diff mbox series

[v2,2/7] KVM: arm64: clean up redundant 'kvm_run' parameters

Message ID 20200422125810.34847-3-tianjia.zhang@linux.alibaba.com
State Superseded
Headers show
Series clean up redundant 'kvm_run' parameters | expand

Commit Message

Tianjia Zhang April 22, 2020, 12:58 p.m. UTC
In the current kvm version, 'kvm_run' has been included in the 'kvm_vcpu'
structure. Earlier than historical reasons, many kvm-related function
parameters retain the 'kvm_run' and 'kvm_vcpu' parameters at the same time.
This patch does a unified cleanup of these remaining redundant parameters.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
---
 arch/arm64/include/asm/kvm_coproc.h | 12 +++++-----
 arch/arm64/include/asm/kvm_host.h   | 11 ++++-----
 arch/arm64/include/asm/kvm_mmu.h    |  2 +-
 arch/arm64/kvm/handle_exit.c        | 36 ++++++++++++++---------------
 arch/arm64/kvm/sys_regs.c           | 13 +++++------
 virt/kvm/arm/arm.c                  |  6 ++---
 virt/kvm/arm/mmio.c                 | 11 +++++----
 virt/kvm/arm/mmu.c                  |  5 ++--
 8 files changed, 46 insertions(+), 50 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm64/include/asm/kvm_coproc.h b/arch/arm64/include/asm/kvm_coproc.h
index 0185ee8b8b5e..454373704b8a 100644
--- a/arch/arm64/include/asm/kvm_coproc.h
+++ b/arch/arm64/include/asm/kvm_coproc.h
@@ -27,12 +27,12 @@  struct kvm_sys_reg_target_table {
 void kvm_register_target_sys_reg_table(unsigned int target,
 				       struct kvm_sys_reg_target_table *table);
 
-int kvm_handle_cp14_load_store(struct kvm_vcpu *vcpu, struct kvm_run *run);
-int kvm_handle_cp14_32(struct kvm_vcpu *vcpu, struct kvm_run *run);
-int kvm_handle_cp14_64(struct kvm_vcpu *vcpu, struct kvm_run *run);
-int kvm_handle_cp15_32(struct kvm_vcpu *vcpu, struct kvm_run *run);
-int kvm_handle_cp15_64(struct kvm_vcpu *vcpu, struct kvm_run *run);
-int kvm_handle_sys_reg(struct kvm_vcpu *vcpu, struct kvm_run *run);
+int kvm_handle_cp14_load_store(struct kvm_vcpu *vcpu);
+int kvm_handle_cp14_32(struct kvm_vcpu *vcpu);
+int kvm_handle_cp14_64(struct kvm_vcpu *vcpu);
+int kvm_handle_cp15_32(struct kvm_vcpu *vcpu);
+int kvm_handle_cp15_64(struct kvm_vcpu *vcpu);
+int kvm_handle_sys_reg(struct kvm_vcpu *vcpu);
 
 #define kvm_coproc_table_init kvm_sys_reg_table_init
 void kvm_sys_reg_table_init(void);
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 32c8a675e5a4..3fab32e4948c 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -481,18 +481,15 @@  u64 __kvm_call_hyp(void *hypfn, ...);
 void force_vm_exit(const cpumask_t *mask);
 void kvm_mmu_wp_memory_region(struct kvm *kvm, int slot);
 
-int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run,
-		int exception_index);
-void handle_exit_early(struct kvm_vcpu *vcpu, struct kvm_run *run,
-		       int exception_index);
+int handle_exit(struct kvm_vcpu *vcpu, int exception_index);
+void handle_exit_early(struct kvm_vcpu *vcpu, int exception_index);
 
 /* MMIO helpers */
 void kvm_mmio_write_buf(void *buf, unsigned int len, unsigned long data);
 unsigned long kvm_mmio_read_buf(const void *buf, unsigned int len);
 
-int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run);
-int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
-		 phys_addr_t fault_ipa);
+int kvm_handle_mmio_return(struct kvm_vcpu *vcpu);
+int io_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa);
 
 int kvm_perf_init(void);
 int kvm_perf_teardown(void);
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h
index 30b0e8d6b895..2ec7b9bb25d3 100644
--- a/arch/arm64/include/asm/kvm_mmu.h
+++ b/arch/arm64/include/asm/kvm_mmu.h
@@ -159,7 +159,7 @@  void kvm_free_stage2_pgd(struct kvm *kvm);
 int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
 			  phys_addr_t pa, unsigned long size, bool writable);
 
