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[PATCH V3 02/14] KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vm
From: |
Huacai Chen |
Subject: |
[PATCH V3 02/14] KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vmbits |
Date: |
Sun, 3 May 2020 18:05:55 +0800 |
From: Xing Li <address@hidden>
If a CPU support more than 32bit vmbits (which is true for 64bit CPUs),
VPN2_MASK set to fixed 0xffffe000 will lead to a wrong EntryHi in some
functions such as _kvm_mips_host_tlb_inv().
The cpu_vmbits definition of 32bit CPU in cpu-features.h is 31, so we
still use the old definition.
Cc: address@hidden
Signed-off-by: Xing Li <address@hidden>
[Huacai: Improve commit messages]
Signed-off-by: Huacai Chen <address@hidden>
---
arch/mips/include/asm/kvm_host.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index a01cee9..caa2b936 100644
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -274,7 +274,11 @@ enum emulation_result {
#define MIPS3_PG_SHIFT 6
#define MIPS3_PG_FRAME 0x3fffffc0
+#if defined(CONFIG_64BIT)
+#define VPN2_MASK GENMASK(cpu_vmbits - 1, 13)
+#else
#define VPN2_MASK 0xffffe000
+#endif
#define KVM_ENTRYHI_ASID cpu_asid_mask(&boot_cpu_data)
#define TLB_IS_GLOBAL(x) ((x).tlb_lo[0] & (x).tlb_lo[1] & ENTRYLO_G)
#define TLB_VPN2(x) ((x).tlb_hi & VPN2_MASK)
--
2.7.0
- [PATCH V3 00/14] KVM: MIPS: Add Loongson-3 support (Host Side), Huacai Chen, 2020/05/03
- [PATCH V3 01/14] KVM: MIPS: Define KVM_ENTRYHI_ASID to cpu_asid_mask(&boot_cpu_data), Huacai Chen, 2020/05/03
- [PATCH V3 02/14] KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vmbits,
Huacai Chen <=
- [PATCH V3 03/14] KVM: MIPS: Increase KVM_MAX_VCPUS and KVM_USER_MEM_SLOTS to 16, Huacai Chen, 2020/05/03
- [PATCH V3 04/14] KVM: MIPS: Add EVENTFD support which is needed by VHOST, Huacai Chen, 2020/05/03
- [PATCH V3 05/14] KVM: MIPS: Use lddir/ldpte instructions to lookup gpa_mm.pgd, Huacai Chen, 2020/05/03
- [PATCH V3 06/14] KVM: MIPS: Introduce and use cpu_guest_has_ldpte, Huacai Chen, 2020/05/03