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Sun, 05 Jul 2020 14:45:26 +0100 Date: Sun, 05 Jul 2020 14:45:25 +0100 Message-ID: <87pn9adqiy.wl-maz@kernel.org> From: Marc Zyngier To: David Brazdil Subject: Re: [PATCH v4 08/15] arm64: kvm: Duplicate hyp/tlb.c for VHE/nVHE In-Reply-To: <20200625131420.71444-9-dbrazdil@google.com> References: <20200625131420.71444-1-dbrazdil@google.com> <20200625131420.71444-9-dbrazdil@google.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 EasyPG/1.0.0 Emacs/26.3 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: dbrazdil@google.com, will@kernel.org, catalin.marinas@arm.com, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, android-kvm@google.com, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200705_094528_663183_6F93D9AF X-CRM114-Status: GOOD ( 19.33 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel-team@android.com, Suzuki K Poulose , android-kvm@google.com, Catalin Marinas , linux-kernel@vger.kernel.org, James Morse , linux-arm-kernel@lists.infradead.org, Will Deacon , kvmarm@lists.cs.columbia.edu, Julien Thierry Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, 25 Jun 2020 14:14:13 +0100, David Brazdil wrote: > > tlb.c contains code for flushing the TLB, with code shared between VHE/nVHE. > Because common code is small, duplicate tlb.c and specialize each copy for > VHE/nVHE. > > Signed-off-by: David Brazdil > --- > arch/arm64/kernel/image-vars.h | 14 +-- > arch/arm64/kvm/hyp/Makefile | 2 +- > arch/arm64/kvm/hyp/nvhe/Makefile | 2 +- > arch/arm64/kvm/hyp/{ => nvhe}/tlb.c | 94 +--------------- > arch/arm64/kvm/hyp/vhe/Makefile | 2 +- > arch/arm64/kvm/hyp/vhe/tlb.c | 162 ++++++++++++++++++++++++++++ > 6 files changed, 178 insertions(+), 98 deletions(-) > rename arch/arm64/kvm/hyp/{ => nvhe}/tlb.c (62%) > create mode 100644 arch/arm64/kvm/hyp/vhe/tlb.c > [...] > diff --git a/arch/arm64/kvm/hyp/vhe/tlb.c b/arch/arm64/kvm/hyp/vhe/tlb.c > new file mode 100644 > index 000000000000..35e8e112ba28 > --- /dev/null > +++ b/arch/arm64/kvm/hyp/vhe/tlb.c [...] > +void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa) > +{ > + struct tlb_inv_context cxt; > + > + dsb(ishst); > + > + /* Switch to requested VMID */ > + kvm = kern_hyp_va(kvm); nit: this is now superfluous. I'll drop it locally. Thanks, M. -- Without deviation from the norm, progress is not possible. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel