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authorXing Li <lixing@loongson.cn>2020-05-23 09:56:29 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2020-06-04 19:48:41 +0200
commit5816c76dea116a458f1932eefe064e35403248eb (patch)
tree48da324adbe74d2ae50542dab85ed865e14faac4 /arch/mips
parentKVM: MIPS: Define KVM_ENTRYHI_ASID to cpu_asid_mask(&boot_cpu_data) (diff)
downloadlinux-5816c76dea116a458f1932eefe064e35403248eb.tar.xz
linux-5816c76dea116a458f1932eefe064e35403248eb.zip
KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vmbits
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: Stable <stable@vger.kernel.org> Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com> Signed-off-by: Xing Li <lixing@loongson.cn> [Huacai: Improve commit messages] Signed-off-by: Huacai Chen <chenhc@lemote.com> Message-Id: <1590220602-3547-3-git-send-email-chenhc@lemote.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/include/asm/kvm_host.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index 609fdcd5b24e..31c84d86c8f6 100644
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -276,7 +276,11 @@ 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)