Messages in this thread | | | Subject | Re: [PATCH v2] um: Allow building and running on older hosts | From | Richard Weinberger <> | Date | Fri, 26 May 2017 00:34:31 +0200 |
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Thomas, Florian,
Am 26.05.2017 um 00:28 schrieb Florian Fainelli: > On 05/25/2017 12:51 PM, Thomas Meyer wrote: >> >>> Am 25.05.2017 um 20:36 schrieb Florian Fainelli <f.fainelli@gmail.com>: >>> >>> Commit a78ff1112263 ("um: add extended processor state save/restore >>> support") and b6024b21fec8 ("um: extend fpstate to _xstate to support >>> YMM registers") forced the use of the x86 FP _xstate and >>> PTRACE_GETREGSET/SETREGSET. On older hosts, we would neither be able to >>> build UML nor run it anymore with these two commits applied because we >>> don't have definitions for struct _xstate nor these two ptrace requests. >> >> Btw. what soy you mean with older host? I need to revert two commits to make an UML kernel work again on a Fedora 25 installation. > > This is centos 6.9, so kernel 2.6.32 and glibc 2.12, this neither has > xstate nor PTRACE_GETREGSET/SETREGSET, hence this patch.
Commits a78ff1112263 and b6024b21fec8 are broken. You see two different issues. Eli, please have a look too.
Thanks, //richard
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