linux-kernel - Re: [PATCH v4 02/12] KVM: define common KVM_GUESTDBG_USE_SW/HW

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Date:	Fri, 15 May 2015 17:58:38 +0200
From:	Christian Borntraeger <borntraeger@...ibm.com>
To:	Alex Bennée <alex.bennee@...aro.org>,
	kvm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	kvmarm@...ts.cs.columbia.edu, christoffer.dall@...aro.org,
	marc.zyngier@....com, peter.maydell@...aro.org, agraf@...e.de,
	drjones@...hat.com, pbonzini@...hat.com, zhichao.huang@...aro.org
CC:	jan.kiszka@...mens.com, dahi@...ux.vnet.ibm.com,
	r65777@...escale.com, bp@...e.de,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	linux390@...ibm.com, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	Gleb Natapov <gleb@...nel.org>,
	Bharat Bhushan <Bharat.Bhushan@...escale.com>,
	Alexey Kardashevskiy <aik@...abs.ru>,
	Mihai Caraman <mihai.caraman@...escale.com>,
	Cornelia Huck <cornelia.huck@...ibm.com>,
	Michael Mueller <mimu@...ux.vnet.ibm.com>,
	Eric Farman <farman@...ux.vnet.ibm.com>,
	Dominik Dingel <dingel@...ux.vnet.ibm.com>,
	Tony Krowiak <akrowiak@...ux.vnet.ibm.com>,
	"Jason J. Herne" <jjherne@...ux.vnet.ibm.com>,
	Nadav Amit <namit@...technion.ac.il>,
	linuxppc-dev@...ts.ozlabs.org,
	open list <linux-kernel@...r.kernel.org>,
	linux-s390@...r.kernel.org, linux-api@...r.kernel.org
Subject: Re: [PATCH v4 02/12] KVM: define common KVM_GUESTDBG_USE_SW/HW_BP
 bits

Am 15.05.2015 um 16:27 schrieb Alex Bennée:
> index ef1a5fc..aca4f86 100644
> --- a/arch/s390/include/uapi/asm/kvm.h
> +++ b/arch/s390/include/uapi/asm/kvm.h
> @@ -114,8 +114,6 @@ struct kvm_fpu {
>  	__u64 fprs[16];
>  };
> 
> -#define KVM_GUESTDBG_USE_HW_BP		0x00010000
> -


> diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
> index 70ac641..7c5dd11 100644
> --- a/include/uapi/linux/kvm.h
> +++ b/include/uapi/linux/kvm.h
[...]
> +#define KVM_GUESTDBG_USE_SW_BP		(1 << 16)
> +#define KVM_GUESTDBG_USE_HW_BP		(1 << 17)

This is a abi break for s390, no?

David do you remember why we did not use SW_BP?

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