Christian Borntraeger 92e6ecf392 [S390] Fix hypervisor detection for KVM ... Currently we use the cpuid (via STIDP instruction) to recognize LPAR, z/VM and KVM. The architecture states, that bit 0-7 of STIDP returns all zero, and if STIDP is executed in a virtual machine, the VM operating system will replace bits 0-7 with FF. KVM should not use FE to distinguish z/VM from KVM for interested guests. The proper way to detect the hypervisor is the STSI (Store System Information) instruction, which return information about the hypervisors via function code 3, selector1=2, selector2=2. This patch changes the detection routine of Linux to use STSI instead of STIDP. This detection is earlier than bootmem, we have to use a static buffer. Since STSI expects a 4kb block (4kb aligned) this patch also changes the init.data alignment for s390. As this section will be freed during boot, this should be no problem. Patch is tested with LPAR, z/VM, KVM on LPAR, and KVM under z/VM. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2009-03-26 15:24:09 +01:00
..
diag.c	[S390] Use unsigned long long for u64 on 64bit.	2009-01-09 12:15:07 +01:00
gaccess.h	KVM: s390: Change guestaddr type in gaccess	2008-07-27 11:35:57 +03:00
intercept.c	KVM: s390: Fix possible host kernel bug on lctl(g) handling	2008-07-27 11:36:20 +03:00
interrupt.c	[S390] Use unsigned long long for u64 on 64bit.	2009-01-09 12:15:07 +01:00
Kconfig
kvm-s390.c	[S390] Fix hypervisor detection for KVM	2009-03-26 15:24:09 +01:00
kvm-s390.h
Makefile
priv.c	[S390] Use unsigned long long for u64 on 64bit.	2009-01-09 12:15:07 +01:00
sie64a.S
sigp.c	KVM: s390: Fix problem state handling in guest sigp handler	2008-11-23 14:34:39 +02:00