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Tue, 11 Feb 2020 17:50:21 +0000 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Subject: [PATCH v2 47/94] KVM: arm64: nv: Handle traps for timer _EL02 and _EL2 sysregs accessors Date: Tue, 11 Feb 2020 17:48:51 +0000 Message-Id: <20200211174938.27809-48-maz@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200211174938.27809-1-maz@kernel.org> References: <20200211174938.27809-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, andre.przywara@arm.com, christoffer.dall@arm.com, Dave.Martin@arm.com, jintack@cs.columbia.edu, alexandru.elisei@arm.com, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.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-20200211_095103_581077_C6159BF5 X-CRM114-Status: GOOD ( 10.12 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [198.145.29.99 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender 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: Suzuki K Poulose , Andre Przywara , Christoffer Dall , Dave Martin , James Morse , Alexandru Elisei , Jintack Lim , Julien Thierry Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Andre Przywara Add trap handlers for the timer system registers accessed from a guest hypervisors using either _EL02 or _EL2 system register access instructions. Signed-off-by: Andre Przywara Signed-off-by: Jintack Lim Signed-off-by: Marc Zyngier --- arch/arm64/include/asm/sysreg.h | 6 ++++++ arch/arm64/kvm/sys_regs.c | 15 +++++++++++++++ 2 files changed, 21 insertions(+) diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index bf465ddde59e..92c97a19369e 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -496,6 +496,12 @@ #define SYS_CNTVOFF_EL2 sys_reg(3, 4, 14, 0, 3) #define SYS_CNTHCTL_EL2 sys_reg(3, 4, 14, 1, 0) +#define SYS_CNTHP_TVAL_EL2 sys_reg(3, 4, 14, 2, 0) +#define SYS_CNTHP_CTL_EL2 sys_reg(3, 4, 14, 2, 1) +#define SYS_CNTHP_CVAL_EL2 sys_reg(3, 4, 14, 2, 2) +#define SYS_CNTHV_TVAL_EL2 sys_reg(3, 4, 14, 3, 0) +#define SYS_CNTHV_CTL_EL2 sys_reg(3, 4, 14, 3, 1) +#define SYS_CNTHV_CVAL_EL2 sys_reg(3, 4, 14, 3, 2) /* VHE encodings for architectural EL0/1 system registers */ #define SYS_SCTLR_EL12 sys_reg(3, 5, 1, 0, 0) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 527319ff83f1..5d9ca3988745 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2078,6 +2078,13 @@ static const struct sys_reg_desc sys_reg_descs[] = { { SYS_DESC(SYS_CNTVOFF_EL2), access_rw, reset_val, CNTVOFF_EL2, 0 }, { SYS_DESC(SYS_CNTHCTL_EL2), access_rw, reset_val, CNTHCTL_EL2, 0 }, + { SYS_DESC(SYS_CNTHP_TVAL_EL2), access_arch_timer }, + { SYS_DESC(SYS_CNTHP_CTL_EL2), access_arch_timer }, + { SYS_DESC(SYS_CNTHP_CVAL_EL2), access_arch_timer }, + { SYS_DESC(SYS_CNTHV_TVAL_EL2), access_arch_timer }, + { SYS_DESC(SYS_CNTHV_CTL_EL2), access_arch_timer }, + { SYS_DESC(SYS_CNTHV_CVAL_EL2), access_arch_timer }, + { SYS_DESC(SYS_SCTLR_EL12), access_vm_reg, reset_val, SCTLR_EL1, 0x00C50078 }, { SYS_DESC(SYS_CPACR_EL12), access_rw, reset_val, CPACR_EL1, 0 }, { SYS_DESC(SYS_TTBR0_EL12), access_vm_reg, reset_unknown, TTBR0_EL1 }, @@ -2095,6 +2102,14 @@ static const struct sys_reg_desc sys_reg_descs[] = { { SYS_DESC(SYS_CONTEXTIDR_EL12), access_vm_reg, reset_val, CONTEXTIDR_EL1, 0 }, { SYS_DESC(SYS_CNTKCTL_EL12), access_rw, reset_val, CNTKCTL_EL1, 0 }, + { SYS_DESC(SYS_CNTP_TVAL_EL02), access_arch_timer }, + { SYS_DESC(SYS_CNTP_CTL_EL02), access_arch_timer }, + { SYS_DESC(SYS_CNTP_CVAL_EL02), access_arch_timer }, + + { SYS_DESC(SYS_CNTV_TVAL_EL02), access_arch_timer }, + { SYS_DESC(SYS_CNTV_CTL_EL02), access_arch_timer }, + { SYS_DESC(SYS_CNTV_CVAL_EL02), access_arch_timer }, + { SYS_DESC(SYS_SP_EL2), NULL, reset_unknown, SP_EL2 }, };