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| author |  Florian Fainelli <f.fainelli@gmail.com>
| 2017-05-25 11:36:26 -0700 |
|---|---|---|
| committer |  Richard Weinberger <richard@nod.at>
| 2017-07-05 23:31:28 +0200 |
| commit | 0a987645672ebde7844a9c0732a5a25f3d4bb6c6 (patch) | |
| tree | 838f821a1b4a2ba33219fabac4913ad0a00180f4 /arch/um | |
| parent | um: Avoid longjmp/setjmp symbol clashes with libpthread.a (diff) | |
| download | linux-0a987645672ebde7844a9c0732a5a25f3d4bb6c6.tar.gz linux-0a987645672ebde7844a9c0732a5a25f3d4bb6c6.tar.bz2 linux-0a987645672ebde7844a9c0732a5a25f3d4bb6c6.zip | |
um: Allow building and running on older hosts
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.
We can determine at build time which fp context structure to check
against, just like we can keep using the old i387 fp save/restore if
PTRACE_GETRESET/SETREGSET are not defined.
Fixes: a78ff1112263 ("um: add extended processor state save/restore support")
Fixes: b6024b21fec8 ("um: extend fpstate to _xstate to support YMM registers")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um')
0 files changed, 0 insertions, 0 deletions