From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: Michael Neuling <mikey@neuling.org>,
Anton Blanchard <anton@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Paul Mackerras <paulus@samba.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: PR KVM and TM issues
Date: Tue, 5 Apr 2016 17:29:26 +1000 [thread overview]
Message-ID: <57036956.60606@ozlabs.ru> (raw)
In-Reply-To: <1459768184.3260.14.camel@neuling.org>
On 04/04/2016 09:09 PM, Michael Neuling wrote:
> On Mon, 2016-04-04 at 17:00 +1000, Alexey Kardashevskiy wrote:
>> On 04/04/2016 04:44 PM, Anton Blanchard wrote:
>>> Hi,
>>>
>>> I can't get an Ubuntu Wily guest to boot on an Ubuntu Wily host in PR KVM
>>> mode. The kernel in both cases is 4.2. To reproduce:
>>>
>>> wget -N https://cloud-images.ubuntu.com/wily/current/wily-server-cloudimg-ppc64el-disk1.img
>>>
>>> qemu-system-ppc64 -cpu POWER8 -enable-kvm -machine pseries,kvm-type=PR -m 4G -nographic -vga none -drive file=wily-server-cloudimg-ppc64el-disk1.img,if=virtio
>>>
>>> Should TM work inside a PR KVM guest?
>>
>> If I read the kernel code correctly (kvmppc_set_one_reg_hv vs.
>> kvmppc_set_one_reg_pr), no, it should not be expected to work.
>
> What's missing?
I do not know much about TM... SET_ONE_REG interface does not support TM
registers for PR KVM and stuff which e4e38121507a2 "KVM: PPC: Book3S HV:
Add transactional memory support" adds (save/restore TM state on guest
entry/exit) is absent in PR KVM's book3s_rmhandlers.S.
--
Alexey
prev parent reply other threads:[~2016-04-05 7:29 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-04 6:44 PR KVM and TM issues Anton Blanchard
2016-04-04 7:00 ` Alexey Kardashevskiy
2016-04-04 10:43 ` Anton Blanchard
2016-04-04 11:09 ` [PATCH] spapr: Don't set the TM ibm,pa-features bit in PR KVM mode Anton Blanchard
2016-04-04 11:13 ` [PATCH] spapr: Don't set the TM ibm, pa-features " Alexander Graf
2016-04-30 0:48 ` [PATCH v2] spapr: Don't set the TM ibm,pa-features " Anton Blanchard
2016-05-02 9:36 ` [Qemu-devel] [PATCH v2] spapr: Don't set the TM ibm, pa-features " haris iqbal
2016-05-27 4:52 ` David Gibson
2016-06-07 12:28 ` [PATCH 1/2] Add PowerPC AT_HWCAP2 definitions Anton Blanchard
2016-06-07 12:32 ` [PATCH 2/2] spapr: Better handling of ibm,pa-features TM bit Anton Blanchard
2016-06-08 2:26 ` David Gibson
2016-07-05 5:19 ` [PATCH 0/3] Rework spapr: Better handling of ibm, pa-features " Sam Bobroff
2016-07-05 5:19 ` [PATCH 1/3] spapr: Disable ibm, pa-features HTM bit Sam Bobroff
2016-07-05 5:51 ` David Gibson
2016-07-05 5:19 ` [PATCH 2/3] Add KVM_CAP_PPC_HTM to linux/kvm.h Sam Bobroff
2016-07-05 6:05 ` David Gibson
2016-07-06 4:41 ` Sam Bobroff
2016-07-06 5:09 ` David Gibson
2016-07-05 5:19 ` [PATCH 3/3] spapr: Set ibm, pa-features HTM from KVM_CAP_PPC_HTM Sam Bobroff
2016-07-05 6:52 ` David Gibson
2016-07-06 5:35 ` [PATCH v2 0/3] Rework spapr: Better handling of ibm, pa-features TM bit Sam Bobroff
2016-07-06 5:35 ` [PATCH v2 1/3] spapr: Disable ibm, pa-features HTM bit Sam Bobroff
2016-07-07 4:38 ` David Gibson
2016-07-06 5:35 ` [PATCH v2 2/3] Add KVM_CAP_PPC_HTM to linux/kvm.h Sam Bobroff
2016-07-07 4:38 ` David Gibson
2016-07-06 5:35 ` [PATCH v2 3/3] spapr: Set ibm, pa-features HTM from KVM_CAP_PPC_HTM Sam Bobroff
2016-07-07 4:39 ` David Gibson
2016-06-08 2:19 ` [PATCH 1/2] Add PowerPC AT_HWCAP2 definitions David Gibson
2016-04-05 2:12 ` [PATCH] spapr: Don't set the TM ibm,pa-features bit in PR KVM mode Paul Mackerras
2016-04-05 4:09 ` David Gibson
2016-04-05 7:33 ` Alexey Kardashevskiy
2016-04-04 11:11 ` [PATCH] powerpc: Clear user CPU feature bits if TM is disabled at runtime Anton Blanchard
2016-04-05 0:52 ` David Gibson
2016-04-05 9:35 ` Michael Ellerman
2016-04-05 9:56 ` Benjamin Herrenschmidt
2016-04-05 22:40 ` Michael Ellerman
2016-04-15 2:06 ` [PATCH 1/3] powerpc: scan_features() updates incorrect bits Anton Blanchard
2016-04-15 14:27 ` [1/3] " Michael Ellerman
2016-04-18 4:40 ` Michael Ellerman
2016-04-18 4:16 ` Michael Ellerman
2016-04-18 10:36 ` [PATCH v2 1/3] powerpc: scan_features() updates incorrect bits for REAL_LE Michael Ellerman
2016-04-19 10:09 ` [v2, " Michael Ellerman
2016-04-15 2:07 ` [PATCH 2/3] powerpc: Update cpu_user_features2 in scan_features() Anton Blanchard
2016-04-19 10:09 ` [2/3] " Michael Ellerman
2016-04-15 2:08 ` [PATCH 3/3] powerpc: Update TM user feature bits " Anton Blanchard
2016-04-19 10:09 ` [3/3] " Michael Ellerman
2016-04-04 11:09 ` PR KVM and TM issues Michael Neuling
2016-04-05 7:29 ` Alexey Kardashevskiy [this message]
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