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A comment on Intel mulls cutting 16 and 32-bit support, booting straight into 64-bit mode. Parent comment

Re:Intel mulls cutting 16 and 32-bit support, booting straig... by rbanffy on Thursday May 25, 2023 @04:37PM (#36075867)
Fun to think that it’s more or less how zVM starts stuff. It took me a while to mentally accept the concept of VM that zVM (in reality, I was playing with VM/370) has, which is not like anything non-mainframe users would be familiar with.

But you can also run Linux directly on an LPAR under the thin hypervisor (which I forgot the name) that runs zVM.

The indignity of the mainframe is that it’s booted under control of an x86 machine that itself boots up as an 8086. At least these days the service elements run Linux.

[ Parent | on HN ]
Re:Intel mulls cutting 16 and 32-bit support, booting straig... by skissane on Thursday May 25, 2023 @05:16PM (#36076337)
> But you can also run Linux directly on an LPAR under the thin hypervisor (which I forgot the name) that runs zVM.

The name is PR/SM - which, from what I’ve heard, actually started life as a modified version of VM

> The indignity of the mainframe is that it’s booted under control of an x86 machine that itself boots up as an 8086. At least these days the service elements run Linux.

Poor OS/2, no more booting mainframes for it anymore, unless they are very old ones

[ Parent | on HN ]
Re:Intel mulls cutting 16 and 32-bit support, booting straig... by rbanffy on Sunday May 28, 2023 @04:56PM (#36107710)
> Poor OS/2, no more booting mainframes for it anymore, unless they are very old ones

At least it's not Windows.

[ Parent | on HN ]