-int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run);
+int kvm_handle_guest_abort(struct kvm_vcpu *vcpu);
 
 void kvm_mmu_free_memory_caches(struct kvm_vcpu *vcpu);
 
diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c
index aacfc55de44c..ec3a66642ea5 100644
--- a/arch/arm64/kvm/handle_exit.c
+++ b/arch/arm64/kvm/handle_exit.c
@@ -25,7 +25,7 @@ 
 #define CREATE_TRACE_POINTS
 #include "trace.h"
 
-typedef int (*exit_handle_fn)(struct kvm_vcpu *, struct kvm_run *);
+typedef int (*exit_handle_fn)(struct kvm_vcpu *);
 
 static void kvm_handle_guest_serror(struct kvm_vcpu *vcpu, u32 esr)
 {
@@ -33,7 +33,7 @@  static void kvm_handle_guest_serror(struct kvm_vcpu *vcpu, u32 esr)
 		kvm_inject_vabt(vcpu);
 }
 
-static int handle_hvc(struct kvm_vcpu *vcpu, struct kvm_run *run)
+static int handle_hvc(struct kvm_vcpu *vcpu)
 {
 	int ret;
 
@@ -50,7 +50,7 @@  static int handle_hvc(struct kvm_vcpu *vcpu, struct kvm_run *run)
 	return ret;
 }
 
-static int handle_smc(struct kvm_vcpu *vcpu, struct kvm_run *run)
+static int handle_smc(struct kvm_vcpu *vcpu)
 {
 	/*
 	 * "If an SMC instruction executed at Non-secure EL1 is
@@ -69,7 +69,7 @@  static int handle_smc(struct kvm_vcpu *vcpu, struct kvm_run *run)
  * Guest access to FP/ASIMD registers are routed to this handler only
  * when the system doesn't support FP/ASIMD.
  */
-static int handle_no_fpsimd(struct kvm_vcpu *vcpu, struct kvm_run *run)
+static int handle_no_fpsimd(struct kvm_vcpu *vcpu)
 {
 	kvm_inject_undefined(vcpu);
 	return 1;
@@ -87,7 +87,7 @@  static int handle_no_fpsimd(struct kvm_vcpu *vcpu, struct kvm_run *run)
  * world-switches and schedule other host processes until there is an
  * incoming IRQ or FIQ to the VM.
  */
-static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run)
+static int kvm_handle_wfx(struct kvm_vcpu *vcpu)
 {
 	if (kvm_vcpu_get_hsr(vcpu) & ESR_ELx_WFx_ISS_WFE) {
 		trace_kvm_wfx_arm64(*vcpu_pc(vcpu), true);
@@ -109,16 +109,16 @@  static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run)
  * kvm_handle_guest_debug - handle a debug exception instruction
  *
  * @vcpu:	the vcpu pointer
- * @run:	access to the kvm_run structure for results
  *
  * We route all debug exceptions through the same handler. If both the
  * guest and host are using the same debug facilities it will be up to
  * userspace to re-inject the correct exception for guest delivery.
  *
- * @return: 0 (while setting run->exit_reason), -1 for error
+ * @return: 0 (while setting vcpu->run->exit_reason), -1 for error
  */
-static int kvm_handle_guest_debug(struct kvm_vcpu *vcpu, struct kvm_run *run)
+static int kvm_handle_guest_debug(struct kvm_vcpu *vcpu)
 {
+	struct kvm_run *run = vcpu->run;
 	u32 hsr = kvm_vcpu_get_hsr(vcpu);
 	int ret = 0;
 
@@ -144,7 +144,7 @@  static int kvm_handle_guest_debug(struct kvm_vcpu *vcpu, struct kvm_run *run)
 	return ret;
 }
 
-static int kvm_handle_unknown_ec(struct kvm_vcpu *vcpu, struct kvm_run *run)
+static int kvm_handle_unknown_ec(struct kvm_vcpu *vcpu)
 {
 	u32 hsr = kvm_vcpu_get_hsr(vcpu);
 
@@ -155,7 +155,7 @@  static int kvm_handle_unknown_ec(struct kvm_vcpu *vcpu, struct kvm_run *run)
 	return 1;
 }
 
-static int handle_sve(struct kvm_vcpu *vcpu, struct kvm_run *run)
+static int handle_sve(struct kvm_vcpu *vcpu)
 {
 	/* Until SVE is supported for guests: */
 	kvm_inject_undefined(vcpu);
@@ -193,7 +193,7 @@  void kvm_arm_vcpu_ptrauth_trap(struct kvm_vcpu *vcpu)
  * Guest usage of a ptrauth instruction (which the guest EL1 did not turn into
  * a NOP).
  */
-static int kvm_handle_ptrauth(struct kvm_vcpu *vcpu, struct kvm_run *run)
+static int kvm_handle_ptrauth(struct kvm_vcpu *vcpu)
 {
 	kvm_arm_vcpu_ptrauth_trap(vcpu);
 	return 1;
@@ -238,7 +238,7 @@  static exit_handle_fn kvm_get_exit_handler(struct kvm_vcpu *vcpu)
  * KVM_EXIT_DEBUG, otherwise userspace needs to complete its
  * emulation first.
  */
-static int handle_trap_exceptions(struct kvm_vcpu *vcpu, struct kvm_run *run)
+static int handle_trap_exceptions(struct kvm_vcpu *vcpu)
 {
 	int handled;
 
