From: Palmer Dabbelt <palmerdabbelt@google.com>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-riscv@nongnu.org, qemu-devel@nongnu.org,
Alistair Francis <alistair.francis@wdc.com>,
Palmer Dabbelt <palmer@sifive.com>,
Palmer Dabbelt <palmerdabbelt@google.com>
Subject: [PULL 19/38] target/ricsv: Flush the TLB on virtulisation mode changes
Date: Mon, 2 Mar 2020 16:48:29 -0800 [thread overview]
Message-ID: <20200303004848.136788-20-palmerdabbelt@google.com> (raw)
In-Reply-To: <20200303004848.136788-1-palmerdabbelt@google.com>
From: Alistair Francis <alistair.francis@wdc.com>
To ensure our TLB isn't out-of-date we flush it on all virt mode
changes. Unlike priv mode this isn't saved in the mmu_idx as all
guests share V=1. The easiest option is just to flush on all changes.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
---
target/riscv/cpu_helper.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
index ccf67aca05..a8b114ae16 100644
--- a/target/riscv/cpu_helper.c
+++ b/target/riscv/cpu_helper.c
@@ -181,6 +181,11 @@ void riscv_cpu_set_virt_enabled(CPURISCVState *env, bool enable)
return;
}
+ /* Flush the TLB on all virt mode changes. */
+ if (get_field(env->virt, VIRT_ONOFF) != enable) {
+ tlb_flush(env_cpu(env));
+ }
+
env->virt = set_field(env->virt, VIRT_ONOFF, enable);
}
--
2.25.0.265.gbab2e86ba0-goog
next prev parent reply other threads:[~2020-03-03 0:57 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-03 0:48 [PULL] RISC-V Patches for the 5.0 Soft Freeze, Part 3 Palmer Dabbelt
2020-03-03 0:48 ` [PULL 01/38] target/riscv: Convert MIP CSR to target_ulong Palmer Dabbelt
2020-03-03 0:48 ` [PULL 02/38] target/riscv: Add the Hypervisor extension Palmer Dabbelt
2020-03-03 0:48 ` [PULL 03/38] target/riscv: Add the Hypervisor CSRs to CPUState Palmer Dabbelt
2020-03-03 0:48 ` [PULL 04/38] target/riscv: Add support for the new execption numbers Palmer Dabbelt
2020-03-05 16:44 ` Peter Maydell
2020-03-05 16:46 ` Alistair Francis
2020-03-05 16:51 ` Palmer Dabbelt
2020-03-03 0:48 ` [PULL 05/38] target/riscv: Rename the H irqs to VS irqs Palmer Dabbelt
2020-03-03 0:48 ` [PULL 06/38] target/riscv: Add the virtulisation mode Palmer Dabbelt
2020-03-03 0:48 ` [PULL 07/38] target/riscv: Add the force HS exception mode Palmer Dabbelt
2020-03-03 0:48 ` [PULL 08/38] target/riscv: Fix CSR perm checking for HS mode Palmer Dabbelt
2020-03-03 0:48 ` [PULL 09/38] target/riscv: Print priv and virt in disas log Palmer Dabbelt
2020-03-03 0:48 ` [PULL 10/38] target/riscv: Dump Hypervisor registers if enabled Palmer Dabbelt
2020-03-03 0:48 ` [PULL 11/38] target/riscv: Add Hypervisor CSR access functions Palmer Dabbelt
2020-03-03 0:48 ` [PULL 12/38] target/riscv: Add Hypervisor virtual CSRs accesses Palmer Dabbelt
2020-03-03 0:48 ` [PULL 13/38] target/riscv: Add Hypervisor machine " Palmer Dabbelt
2020-03-03 0:48 ` [PULL 14/38] target/riscv: Add virtual register swapping function Palmer Dabbelt
2020-03-03 0:48 ` [PULL 15/38] target/riscv: Set VS bits in mideleg for Hyp extension Palmer Dabbelt
2020-03-03 0:48 ` [PULL 16/38] target/riscv: Extend the MIE CSR to support virtulisation Palmer Dabbelt
2020-03-03 0:48 ` [PULL 17/38] target/riscv: Extend the SIP " Palmer Dabbelt
2020-03-03 0:48 ` [PULL 18/38] target/riscv: Add support for virtual interrupt setting Palmer Dabbelt
2020-03-03 0:48 ` Palmer Dabbelt [this message]
2020-03-03 0:48 ` [PULL 20/38] target/riscv: Generate illegal instruction on WFI when V=1 Palmer Dabbelt
2020-03-03 0:48 ` [PULL 21/38] target/riscv: Add hypvervisor trap support Palmer Dabbelt
2020-03-03 0:48 ` [PULL 22/38] target/riscv: Add Hypervisor trap return support Palmer Dabbelt
2020-03-03 0:48 ` [PULL 23/38] target/riscv: Add hfence instructions Palmer Dabbelt
2020-03-03 0:48 ` [PULL 24/38] target/riscv: Remove the hret instruction Palmer Dabbelt
2020-03-03 0:48 ` [PULL 25/38] target/riscv: Only set TB flags with FP status if enabled Palmer Dabbelt
2020-03-03 0:48 ` [PULL 26/38] target/riscv: Disable guest FP support based on virtual status Palmer Dabbelt
2020-03-03 0:48 ` [PULL 27/38] target/riscv: Mark both sstatus and msstatus_hs as dirty Palmer Dabbelt
2020-03-03 0:48 ` [PULL 28/38] target/riscv: Respect MPRV and SPRV for floating point ops Palmer Dabbelt
2020-03-03 0:48 ` [PULL 29/38] target/riscv: Allow specifying MMU stage Palmer Dabbelt
2020-03-03 0:48 ` [PULL 30/38] target/riscv: Implement second stage MMU Palmer Dabbelt
2020-03-03 0:48 ` [PULL 31/38] target/riscv: Raise the new execptions when 2nd stage translation fails Palmer Dabbelt
2020-03-03 0:48 ` [PULL 32/38] target/riscv: Set htval and mtval2 on execptions Palmer Dabbelt
2020-03-03 0:48 ` [PULL 33/38] target/riscv: Add support for the 32-bit MSTATUSH CSR Palmer Dabbelt
2020-03-03 0:48 ` [PULL 34/38] target/riscv: Add the MSTATUS_MPV_ISSET helper macro Palmer Dabbelt
2020-03-03 0:48 ` [PULL 35/38] target/riscv: Allow enabling the Hypervisor extension Palmer Dabbelt
2020-03-03 0:48 ` [PULL 36/38] riscv: virt: Allow PCI address 0 Palmer Dabbelt
2020-03-03 0:48 ` [PULL 37/38] target/riscv: Emulate TIME CSRs for privileged mode Palmer Dabbelt
2020-03-03 0:48 ` [PULL 38/38] hw/riscv: Provide rdtime callback for TCG in CLINT emulation Palmer Dabbelt
2020-03-03 12:03 ` [PULL] RISC-V Patches for the 5.0 Soft Freeze, Part 3 Peter Maydell
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