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[Xen-devel] Re: [PATCH][RFC] fix some spinlock issues in vmsi
| To: | Qing He <qing.he@xxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: [PATCH][RFC] fix some spinlock issues in vmsi |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Fri, 06 Mar 2009 12:50:02 +0000 |
| Cc: | Isaku Yamahata <yamahata@xxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Kouya Shimura <kouya@xxxxxxxxxxxxxx> |
| Delivery-date: | Fri, 06 Mar 2009 04:50:34 -0800 |
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| In-reply-to: | <20090306092112.GD23417@ub-qhe2> |
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| Thread-index: | AcmePLF5kAjzjumKQsyMC2UOHWstHgAHV8mO |
| Thread-topic: | [PATCH][RFC] fix some spinlock issues in vmsi |
| User-agent: | Microsoft-Entourage/12.15.0.081119 |
On 06/03/2009 09:21, "Qing He" <qing.he@xxxxxxxxx> wrote: >> Add the locks, making it correct. Then optimise later as necessary, using >> RCU or (perhaps easier) just smaller locks: Per MSI-X or per-pci-dev or >> whatever. Throwing in racey code condemns us to subtle races forever more. > > Ok, I'll make a patch to use the locks. > > Do you think it's ok to assume that guest has already free the device > when calling remove_pci_device on hotplugging? Do you mean deinitialised and unloaded the device driver? -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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