From: will.deacon@arm•com (Will Deacon)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v3 4/5] arm64: kvm: Adopt new alternative assembler macros
Date: Wed, 22 Jul 2015 16:17:39 +0100 [thread overview]
Message-ID: <20150722151739.GM6650@arm.com> (raw)
In-Reply-To: <1437564065-4356-5-git-send-email-daniel.thompson@linaro.org>
Marc, Christoffer,
On Wed, Jul 22, 2015 at 12:21:04PM +0100, Daniel Thompson wrote:
> Convert the dynamic patching for ARM64_HAS_SYSREG_GIC_CPUIF over to
> the newly added alternative assembler macros.
Do you mind if I take this via the arm64 tree? It won't apply in
isolation and I'd expect conflicts to be small/trivial to resolve.
Cheers,
Will
> ---
> arch/arm64/kvm/hyp.S | 12 ++++++++++--
> 1 file changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/kvm/hyp.S b/arch/arm64/kvm/hyp.S
> index 17a8fb14f428..10915aaf0b01 100644
> --- a/arch/arm64/kvm/hyp.S
> +++ b/arch/arm64/kvm/hyp.S
> @@ -810,7 +810,11 @@
> * Call into the vgic backend for state saving
> */
> .macro save_vgic_state
> - alternative_insn "bl __save_vgic_v2_state", "bl __save_vgic_v3_state", ARM64_HAS_SYSREG_GIC_CPUIF
> +alternative_if_not ARM64_HAS_SYSREG_GIC_CPUIF
> + bl __save_vgic_v2_state
> +alternative_else
> + bl __save_vgic_v3_state
> +alternative_endif
> mrs x24, hcr_el2
> mov x25, #HCR_INT_OVERRIDE
> neg x25, x25
> @@ -827,7 +831,11 @@
> orr x24, x24, #HCR_INT_OVERRIDE
> orr x24, x24, x25
> msr hcr_el2, x24
> - alternative_insn "bl __restore_vgic_v2_state", "bl __restore_vgic_v3_state", ARM64_HAS_SYSREG_GIC_CPUIF
> +alternative_if_not ARM64_HAS_SYSREG_GIC_CPUIF
> + bl __restore_vgic_v2_state
> +alternative_else
> + bl __restore_vgic_v3_state
> +alternative_endif
> .endm
>
> .macro save_timer_state
> --
> 2.4.3
>
next prev parent reply other threads:[~2015-07-22 15:17 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-10 13:48 [PATCH] arm64: alternative: Provide if/else/endif assembler macros Daniel Thompson
2015-07-16 18:19 ` Will Deacon
2015-07-17 10:42 ` Daniel Thompson
2015-07-20 15:09 ` [PATCH v2 0/5] " Daniel Thompson
2015-07-20 15:10 ` [PATCH v2 1/5] " Daniel Thompson
2015-07-20 17:12 ` Will Deacon
2015-07-22 11:08 ` Daniel Thompson
2015-07-20 15:10 ` [PATCH v2 2/5] arm64: mm: Adopt new alternative " Daniel Thompson
2015-07-20 15:10 ` [PATCH v2 3/5] arm64: kernel: " Daniel Thompson
2015-07-20 15:10 ` [PATCH v2 4/5] arm64: kvm: " Daniel Thompson
2015-07-20 15:10 ` [PATCH v2 5/5] arm64: alternative: Remove alternative_insn macro Daniel Thompson
2015-07-22 11:21 ` [PATCH v3 0/5] arm64: alternative: Provide if/else/endif assembler macros Daniel Thompson
2015-07-22 11:21 ` [PATCH v3 1/5] " Daniel Thompson
2015-07-22 11:21 ` [PATCH v3 2/5] arm64: mm: Adopt new alternative " Daniel Thompson
2015-07-22 11:21 ` [PATCH v3 3/5] arm64: kernel: " Daniel Thompson
2015-07-22 11:21 ` [PATCH v3 4/5] arm64: kvm: " Daniel Thompson
2015-07-22 15:17 ` Will Deacon [this message]
2015-07-22 15:55 ` Marc Zyngier
2015-07-22 11:21 ` [PATCH v3 5/5] arm64: alternative: Remove alternative_insn macro Daniel Thompson
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