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[Xen-devel] PROPOSAL: Remove 32-bit x86 host support in 4.2 development
| To: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx> |
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| Subject: | [Xen-devel] PROPOSAL: Remove 32-bit x86 host support in 4.2 development branch |
| From: | Keir Fraser <keir.xen@xxxxxxxxx> |
| Date: | Thu, 17 Mar 2011 14:21:35 +0000 |
| Cc: | |
| Delivery-date: | Thu, 17 Mar 2011 07:22:39 -0700 |
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| Thread-topic: | PROPOSAL: Remove 32-bit x86 host support in 4.2 development branch |
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Folks, There's been discussion in the past about eventually removing support for 32-bit x86 in the development branch of the hypervisor. The reasons being: * It takes developer effort to maintain and test * Most repackagers are supplying 64-bit only hypervisor binary these days * 32-bit target is not supported in any case for various new hypervisor features (e.g., memory paging, memory sharing, memory access trapping) * 64-bit support has been standard in all mainstream x86 processors for about the last 5 years. With a 64-bit processor there is no reason to run the 32-bit hypervisor, as the 64-bit hypervisor supports all 32-bit guests. With 4.1 branched I'd like to raise this topic again. Does anyone have a strong argument for keeping the 32-bit x86 target alive? Thanks, Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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