From: Fabiano Rosas <farosas@linux.ibm.com>
To: Nicholas Piggin <npiggin@gmail.com>, kvm-ppc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org, Nicholas Piggin <npiggin@gmail.com>
Subject: Re: [RFC PATCH 3/9] KVM: PPC: Book3S 64: add hcall interrupt handler
Date: Fri, 12 Feb 2021 17:33:33 -0300 [thread overview]
Message-ID: <87r1llxbz6.fsf@linux.ibm.com> (raw)
In-Reply-To: <20210202030313.3509446-4-npiggin@gmail.com>
Nicholas Piggin <npiggin@gmail.com> writes:
> 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: Fabiano Rosas <farosas@linux.ibm.com>
> ---
> 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:
next prev parent reply other threads:[~2021-02-12 20:38 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-02 3:03 [RFC PATCH 0/9] KVM: PPC: Book3S: C-ify the P9 entry/exit code Nicholas Piggin
2021-02-02 3:03 ` [RFC PATCH 1/9] KVM: PPC: Book3S 64: move KVM interrupt entry to a common entry point Nicholas Piggin
2021-02-05 21:28 ` Fabiano Rosas
2021-02-19 5:18 ` Daniel Axtens
2021-02-19 8:03 ` Nicholas Piggin
2021-02-02 3:03 ` [RFC PATCH 2/9] KVM: PPC: Book3S 64: Move GUEST_MODE_SKIP test into KVM Nicholas Piggin
2021-02-12 20:33 ` Fabiano Rosas
2021-02-19 7:53 ` Nicholas Piggin
2021-02-19 6:03 ` Daniel Axtens
2021-02-19 7:56 ` Nicholas Piggin
2021-02-02 3:03 ` [RFC PATCH 3/9] KVM: PPC: Book3S 64: add hcall interrupt handler Nicholas Piggin
2021-02-12 20:33 ` Fabiano Rosas [this message]
2021-02-02 3:03 ` [RFC PATCH 4/9] KVM: PPC: Book3S HV: Move hcall early register setup to KVM Nicholas Piggin
2021-02-02 3:03 ` [RFC PATCH 5/9] powerpc/64s: Remove EXSLB interrupt save area Nicholas Piggin
2021-02-02 3:03 ` [RFC PATCH 6/9] KVM: PPC: Book3S HV: Move interrupt early register setup to KVM Nicholas Piggin
2021-02-02 3:03 ` [RFC PATCH 7/9] KVM: PPC: Book3S HV: move bad_host_intr check to HV handler Nicholas Piggin
2021-02-02 3:03 ` [RFC PATCH 8/9] KVM: PPC: Book3S HV: Minimise hcall handler calling convention differences Nicholas Piggin
2021-02-02 3:03 ` [RFC PATCH 9/9] KVM: PPC: Book3S HV: Implement the rest of the P9 entry/exit handling in C Nicholas Piggin
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