From: Xing Li <[email protected]> commit 5816c76dea116a458f1932eefe064e35403248eb upstream.
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 <[email protected]> Reviewed-by: Aleksandar Markovic <[email protected]> Signed-off-by: Xing Li <[email protected]> [Huacai: Improve commit messages] Signed-off-by: Huacai Chen <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- arch/mips/include/asm/kvm_host.h | 4 ++++ 1 file changed, 4 insertions(+) --- 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)
