Merge tag 'kvmarm-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 updates for 6.7

 - Generalized infrastructure for 'writable' ID registers, effectively
   allowing userspace to opt-out of certain vCPU features for its guest

 - Optimization for vSGI injection, opportunistically compressing MPIDR
   to vCPU mapping into a table

 - Improvements to KVM's PMU emulation, allowing userspace to select
   the number of PMCs available to a VM

 - Guest support for memory operation instructions (FEAT_MOPS)

 - Cleanups to handling feature flags in KVM_ARM_VCPU_INIT, squashing
   bugs and getting rid of useless code

 - Changes to the way the SMCCC filter is constructed, avoiding wasted
   memory allocations when not in use

 - Load the stage-2 MMU context at vcpu_load() for VHE systems, reducing
   the overhead of errata mitigations

 - Miscellaneous kernel and selftest fixes

1 files changed, 1 insertions, 47 deletions

diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c
index 8b70759cdbb9..ede65a20e7dc 100644
--- a/arch/arm64/kernel/traps.c
+++ b/arch/arm64/kernel/traps.c
@@ -516,53 +516,7 @@ void do_el1_fpac(struct pt_regs *regs, unsigned long esr)
 
 void do_el0_mops(struct pt_regs *regs, unsigned long esr)
 {
-	bool wrong_option = esr & ESR_ELx_MOPS_ISS_WRONG_OPTION;
-	bool option_a = esr & ESR_ELx_MOPS_ISS_OPTION_A;
-	int dstreg = ESR_ELx_MOPS_ISS_DESTREG(esr);
-	int srcreg = ESR_ELx_MOPS_ISS_SRCREG(esr);
-	int sizereg = ESR_ELx_MOPS_ISS_SIZEREG(esr);
-	unsigned long dst, src, size;
-
-	dst = pt_regs_read_reg(regs, dstreg);
-	src = pt_regs_read_reg(regs, srcreg);
-	size = pt_regs_read_reg(regs, sizereg);
-
-	/*
-	 * Put the registers back in the original format suitable for a
-	 * prologue instruction, using the generic return routine from the
-	 * Arm ARM (DDI 0487I.a) rules CNTMJ and MWFQH.
-	 */
-	if (esr & ESR_ELx_MOPS_ISS_MEM_INST) {
-		/* SET* instruction */
-		if (option_a ^ wrong_option) {
-			/* Format is from Option A; forward set */
-			pt_regs_write_reg(regs, dstreg, dst + size);
-			pt_regs_write_reg(regs, sizereg, -size);
-		}
-	} else {
-		/* CPY* instruction */
-		if (!(option_a ^ wrong_option)) {
-			/* Format is from Option B */
-			if (regs->pstate & PSR_N_BIT) {
-				/* Backward copy */
-				pt_regs_write_reg(regs, dstreg, dst - size);
-				pt_regs_write_reg(regs, srcreg, src - size);
-			}
-		} else {
-			/* Format is from Option A */
-			if (size & BIT(63)) {
-				/* Forward copy */
-				pt_regs_write_reg(regs, dstreg, dst + size);
-				pt_regs_write_reg(regs, srcreg, src + size);
-				pt_regs_write_reg(regs, sizereg, -size);
-			}
-		}
-	}
-
-	if (esr & ESR_ELx_MOPS_ISS_FROM_EPILOGUE)
-		regs->pc -= 8;
-	else
-		regs->pc -= 4;
+	arm64_mops_reset_regs(&regs->user_regs, esr);
 
 	/*
 	 * If single stepping then finish the step before executing the