From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 3/4] arm64: Use __tlbi() macros in KVM code
Date: Fri, 27 Jan 2017 15:03:22 +0000 [thread overview]
Message-ID: <20170127150321.GM21144@arm.com> (raw)
In-Reply-To: <20170125155232.10277-3-cov@codeaurora.org>
On Wed, Jan 25, 2017 at 10:52:31AM -0500, Christopher Covington wrote:
> Refactor the KVM code to use the __tlbi macros, which will allow an errata
> workaround that repeats tlbi dsb sequences to only change one location.
> This is not intended to change the generated assembly and comparing before
> and after vmlinux objdump shows no functional changes.
>
> Signed-off-by: Christopher Covington <cov@codeaurora.org>
> ---
> arch/arm64/kvm/hyp/tlb.c | 13 +++++++------
> 1 file changed, 7 insertions(+), 6 deletions(-)
[...]
> @@ -82,7 +83,7 @@ void __hyp_text __kvm_tlb_flush_local_vmid(struct kvm_vcpu *vcpu)
> void __hyp_text __kvm_flush_vm_context(void)
> {
> dsb(ishst);
> - asm volatile("tlbi alle1is \n"
> - "ic ialluis ": : );
> + __tlbi(alle1is);
> + asm volatile("ic ialluis" : : );
> dsb(ish);
Should be a separate patch, but this can now be a __flush_icache_all instead
of the open-coded asm.
Will
next prev parent reply other threads:[~2017-01-27 15:03 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-25 15:52 [PATCH v4 1/4] arm64: Define Falkor v1 CPU Christopher Covington
2017-01-25 15:52 ` [PATCH v4 2/4] arm64: Work around Falkor erratum 1003 Christopher Covington
2017-01-27 14:38 ` Mark Rutland
2017-01-27 14:43 ` Mark Rutland
2017-01-27 21:52 ` Christopher Covington
2017-01-30 10:56 ` Mark Rutland
2017-01-30 22:09 ` Christopher Covington
2017-01-27 19:18 ` Timur Tabi
2017-01-31 12:37 ` Mark Rutland
2017-01-31 17:48 ` Christopher Covington
2017-01-31 17:56 ` Marc Zyngier
2017-02-01 16:29 ` Christopher Covington
2017-02-01 16:33 ` Will Deacon
2017-02-01 17:36 ` Catalin Marinas
2017-02-01 17:41 ` Will Deacon
2017-02-01 17:49 ` Catalin Marinas
2017-02-01 17:51 ` Catalin Marinas
2017-02-01 17:59 ` Will Deacon
2017-02-01 18:22 ` Catalin Marinas
2017-02-01 18:34 ` Will Deacon
2017-02-01 18:38 ` Catalin Marinas
2017-02-08 0:36 ` Christopher Covington
2017-01-25 15:52 ` [PATCH v4 3/4] arm64: Use __tlbi() macros in KVM code Christopher Covington
2017-01-25 19:39 ` Christoffer Dall
2017-01-27 13:53 ` Will Deacon
2017-02-01 17:02 ` Punit Agrawal
2017-02-01 17:08 ` Will Deacon
2017-02-01 17:14 ` Punit Agrawal
2017-01-27 15:03 ` Will Deacon [this message]
2017-01-25 15:52 ` [PATCH v4 4/4] arm64: Work around Falkor erratum 1009 Christopher Covington
2017-01-27 15:07 ` Will Deacon
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