From: marc.zyngier@arm•com (Marc Zyngier)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v9 09/12] ARM/ARM64: KVM: Emulate PSCI v0.2 MIGRATE_INFO_TYPE and related functions
Date: Tue, 15 Apr 2014 13:05:02 +0100 [thread overview]
Message-ID: <87ha5uztld.fsf@approximate.cambridge.arm.com> (raw)
In-Reply-To: <1397542455-354-10-git-send-email-anup.patel@linaro.org> (Anup Patel's message of "Tue, 15 Apr 2014 07:14:12 +0100")
On Tue, Apr 15 2014 at 7:14:12 am BST, Anup Patel <anup.patel@linaro•org> wrote:
> This patch adds emulation of PSCI v0.2 MIGRATE, MIGRATE_INFO_TYPE, and
> MIGRATE_INFO_UP_CPU function calls for KVM ARM/ARM64.
>
> KVM ARM/ARM64 being a hypervisor (and not a Trusted OS), we cannot provide
> this functions hence we emulate these functions in following way:
> 1. MIGRATE - Returns "Not Supported"
> 2. MIGRATE_INFO_TYPE - Return 2 i.e. Trusted OS is not present
> 3. MIGRATE_INFO_UP_CPU - Returns "Not Supported"
>
> Signed-off-by: Anup Patel <anup.patel@linaro•org>
> Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro•org>
> Reviewed-by: Christoffer Dall <christoffer.dall@linaro•org>
Acked-by: Marc Zyngier <marc.zyngier@arm•com>
> ---
> arch/arm/kvm/psci.c | 21 ++++++++++++++++-----
> 1 file changed, 16 insertions(+), 5 deletions(-)
>
> diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c
> index f6f9290..1af0016 100644
> --- a/arch/arm/kvm/psci.c
> +++ b/arch/arm/kvm/psci.c
> @@ -182,6 +182,22 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
> case PSCI_0_2_FN64_AFFINITY_INFO:
> val = kvm_psci_vcpu_affinity_info(vcpu);
> break;
> + case PSCI_0_2_FN_MIGRATE:
> + case PSCI_0_2_FN64_MIGRATE:
> + val = PSCI_RET_NOT_SUPPORTED;
> + break;
> + case PSCI_0_2_FN_MIGRATE_INFO_TYPE:
> + /*
> + * Trusted OS is MP hence does not require migration
> + * or
> + * Trusted OS is not present
> + */
> + val = PSCI_0_2_TOS_MP;
> + break;
> + case PSCI_0_2_FN_MIGRATE_INFO_UP_CPU:
> + case PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU:
> + val = PSCI_RET_NOT_SUPPORTED;
> + break;
> case PSCI_0_2_FN_SYSTEM_OFF:
> kvm_psci_system_off(vcpu);
> val = PSCI_RET_SUCCESS;
> @@ -193,12 +209,7 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
> ret = 0;
> break;
> case PSCI_0_2_FN_CPU_SUSPEND:
> - case PSCI_0_2_FN_MIGRATE:
> - case PSCI_0_2_FN_MIGRATE_INFO_TYPE:
> - case PSCI_0_2_FN_MIGRATE_INFO_UP_CPU:
> case PSCI_0_2_FN64_CPU_SUSPEND:
> - case PSCI_0_2_FN64_MIGRATE:
> - case PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU:
> val = PSCI_RET_NOT_SUPPORTED;
> break;
> default:
--
Jazz is not dead. It just smells funny.
next prev parent reply other threads:[~2014-04-15 12:05 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-15 6:14 [PATCH v9 00/12] In-kernel PSCI v0.2 emulation for KVM ARM/ARM64 Anup Patel
2014-04-15 6:14 ` [PATCH v9 01/12] KVM: Add capability to advertise PSCI v0.2 support Anup Patel
2014-04-15 9:49 ` Marc Zyngier
2014-04-15 6:14 ` [PATCH v9 02/12] ARM/ARM64: KVM: Add common header for PSCI related defines Anup Patel
2014-04-15 10:06 ` Marc Zyngier
2014-04-15 11:10 ` Anup Patel
2014-04-15 12:18 ` Marc Zyngier
2014-04-15 6:14 ` [PATCH v9 03/12] ARM/ARM64: KVM: Add base for PSCI v0.2 emulation Anup Patel
2014-04-15 10:19 ` Marc Zyngier
2014-04-15 6:14 ` [PATCH v9 04/12] KVM: Documentation: Add info regarding KVM_ARM_VCPU_PSCI_0_2 feature Anup Patel
2014-04-15 10:20 ` Marc Zyngier
2014-04-15 6:14 ` [PATCH v9 05/12] ARM/ARM64: KVM: Make kvm_psci_call() return convention more flexible Anup Patel
2014-04-15 10:21 ` Marc Zyngier
2014-04-15 11:13 ` Anup Patel
2014-04-15 12:23 ` Marc Zyngier
2014-04-15 13:07 ` Peter Maydell
2014-04-15 6:14 ` [PATCH v9 06/12] KVM: Add KVM_EXIT_SYSTEM_EVENT to user space API header Anup Patel
2014-04-15 10:25 ` Marc Zyngier
2014-04-15 6:14 ` [PATCH v9 07/12] ARM/ARM64: KVM: Emulate PSCI v0.2 SYSTEM_OFF and SYSTEM_RESET Anup Patel
2014-04-15 10:34 ` Marc Zyngier
2014-04-15 11:26 ` Anup Patel
2014-04-15 12:28 ` Marc Zyngier
2014-04-15 6:14 ` [PATCH v9 08/12] ARM/ARM64: KVM: Emulate PSCI v0.2 AFFINITY_INFO Anup Patel
2014-04-15 10:55 ` Marc Zyngier
2014-04-15 11:15 ` Anup Patel
2014-04-15 6:14 ` [PATCH v9 09/12] ARM/ARM64: KVM: Emulate PSCI v0.2 MIGRATE_INFO_TYPE and related functions Anup Patel
2014-04-15 12:05 ` Marc Zyngier [this message]
2014-04-15 6:14 ` [PATCH v9 10/12] ARM/ARM64: KVM: Fix CPU_ON emulation for PSCI v0.2 Anup Patel
2014-04-15 12:10 ` Marc Zyngier
2014-04-15 6:14 ` [PATCH v9 11/12] ARM/ARM64: KVM: Emulate PSCI v0.2 CPU_SUSPEND Anup Patel
2014-04-15 12:14 ` Marc Zyngier
2014-04-15 6:14 ` [PATCH v9 12/12] ARM/ARM64: KVM: Advertise KVM_CAP_ARM_PSCI_0_2 to user space Anup Patel
2014-04-15 12:16 ` Marc Zyngier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87ha5uztld.fsf@approximate.cambridge.arm.com \
--to=marc.zyngier@arm$(echo .)com \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox