From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fabiano Rosas Date: Fri, 12 Feb 2021 20:33:33 +0000 Subject: Re: [RFC PATCH 3/9] KVM: PPC: Book3S 64: add hcall interrupt handler Message-Id: <87r1llxbz6.fsf@linux.ibm.com> List-Id: References: <20210202030313.3509446-1-npiggin@gmail.com> <20210202030313.3509446-4-npiggin@gmail.com> In-Reply-To: <20210202030313.3509446-4-npiggin@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Nicholas Piggin , kvm-ppc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org, Nicholas Piggin Nicholas Piggin writes: > Add a separate hcall entry point. This can be used to deal with the > different calling convention. > > Signed-off-by: Nicholas Piggin Reviewed-by: Fabiano Rosas > --- > arch/powerpc/kernel/exceptions-64s.S | 4 ++-- > arch/powerpc/kvm/book3s_64_entry.S | 4 ++++ > 2 files changed, 6 insertions(+), 2 deletions(-) > > diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S > index e6f7fc7c61a1..c25395b5921a 100644 > --- a/arch/powerpc/kernel/exceptions-64s.S > +++ b/arch/powerpc/kernel/exceptions-64s.S > @@ -2028,13 +2028,13 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) > * Requires __LOAD_FAR_HANDLER beause kvmppc_interrupt 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 > > diff --git a/arch/powerpc/kvm/book3s_64_entry.S b/arch/powerpc/kvm/book3s_64_entry.S > index 8e7216f3c3ee..3b894b90862f 100644 > --- a/arch/powerpc/kvm/book3s_64_entry.S > +++ b/arch/powerpc/kvm/book3s_64_entry.S > @@ -9,6 +9,10 @@ > /* > * We come here from the first-level interrupt handlers. > */ > +.global kvmppc_hcall > +.balign IFETCH_ALIGN_BYTES > +kvmppc_hcall: > + > .global kvmppc_interrupt > .balign IFETCH_ALIGN_BYTES > kvmppc_interrupt: