linux-kernel - Re: [PATCH] tile: support KVM for tilegx

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <52091682.8020004@siemens.com>
Date:	Mon, 12 Aug 2013 19:08:18 +0200
From:	Jan Kiszka <jan.kiszka@...mens.com>
To:	Chris Metcalf <cmetcalf@...era.com>
CC:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	Gleb Natapov <gleb@...hat.com>,
	Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: [PATCH] tile: support KVM for tilegx

On 2013-08-12 17:24, Chris Metcalf wrote:
> This change provides the initial framework support for KVM on tilegx.
> Basic virtual disk and networking is supported.
> 
> Signed-off-by: Chris Metcalf <cmetcalf@...era.com>
> ---

...

> diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
> index acccd08..d3879c5 100644
> --- a/include/uapi/linux/kvm.h
> +++ b/include/uapi/linux/kvm.h
> @@ -171,6 +171,7 @@ struct kvm_pit_config {
>  #define KVM_EXIT_WATCHDOG         21
>  #define KVM_EXIT_S390_TSCH        22
>  #define KVM_EXIT_EPR              23
> +#define KVM_EXIT_AGAIN            24
>  
>  /* For KVM_EXIT_INTERNAL_ERROR */
>  /* Emulate instruction failed. */
> @@ -1012,6 +1013,8 @@ struct kvm_s390_ucas_mapping {
>  #define KVM_KVMCLOCK_CTRL	  _IO(KVMIO,   0xad)
>  #define KVM_ARM_VCPU_INIT	  _IOW(KVMIO,  0xae, struct kvm_vcpu_init)
>  #define KVM_GET_REG_LIST	  _IOWR(KVMIO, 0xb0, struct kvm_reg_list)
> +/* Reset some SPR registers for tilegx */
> +#define KVM_TILE_RESET_SPR	  _IO(KVMIO,  0xa8)

The KVM way of doing this is typically GET/SET_SPR, i.e. a way to
read/write the registers from userspace. This will be required for
migration support anyway, I bet.

Jan

-- 
Siemens AG, Corporate Technology, CT RTC ITP SES-DE
Corporate Competence Center Embedded Linux
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/