iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: PPC: Book3S 64: add hcall interrupt handler

Browse Source 
Add a separate hcall entry point. This can be used to deal with the
different calling convention.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210528090752.3542186-4-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2021-05-28 19:07:23 +10:00 committed by Michael Ellerman
parent f33e0702d9
commit 31c67cfe2a
2 changed files with 8 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/powerpc/kernel/exceptions-64s.S
View File

@ -1966,16 +1966,16 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
ori r12,r12,0xc00
#ifdef CONFIG_RELOCATABLE
/*
* Requires __LOAD_FAR_HANDLER beause kvmppc_interrupt lives
* Requires __LOAD_FAR_HANDLER beause kvmppc_hcall lives
* outside the head section.
*/
__LOAD_FAR_HANDLER(r10, kvmppc_interrupt)
__LOAD_FAR_HANDLER(r10, kvmppc_hcall)
mtctr r10
ld r10,PACA_EXGEN+EX_R10(r13)
bctr
#else
ld r10,PACA_EXGEN+EX_R10(r13)
b kvmppc_interrupt
b kvmppc_hcall
#endif
#endif

6
arch/powerpc/kvm/book3s_64_entry.S
View File

@ -8,9 +8,13 @@
#include <asm/reg.h>
/*
* This is branched to from interrupt handlers in exception-64s.S which set
* These are branched to from interrupt handlers in exception-64s.S which set
* IKVM_REAL or IKVM_VIRT, if HSTATE_IN_GUEST was found to be non-zero.
*/
.global kvmppc_hcall
.balign IFETCH_ALIGN_BYTES
kvmppc_hcall:
.global kvmppc_interrupt
.balign IFETCH_ALIGN_BYTES
kvmppc_interrupt: