xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: PPC: Book3S HV: Add new POWER9 guest-accessible SPRs

Browse Source 
This adds code to handle two new guest-accessible special-purpose
registers on POWER9: TIDR (thread ID register) and PSSCR (processor
stop status and control register).  They are context-switched
between host and guest, and the guest values can be read and set
via the one_reg interface.

The PSSCR contains some fields which are guest-accessible and some
which are only accessible in hypervisor mode.  We only allow the
guest-accessible fields to be read or set by userspace.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Paul Mackerras
2016-11-18 13:11:42 +11:00
parent 83677f551e
commit e9cf1e0856
6 changed files with 59 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/include/asm/kvm_host.h
View File

@@ -517,6 +517,8 @@ struct kvm_vcpu_arch {
ulong tcscr;
ulong acop;
ulong wort;
ulong tid;
ulong psscr;
ulong shadow_srr1;
#endif
u32 vrsave; /* also USPRG0 */