From: Huacai Chen <chenhc@lemote.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: kvm@vger.kernel.org, linux-mips@vger.kernel.org,
Fuxin Zhang <zhangfx@lemote.com>,
Huacai Chen <chenhuacai@gmail.com>,
Jiaxun Yang <jiaxun.yang@flygoat.com>,
Huacai Chen <chenhc@lemote.com>
Subject: [PATCH V2 08/14] KVM: MIPS: Let indexed cacheops cause guest exit on Loongson-3
Date: Fri, 24 Apr 2020 19:15:27 +0800 [thread overview]
Message-ID: <1587726933-31757-9-git-send-email-chenhc@lemote.com> (raw)
In-Reply-To: <1587726933-31757-1-git-send-email-chenhc@lemote.com>
Loongson-3's indexed cache operations need a node-id in the address,
but in KVM guest the node-id may be incorrect. So, let indexed cache
operations cause guest exit on Loongson-3.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Co-developed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
arch/mips/kvm/vz.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c
index f9fbbc16..ab320f0 100644
--- a/arch/mips/kvm/vz.c
+++ b/arch/mips/kvm/vz.c
@@ -2853,8 +2853,12 @@ static int kvm_vz_hardware_enable(void)
write_c0_guestctl0(MIPS_GCTL0_CP0 |
(MIPS_GCTL0_AT_GUEST << MIPS_GCTL0_AT_SHIFT) |
MIPS_GCTL0_CG | MIPS_GCTL0_CF);
- if (cpu_has_guestctl0ext)
- set_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+ if (cpu_has_guestctl0ext) {
+ if (current_cpu_type() != CPU_LOONGSON64)
+ set_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+ else
+ clear_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+ }
if (cpu_has_guestid) {
write_c0_guestctl1(0);
--
2.7.0
next prev parent reply other threads:[~2020-04-24 11:12 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-24 11:15 [PATCH V2 00/14] KVM: MIPS: Add Loongson-3 support (Host Side) Huacai Chen
2020-04-24 11:15 ` [PATCH V2 01/14] KVM: MIPS: Define KVM_ENTRYHI_ASID to cpu_asid_mask(&boot_cpu_data) Huacai Chen
2020-04-26 15:03 ` Sasha Levin
2020-04-27 3:42 ` Huacai Chen
2020-04-24 11:15 ` [PATCH V2 02/14] KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vmbits Huacai Chen
2020-04-24 11:15 ` [PATCH V2 03/14] KVM: MIPS: Increase KVM_MAX_VCPUS and KVM_USER_MEM_SLOTS to 16 Huacai Chen
2020-04-24 11:15 ` [PATCH V2 04/14] KVM: MIPS: Add EVENTFD support which is needed by VHOST Huacai Chen
2020-04-24 11:15 ` [PATCH V2 05/14] KVM: MIPS: Use lddir/ldpte instructions to lookup gpa_mm.pgd Huacai Chen
2020-04-24 11:15 ` [PATCH V2 06/14] KVM: MIPS: Introduce and use cpu_guest_has_ldpte Huacai Chen
2020-04-24 11:15 ` [PATCH V2 07/14] KVM: MIPS: Use root tlb to control guest's CCA for Loongson-3 Huacai Chen
2020-04-24 11:15 ` Huacai Chen [this message]
2020-04-24 11:15 ` [PATCH V2 09/14] KVM: MIPS: Add more types of virtual interrupts Huacai Chen
2020-04-29 10:19 ` Philippe Mathieu-Daudé
2020-04-29 10:34 ` Huacai Chen
2020-04-24 11:15 ` [PATCH V2 10/14] KVM: MIPS: Add Loongson-3 Virtual IPI interrupt support Huacai Chen
2020-04-24 11:15 ` [PATCH V2 11/14] KVM: MIPS: Add CPUCFG emulation for Loongson-3 Huacai Chen
2020-04-24 11:15 ` [PATCH V2 12/14] KVM: MIPS: Add CONFIG6 and DIAG registers emulation Huacai Chen
2020-04-24 11:15 ` [PATCH V2 13/14] KVM: MIPS: Add more MMIO load/store instructions emulation Huacai Chen
2020-04-24 11:15 ` [PATCH V2 14/14] KVM: MIPS: Enable KVM support for Loongson-3 Huacai Chen
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