Displaying 4 results from an estimated 4 matches for "cpu_has_amd_erratum".
2011 Dec 15
10
fsincos emulation on AMD CPUs
All,
in the light of erratum #573 I''m wondering if we need to tweak or
conditionally suppress fsincos emulation. The question is whether there
is any possibility for getting the emulator to hit this instruction on AMD
(as no real mode emulation ought to be taking place there), i.e.
whether there are places where emulation gets continued eagerly
in anticipation of the need for emulation
2011 Jul 27
0
ubuntu 11.04 compile xen domain0 arch/x86/kernel/cpu/amd.c: In function ‘init_amd’ error
...‘amd_erratum_400’ was here
arch/x86/kernel/cpu/amd.c:677:1: error: extern declaration of
‘amd_erratum_383’ follows declaration with no linkage
arch/x86/kernel/cpu/amd.c:675:11: note: previous definition of
‘amd_erratum_383’ was here
arch/x86/kernel/cpu/amd.c:721:1: error: non-static declaration of
‘cpu_has_amd_erratum’ follows static declaration
arch/x86/kernel/cpu/amd.c:679:6: note: previous definition of
‘cpu_has_amd_erratum’ was here
arch/x86/kernel/cpu/amd.c:721:1: error: expected declaration or statement at
end of input
arch/x86/kernel/cpu/amd.c: At top level:
arch/x86/kernel/cpu/amd.c:446:23: warning: ‘ini...
2012 Oct 02
18
[PATCH 0/3] x86: adjust entry frame generation
This set of patches converts the way frames gets created from
using PUSHes/POPs to using MOVes, thus allowing (in certain
cases) to avoid saving/restoring part of the register set.
While the place where the (small) win from this comes from varies
between CPUs, the net effect is a 1 to 2% reduction on a
combined interruption entry and exit when the full state save
can be avoided.
1: use MOV
2018 Mar 04
9
[PATCH v4 0/7] jailhouse: Enhance secondary Jailhouse guest support /wrt PCI
Basic x86 support [1] for running Linux as secondary Jailhouse [2] guest
is currently pending in the tip tree. This builds on top and enhances
the PCI support for x86 and also ARM guests (ARM[64] does not require
platform patches and works already).
Key elements of this series are:
- detection of Jailhouse via device tree hypervisor node
- function-level PCI scan if Jailhouse is detected
-