add DT bindings for apple-aic Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-08 21:16   ` Rob Herring
2021-03-08 21:16     ` Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 16/27] irqchip/apple-aic: Add support for the Apple Interrupt Controller Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 15:05   ` Andy Shevchenko
2021-03-05 15:05     ` Andy Shevchenko
2021-03-08 11:50     ` Marc Zyngier
2021-03-08 11:50       ` Marc Zyngier
2021-03-08 12:02       ` Andy Shevchenko
2021-03-08 12:02         ` Andy Shevchenko
2021-03-26 13:40     ` Hector Martin
2021-03-26 13:40       ` Hector Martin
2021-03-08 13:31   ` Marc Zyngier
2021-03-08 13:31     ` Marc Zyngier
2021-03-26  7:57     ` Hector Martin
2021-03-26  7:57       ` Hector Martin
2021-03-24 19:57   ` Will Deacon
2021-03-24 19:57     ` Will Deacon
2021-03-26  8:58     ` Hector Martin
2021-03-26  8:58       ` Hector Martin
2021-03-29 12:04       ` Will Deacon
2021-03-29 12:04         ` Will Deacon
2021-04-01 13:16         ` Hector Martin
2021-04-01 13:16           ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 17/27] arm64: Kconfig: Introduce CONFIG_ARCH_APPLE Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-08 15:35   ` Marc Zyngier
2021-03-08 15:35     ` Marc Zyngier
2021-03-09 20:30     ` Hector Martin
2021-03-09 20:30       ` Hector Martin
2021-03-04 21:38 ` [RFT PATCH v3 18/27] tty: serial: samsung_tty: Separate S3C64XX ops structure Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:30   ` Krzysztof Kozlowski
2021-03-05 10:30     ` Krzysztof Kozlowski
2021-03-04 21:38 ` [RFT PATCH v3 19/27] tty: serial: samsung_tty: Add ucon_mask parameter Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:34   ` Krzysztof Kozlowski
2021-03-05 10:34     ` Krzysztof Kozlowski
2021-03-04 21:38 ` [RFT PATCH v3 20/27] tty: serial: samsung_tty: Add s3c24xx_port_type Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:49   ` Krzysztof Kozlowski
2021-03-05 10:49     ` Krzysztof Kozlowski
2021-03-04 21:38 ` [RFT PATCH v3 21/27] tty: serial: samsung_tty: IRQ rework Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:51   ` Krzysztof Kozlowski
2021-03-05 10:51     ` Krzysztof Kozlowski
2021-03-05 15:17   ` Andy Shevchenko
2021-03-05 15:17     ` Andy Shevchenko
2021-03-05 16:16     ` Hector Martin
2021-03-05 16:16       ` Hector Martin
2021-03-05 16:20       ` Andy Shevchenko
2021-03-05 16:20         ` Andy Shevchenko
2021-03-05 16:29         ` Hector Martin
2021-03-05 16:29           ` Hector Martin
2021-03-07 11:34           ` Krzysztof Kozlowski
2021-03-07 11:34             ` Krzysztof Kozlowski
2021-03-07 16:01             ` Arnd Bergmann
2021-03-07 16:01               ` Arnd Bergmann
2021-03-07 19:51               ` Krzysztof Kozlowski
2021-03-07 19:51                 ` Krzysztof Kozlowski
2021-03-04 21:38 ` [RFT PATCH v3 22/27] tty: serial: samsung_tty: Use devm_ioremap_resource Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:54   ` Krzysztof Kozlowski
2021-03-05 10:54     ` Krzysztof Kozlowski
2021-03-05 15:19     ` Andy Shevchenko
2021-03-05 15:19       ` Andy Shevchenko
2021-03-04 21:38 ` [RFT PATCH v3 23/27] dt-bindings: serial: samsung: Add apple,s5l-uart compatible Hector Martin
2021-03-04 21:38   ` [RFT PATCH v3 23/27] dt-bindings: serial: samsung: Add apple, s5l-uart compatible Hector Martin
2021-03-08 21:17   ` [RFT PATCH v3 23/27] dt-bindings: serial: samsung: Add apple,s5l-uart compatible Rob Herring
2021-03-08 21:17     ` Rob Herring
2021-03-04 21:38 ` [RFT PATCH v3 24/27] tty: serial: samsung_tty: Add support for Apple UARTs Hector Martin
2021-03-04 21:38   ` Hector Martin
2021-03-05 10:58   ` Krzysztof Kozlowski
2021-03-05 10:58     ` Krzysztof Kozlowski
2021-03-05 15:28   ` Andy Shevchenko
2021-03-05 15:28     ` Andy Shevchenko
2021-03-05 17:04     ` Hector Martin
2021-03-05 17:04       ` Hector Martin
2021-03-07 11:40       ` Krzysztof Kozlowski
2021-03-07 11:40         ` Krzysztof Kozlowski
2021-03-04 21:39 ` [RFT PATCH v3 25/27] tty: serial: samsung_tty: Add earlycon " Hector Martin
2021-03-04 21:39   ` Hector Martin
2021-03-05 10:55   ` Krzysztof Kozlowski
2021-03-05 10:55     ` Krzysztof Kozlowski
2021-03-10 23:11   ` Linus Walleij
2021-03-10 23:11     ` Linus Walleij
2021-03-04 21:39 ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple,simple-framebuffer Hector Martin
2021-03-04 21:39   ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple, simple-framebuffer Hector Martin
2021-03-08 21:18   ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple,simple-framebuffer Rob Herring
2021-03-08 21:18     ` Rob Herring
2021-03-09 16:37   ` Linus Walleij
2021-03-09 16:37     ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple, simple-framebuffer Linus Walleij
2021-03-09 20:35     ` [RFT PATCH v3 26/27] dt-bindings: display: Add apple,simple-framebuffer Hector Martin
2021-03-09 20:35       ` Hector Martin
2021-03-04 21:39 ` [RFT PATCH v3 27/27] arm64: apple: Add initial Apple Mac mini (M1, 2020) devicetree Hector Martin
2021-03-04 21:39   ` Hector Martin
2021-03-05 11:03   ` Krzysztof Kozlowski
2021-03-05 11:03     ` Krzysztof Kozlowski
2021-03-05 11:14     ` Hector Martin
2021-03-05 11:14       ` Hector Martin
2021-03-05 11:45       ` Krzysztof Kozlowski
2021-03-05 11:45         ` Krzysztof Kozlowski
2021-03-05 15:59       ` Mark Kettenis
2021-03-05 15:59         ` Mark Kettenis
2021-03-05 16:50         ` Hector Martin
2021-03-05 16:50           ` Hector Martin
2021-03-13 20:22   ` Konrad Dybcio
2021-04-05  5:50     ` Hector Martin
2021-04-06  7:14       ` Arnd Bergmann
2021-03-05 10:11 ` [RFT PATCH v3 00/27] Apple M1 SoC platform bring-up Hector Martin
2021-03-05 10:11   ` Hector Martin

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