search for: freezeing

On Mon, Oct 24, 2016 at 1:26 PM, Daniel Berlin <dberlin at dberlin.org> wrote: > > > On Sun, Oct 23, 2016 at 9:30 AM, Nuno Lopes <nuno.lopes at ist.utl.pt> wrote: > >> > So just to be clear (mainly so i can go back to letting y'all hash this >> out), in value numbering: >> > 1. I can value number all freeze operations on the same operand to the

> So just to be clear (mainly so i can go back to letting y'all hash this out), in value numbering: > 1. I can value number all freeze operations on the same operand to the same value > *as long as* > 2. I replace all freeze values of the same operand with a single one. > > Or am i misunderstanding? > If i've got it right, the issue i see with #2 is whether i can

The fact two IR values are defined the same way doesn't necessarily imply they are actually the same value. e.g. %a = load volatile i32, i32* %p %b = load volatile i32, i32* %p As Sanjoy said, though, it should always be legal to optimize all uses of different "freeze(%x)" values to use the same def - this is equivalent to choosing the same value for all freezes. It's just not

On Tue, Oct 25, 2016 at 10:19 AM, Nuno Lopes <nuno.lopes at ist.utl.pt> wrote: > >>>> So just to be clear (mainly so i can go back to letting y'all hash > this out), in value numbering: > >>>> 1. I can value number all freeze operations on the same operand to > the same value > >>>> *as long as* > >>>> 2. I replace all

> Only freezing it will > replace it with something concrete such that if x is poison then > freeze(x) == freeze(x), etc. Nit: it's not true that freeze(x) == freeze(x) in the current proposal. Each freeze can choose its own value. John

Hello, I've got a two node CTDB/Samba cluster that I'm having trouble with trying to add back a node after having to do an OS reload on it. The servers are running CTDB 2.5.1 and Samba 4.1.4 on AIX 7.1 TL2. The Samba CTDB databases and Samba service work fine from the node that was not reloaded. The rebuilt node is failing to re-add itself to the cluster. I'm looking for

Hi Peter, Should I assume that the virsh domfsfreeze, does not require the qemu-agent service in the guest? PS. I couldn't find the result. Afaik it looks like it is returning the amount of frozen/thawed filesystem's -----Original Message----- Cc: libvirt-users Subject: Re: guest-fsfreeze-freeze freezes all mounted block devices On Fri, Feb 14, 2020 at 22:14:55 +0100, Marc Roos

Hi Krzysztof, Krzysztof Parzyszek wrote: > On 10/18/2016 4:29 PM, Nuno Lopes wrote: >> Even %a and %b might not be the same in "%a = freeze(%x), %b = >> freeze(%x)" (each freeze returns an arbitrary, but fixed, value). > > Assume that %x is known to be a poison value and have: > %a = freeze(%x) > %b = freeze(%x) > > Is %a == %a true? Yes, %a is always

Hi all, After a recent upstream merge into our downstream sources we are suddenly encountering the freeze instruction in LLVM IR for div/rem pairs. This seems to be related to [1]. Our downstream target is GlobalISel only and unfortunately GlobalISel doesn't support this instruction yet, so most of our internal test-suite is now breaking due to GlobalISel not being able to translate this

I've been out of pocket for a while, so don't shoot me, if this has already been brought up. I'm having a problem with my desktop freezing up, and I'm running Cent OS 6. It seems to happen while I'm running firefox. I'm not sure if it's firefox, or the OS that's locking up. When it freezes up, nothing will respond, so I'm inclined to think it's the OS

I wondered if anyone here can confirm that virsh qemu-agent-command domain '{"execute":"guest-fsfreeze-freeze"}' Freezes all mounted block devices filesystems. So if I use 4 block devices they are all frozen for snapshotting. Or just the root fs?

On Mon, Feb 17, 2020 at 10:03:27 +0100, Marc Roos wrote: > Hi Peter, > > Should I assume that the virsh domfsfreeze, does not require the > qemu-agent service in the guest? No. That's the official way how to drive the "guest-fsfreeze-freeze" agent command via libvirt, thus you must have the guest agent the same way as you used it before. Using qemu-agent-command is a

Hi everybody, I am having a problem with the use of domfsfreeze command. It is freezing all the filesystems present on the domain, instead of freezing just the mountpoints provided. I am issuing the command-- # virsh domfsfreeze <domain> --mountpoint <mountpoint> Output was-- Froze 3 filesystem(s) I want to freeze a particular mount point on the VM, so that i can take a

Hi Krzysztof, freeze(poison) is different from undef today, in the sense that it is an instruction that produces some random, but fixed bit pattern. E.g. today in %x = undef %y = xor %x, %x we can fold %y to undef since each use of %x can independently see some arbitrary (up to the compiler / environment) bit pattern. But in the new proposal, in: %x = freeze(poison) %y = xor

> On 10/18/2016 3:12 PM, Sanjoy Das wrote: >> But in the new proposal, in: >> >> %x = freeze(poison) >> %y = xor %x, %x >> >> that is no longer allowed (%y _has_ to be 0) -- all uses of %x will see >> some garbage, but fixed bit pattern. > > What about this: > %x = phi poison, poison (I'm simplifying the syntax here) > Can this

Hi, We're looking at what may be a real-life bug encountered by our compiler related to `undef` values and function calls. The input program effectively contains the expression clamp(v, x, x) expecting that the result will be equal to `x`, even when `v` is read from uninitialized memory. In the input language, `clamp` is a built-in, so this expectation is somewhat reasonable. In our

Hmmm, using 'virsh domfsinfo testdom' gives me a crash in win2008r2 (using software from virtio-win-0.1.171.iso) Fault bucket , type 0 Event Name: APPCRASH Response: Not available Cab Id: 0 Problem signature: P1: qemu-ga.exe P2: 100.0.0.0 P3: 5c473543 P4: KERNELBASE.dll P5: 6.1.7601.24545 P6: 5e0eb6bd P7: c0000005 P8: 000000000000c4d2 P9: P10: Attached files: These files may be

After upgrading one of our servers from Fedora 7 to Fedora 9, from Samba 3.0 to 3.2.0-2.17.fc9 I noticed this strange phenomena: Windows 2003 and XP clients freeze when you type "\\server" in an explorer address bar where "server" is the name of the Samba 3.2 host. Windows 2000 clients don't freeze. 2003/XP clients don't freeze when you enter

Hello, I recently installed Ubuntu 24.04 on a MacBook Pro (Mid-2010) running a NVIDIA GeForce GT 330M adapter. Unfortunately the computer is constantly freezing. If I pass "nomodeset" to grub, the nouveau driver is not used and the computer does not freeze so it seems to be related to the nouveau driver. I am wanting to know if there are any parameters I can pass to nouveau to

Hi, Over the past few years we've been trying to kill poison somehow. There have been a few proposals, but they've all failed to pass the bar and/or to gather significant support (my own proposals included). We (David, Gil, John, Juneyoung, Sanjoy, Youngju, Yoonseung, and myself) have a new proposal to kill undef instead and replace it with poison + a new 'freeze' instruction. We