@@ -253,7 +253,7 @@  static int handle_trap_exceptions(struct kvm_vcpu *vcpu, struct kvm_run *run)
 		exit_handle_fn exit_handler;
 
 		exit_handler = kvm_get_exit_handler(vcpu);
-		handled = exit_handler(vcpu, run);
+		handled = exit_handler(vcpu);
 	}
 
 	return handled;
@@ -263,9 +263,10 @@  static int handle_trap_exceptions(struct kvm_vcpu *vcpu, struct kvm_run *run)
  * Return > 0 to return to guest, < 0 on error, 0 (and set exit_reason) on
  * proper exit to userspace.
  */
-int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run,
-		       int exception_index)
+int handle_exit(struct kvm_vcpu *vcpu, int exception_index)
 {
+	struct kvm_run *run = vcpu->run;
+
 	if (ARM_SERROR_PENDING(exception_index)) {
 		u8 hsr_ec = ESR_ELx_EC(kvm_vcpu_get_hsr(vcpu));
 
@@ -291,7 +292,7 @@  int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run,
 	case ARM_EXCEPTION_EL1_SERROR:
 		return 1;
 	case ARM_EXCEPTION_TRAP:
-		return handle_trap_exceptions(vcpu, run);
+		return handle_trap_exceptions(vcpu);
 	case ARM_EXCEPTION_HYP_GONE:
 		/*
 		 * EL2 has been reset to the hyp-stub. This happens when a guest
@@ -315,8 +316,7 @@  int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run,
 }
 
 /* For exit types that need handling before we can be preempted */
-void handle_exit_early(struct kvm_vcpu *vcpu, struct kvm_run *run,
-		       int exception_index)
+void handle_exit_early(struct kvm_vcpu *vcpu, int exception_index)
 {
 	if (ARM_SERROR_PENDING(exception_index)) {
 		if (this_cpu_has_cap(ARM64_HAS_RAS_EXTN)) {
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 51db934702b6..e5a0d0d676c8 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2116,7 +2116,7 @@  static const struct sys_reg_desc *find_reg(const struct sys_reg_params *params,
 	return bsearch((void *)pval, table, num, sizeof(table[0]), match_sys_reg);
 }
 
-int kvm_handle_cp14_load_store(struct kvm_vcpu *vcpu, struct kvm_run *run)
+int kvm_handle_cp14_load_store(struct kvm_vcpu *vcpu)
 {
 	kvm_inject_undefined(vcpu);
 	return 1;
@@ -2295,7 +2295,7 @@  static int kvm_handle_cp_32(struct kvm_vcpu *vcpu,
 	return 1;
 }
 
-int kvm_handle_cp15_64(struct kvm_vcpu *vcpu, struct kvm_run *run)
+int kvm_handle_cp15_64(struct kvm_vcpu *vcpu)
 {
 	const struct sys_reg_desc *target_specific;
 	size_t num;
@@ -2306,7 +2306,7 @@  int kvm_handle_cp15_64(struct kvm_vcpu *vcpu, struct kvm_run *run)
 				target_specific, num);
 }
 
-int kvm_handle_cp15_32(struct kvm_vcpu *vcpu, struct kvm_run *run)
+int kvm_handle_cp15_32(struct kvm_vcpu *vcpu)
 {
 	const struct sys_reg_desc *target_specific;
 	size_t num;
@@ -2317,14 +2317,14 @@  int kvm_handle_cp15_32(struct kvm_vcpu *vcpu, struct kvm_run *run)
 				target_specific, num);
 }
 
-int kvm_handle_cp14_64(struct kvm_vcpu *vcpu, struct kvm_run *run)
+int kvm_handle_cp14_64(struct kvm_vcpu *vcpu)
 {
 	return kvm_handle_cp_64(vcpu,
 				cp14_64_regs, ARRAY_SIZE(cp14_64_regs),
 				NULL, 0);
 }
 
