lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

powerpc: Base support for exceptions using HSRR0/1

Browse Source 
Pass the register type to the prolog, also provides alternate "HV"
version of hardware interrupt (0x500) and adjust LPES accordingly

We tag those interrupts by setting bit 0x2 in the trap number

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt
2011-04-05 14:20:31 +10:00
parent 2dd60d79e0
commit a5d4f3ad3a
9 changed files with 86 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
arch/powerpc/kvm/book3s_segment.S
View File

@ -155,9 +155,15 @@ kvmppc_handler_trampoline_exit:
PPC_LL r2, (SHADOW_VCPU_OFF + SVCPU_HOST_R2)(r13)
/* Save guest PC and MSR */
mfsrr0 r3
andi. r0,r12,0x2
beq 1f
mfspr r3,SPRN_HSRR0
mfspr r4,SPRN_HSRR1
andi. r12,r12,0x3ffd
b 2f
1: mfsrr0 r3
mfsrr1 r4
2:
PPC_STL r3, (SHADOW_VCPU_OFF + SVCPU_PC)(r13)
PPC_STL r4, (SHADOW_VCPU_OFF + SVCPU_SHADOW_SRR1)(r13)