Bug 1432295

Summary: Add gpa2hpa command to qemu hmp
Product: Red Hat Enterprise Linux 7 Reporter: Guo, Zhiyi <zhguo>
Component: qemu-kvm-rhevAssignee: Paolo Bonzini <pbonzini>
Status: CLOSED ERRATA QA Contact: Chao Yang <chayang>
Severity: high Docs Contact:
Priority: unspecified    
Version: 7.4CC: chayang, juzhang, michen, pbonzini, plai, virt-maint, yuhuang, zhguo
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard:
Fixed In Version: qemu-kvm-rhev-2.9.0-2.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-08-02 03:39:56 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1335351    
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Description Flags
x-gpa2hpa patch none

Description Guo, Zhiyi 2017-03-15 02:22:31 UTC 
Created attachment 1263167 [details]
x-gpa2hpa patch

Description of problem:
Test against Bug 1402104 - [Intel 7.4 FEAT] KVM local MCE enabling - qemu
Without x-gpa2hpa command, only visibility of lmce can be tested but leave the functionnality cannot be tested inside guest.

x-gpa2hpa maybe for debug only, so could anyone help to confirm whether we need this command from qemu-kvm-rhev?

Attach the x-gpa2hpa patch provided by Zhang, Haozhong(haozhong.zhang) from intel

Version-Release number of selected component (if applicable):
qemu-kvm-rhev

How reproducible:
100%

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:
Comment 2 Miroslav Rezanina 2017-04-28 10:07:33 UTC 
Fix included in qemu-kvm-rhev-2.9.0-2.el7
Comment 4 Ademar Reis 2017-06-08 01:50:32 UTC 
*** Bug 1450130 has been marked as a duplicate of this bug. ***
Comment 5 Guo, Zhiyi 2017-06-15 10:01:35 UTC 
Test against qemu-kvm-rhev-2.9.0-9.el7.x86_64, I can see gpa2hpa command in hmp. And use gpa2hpa following the way in https://bugzilla.redhat.com/attachment.cgi?id=1262511(this is attached to bug 1402102), I can pass the test steps written by Haozhong from intel.

steps:
1. run vtop to get guest address:
# ./vtop 
gva=0x0x7f4082f58000
gpa=0xa9260000
2. Translate address using gpa2hpa:
(qemu) gpa2hpa 0xa9260000
Host physical address for 0xa9260000 (pc.ram) is 0x123ffb000
3. In guest, write this address to SRAO and pass it to mce-inject.
echo "ADDR 0x123ffb000" >> SRAO
mce-inject < SRAO
4. Check key information from lmce log:
# cat /var/log/mcelog | grep SRAO
SRAO
# cat /var/log/mcelog | grep 123ffb000
MISC 8c ADDR 123ffb000
# cat /var/log/mcelog | grep LMCE
# 

Above test match the expect result from https://bugzilla.redhat.com/attachment.cgi?id=1262511

Per robert's result in Bug 1402104 - [Intel 7.4 FEAT] KVM local MCE enabling - qemu, intel confirm 1402104 is passed, so gpa2hpa is worked well in intel's verification.

So mark the bug verified.
Comment 7 errata-xmlrpc 2017-08-02 03:39:56 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2017:2392