-int kvm_handle_cp14_32(struct kvm_vcpu *vcpu, struct kvm_run *run)
+int kvm_handle_cp14_32(struct kvm_vcpu *vcpu)
 {
 	return kvm_handle_cp_32(vcpu,
 				cp14_regs, ARRAY_SIZE(cp14_regs),
@@ -2382,9 +2382,8 @@  static void reset_sys_reg_descs(struct kvm_vcpu *vcpu,
 /**
  * kvm_handle_sys_reg -- handles a mrs/msr trap on a guest sys_reg access
  * @vcpu: The VCPU pointer
- * @run:  The kvm_run struct
  */
-int kvm_handle_sys_reg(struct kvm_vcpu *vcpu, struct kvm_run *run)
+int kvm_handle_sys_reg(struct kvm_vcpu *vcpu)
 {
 	struct sys_reg_params params;
 	unsigned long esr = kvm_vcpu_get_hsr(vcpu);
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index f5390ac2165b..dbeb20804a75 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -659,7 +659,7 @@  int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
 		return ret;
 
 	if (run->exit_reason == KVM_EXIT_MMIO) {
-		ret = kvm_handle_mmio_return(vcpu, run);
+		ret = kvm_handle_mmio_return(vcpu);
 		if (ret)
 			return ret;
 	}
@@ -811,11 +811,11 @@  int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
 		trace_kvm_exit(ret, kvm_vcpu_trap_get_class(vcpu), *vcpu_pc(vcpu));
 
 		/* Exit types that need handling before we can be preempted */
-		handle_exit_early(vcpu, run, ret);
+		handle_exit_early(vcpu, ret);
 
 		preempt_enable();
 
-		ret = handle_exit(vcpu, run, ret);
+		ret = handle_exit(vcpu, ret);
 	}
 
 	/* Tell userspace about in-kernel device output levels */
diff --git a/virt/kvm/arm/mmio.c b/virt/kvm/arm/mmio.c
index aedfcff99ac5..41ef5c5dbc62 100644
--- a/virt/kvm/arm/mmio.c
+++ b/virt/kvm/arm/mmio.c
@@ -77,9 +77,8 @@  unsigned long kvm_mmio_read_buf(const void *buf, unsigned int len)
  *			     or in-kernel IO emulation
  *
  * @vcpu: The VCPU pointer
- * @run:  The VCPU run struct containing the mmio data
  */
-int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run)
+int kvm_handle_mmio_return(struct kvm_vcpu *vcpu)
 {
 	unsigned long data;
 	unsigned int len;
@@ -92,6 +91,8 @@  int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run)
 	vcpu->mmio_needed = 0;
 
 	if (!kvm_vcpu_dabt_iswrite(vcpu)) {
+		struct kvm_run *run = vcpu->run;
+
 		len = kvm_vcpu_dabt_get_as(vcpu);
 		data = kvm_mmio_read_buf(run->mmio.data, len);
 
@@ -119,9 +120,9 @@  int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run)
 	return 0;
 }
 
-int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
-		 phys_addr_t fault_ipa)
+int io_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa)
 {
+	struct kvm_run *run = vcpu->run;
 	unsigned long data;
 	unsigned long rt;
 	int ret;
@@ -188,7 +189,7 @@  int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
 		if (!is_write)
 			memcpy(run->mmio.data, data_buf, len);
 		vcpu->stat.mmio_exit_kernel++;
-		kvm_handle_mmio_return(vcpu, run);
+		kvm_handle_mmio_return(vcpu);
 		return 1;
 	}
 
diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
index e3b9ee268823..c5dc58226b5b 100644
--- a/virt/kvm/arm/mmu.c
+++ b/virt/kvm/arm/mmu.c
@@ -1892,7 +1892,6 @@  static void handle_access_fault(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa)
 /**
  * kvm_handle_guest_abort - handles all 2nd stage aborts
  * @vcpu:	the VCPU pointer
- * @run:	the kvm_run structure
  *
  * Any abort that gets to the host is almost guaranteed to be caused by a
  * missing second stage translation table entry, which can mean that either the
@@ -1901,7 +1900,7 @@  static void handle_access_fault(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa)
  * space. The distinction is based on the IPA causing the fault and whether this
  * memory region has been registered as standard RAM by user space.
  */
-int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run)
+int kvm_handle_guest_abort(struct kvm_vcpu *vcpu)
 {
 	unsigned long fault_status;
 	phys_addr_t fault_ipa;
@@ -1980,7 +1979,7 @@  int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run)
 		 * of the page size.
 		 */
 		fault_ipa |= kvm_vcpu_get_hfar(vcpu) & ((1 << 12) - 1);
-		ret = io_mem_abort(vcpu, run, fault_ipa);
+		ret = io_mem_abort(vcpu, fault_ipa);
 		goto out_unlock;
 	}