The current calculation for VTTBR_BADDR_MASK masks only 39 bits and not all 40 bits. That last bit is important as some systems allocate from near the top of the available address space. This patch is necessary to run KVM on an aarch64 SOC I have been testing. Signed-off-by: Joel Schopp <joel.schopp@xxxxxxx> --- arch/arm64/include/asm/kvm_arm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index 3d69030..b39e93f 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -148,7 +148,7 @@ #endif #define VTTBR_BADDR_SHIFT (VTTBR_X - 1) -#define VTTBR_BADDR_MASK (((1LLU << (40 - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT) +#define VTTBR_BADDR_MASK (0xffffffffffLLU) /* bits 0-39 */ #define VTTBR_VMID_SHIFT (48LLU) #define VTTBR_VMID_MASK (0xffLLU << VTTBR_VMID_SHIFT) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
