search for: cpu_has_amd_erratum

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 -