[PATCH v3 08/35] x86/apic: Cleanup destination mode

David Woodhouse
2020-10-24T21:36:32Z

From: Thomas Gleixner <tglx@linutronix.de>

apic::irq_dest_mode is actually a boolean, but defined as u32 and named in
a way which does not explain what it means.

Make it a boolean and rename it to 'dest_mode_logical'

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
---
arch/x86/include/asm/apic.h | 2 +-
arch/x86/kernel/apic/apic.c | 2 +-
arch/x86/kernel/apic/apic_flat_64.c | 4 ++--
arch/x86/kernel/apic/apic_noop.c | 4 +---
arch/x86/kernel/apic/apic_numachip.c | 4 ++--
arch/x86/kernel/apic/bigsmp_32.c | 3 +--
arch/x86/kernel/apic/io_apic.c | 2 +-
arch/x86/kernel/apic/msi.c | 6 +++---
arch/x86/kernel/apic/probe_32.c | 3 +--
arch/x86/kernel/apic/x2apic_cluster.c | 2 +-
arch/x86/kernel/apic/x2apic_phys.c | 2 +-
arch/x86/kernel/apic/x2apic_uv_x.c | 2 +-
arch/x86/kernel/smpboot.c | 7 ++-----
arch/x86/platform/uv/uv_irq.c | 2 +-
arch/x86/xen/apic.c | 3 +--
drivers/iommu/amd/amd_iommu_types.h | 2 +-
drivers/iommu/amd/iommu.c | 8 ++++----
drivers/iommu/intel/irq_remapping.c | 2 +-
18 files changed, 26 insertions(+), 34 deletions(-)

diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index 019d7ac3b16e..652f62252349 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -309,7 +309,7 @@ struct apic {
u32 disable_esr;

enum apic_delivery_modes delivery_mode;
- u32 irq_dest_mode;
+ bool dest_mode_logical;

u32 (*calc_dest_apicid)(unsigned int cpu);

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 29d28b34cb2f..54f04355aaa2 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1591,7 +1591,7 @@ static void setup_local_APIC(void)
apic->init_apic_ldr();

#ifdef CONFIG_X86_32
- if (apic->irq_dest_mode == 1) {
+ if (apic->dest_mode_logical) {
int logical_apicid, ldr_apicid;

/*
diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c
index bbb1b89fe711..8f72b4351c9f 100644
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -114,7 +114,7 @@ static struct apic apic_flat __ro_after_init = {
.apic_id_registered = flat_apic_id_registered,

.delivery_mode = APIC_DELIVERY_MODE_FIXED,
- .irq_dest_mode = 1, /* logical */
+ .dest_mode_logical = true,

.disable_esr = 0,

@@ -205,7 +205,7 @@ static struct apic apic_physflat __ro_after_init = {
.apic_id_registered = flat_apic_id_registered,

.delivery_mode = APIC_DELIVERY_MODE_FIXED,
- .irq_dest_mode = 0, /* physical */
+ .dest_mode_logical = false,

.disable_esr = 0,

diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c
index 38f167ce5031..fe78319e0f7a 100644
--- a/arch/x86/kernel/apic/apic_noop.c
+++ b/arch/x86/kernel/apic/apic_noop.c
@@ -96,8 +96,7 @@ struct apic apic_noop __ro_after_init = {
.apic_id_registered = noop_apic_id_registered,

.delivery_mode = APIC_DELIVERY_MODE_FIXED,
- /* logical delivery broadcast to all CPUs: */
- .irq_dest_mode = 1,
+ .dest_mode_logical = true,

.disable_esr = 0,

@@ -105,7 +104,6 @@ struct apic apic_noop __ro_after_init = {
.init_apic_ldr = noop_init_apic_ldr,
.ioapic_phys_id_map = default_ioapic_phys_id_map,
.setup_apic_routing = NULL,
-
.cpu_present_to_apicid = default_cpu_present_to_apicid,
.apicid_to_cpu_present = physid_set_mask_of_physid,

diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c
index 4ebf9fe2c95d..a54d817eb4b6 100644
--- a/arch/x86/kernel/apic/apic_numachip.c
+++ b/arch/x86/kernel/apic/apic_numachip.c
@@ -247,7 +247,7 @@ static const struct apic apic_numachip1 __refconst = {
.apic_id_registered = numachip_apic_id_registered,

.delivery_mode = APIC_DELIVERY_MODE_FIXED,
- .irq_dest_mode = 0, /* physical */
+ .dest_mode_logical = false,

.disable_esr = 0,

@@ -294,7 +294,7 @@ static const struct apic apic_numachip2 __refconst = {
.apic_id_registered = numachip_apic_id_registered,

.delivery_mode = APIC_DELIVERY_MODE_FIXED,
- .irq_dest_mode = 0, /* physical */
+ .dest_mode_logical = false,

.disable_esr = 0,

diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c
index 64c375b8c54e..77555f66c14d 100644
--- a/arch/x86/kernel/apic/bigsmp_32.c
+++ b/arch/x86/kernel/apic/bigsmp_32.c
@@ -128,8 +128,7 @@ static struct apic apic_bigsmp __ro_after_init = {
.apic_id_registered = bigsmp_apic_id_registered,

.delivery_mode = APIC_DELIVERY_MODE_FIXED,
- /* phys delivery to target CPU: */
- .irq_dest_mode = 0,
+ .dest_mode_logical = false,

.disable_esr = 1,

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index cff6cbc3d183..c6d92d2570d0 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2950,7 +2950,7 @@ static void mp_setup_entry(struct irq_cfg *cfg, struct mp_chip_data *data,
{
memset(entry, 0, sizeof(*entry));
entry->delivery_mode = apic->delivery_mode;
- entry->dest_mode = apic->irq_dest_mode;
+ entry->dest_mode = apic->dest_mode_logical;
entry->dest = cfg->dest_apicid;
entry->vector = cfg->vector;
entry->trigger = data->trigger;
diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c
index 516df47bde73..46ffd41a4238 100644
--- a/arch/x86/kernel/apic/msi.c
+++ b/arch/x86/kernel/apic/msi.c
@@ -30,9 +30,9 @@ static void __irq_msi_compose_msg(struct irq_cfg *cfg, struct msi_msg *msg,

msg->address_lo =
MSI_ADDR_BASE_LO |
- ((apic->irq_dest_mode == 0) ?
- MSI_ADDR_DEST_MODE_PHYSICAL :
- MSI_ADDR_DEST_MODE_LOGICAL) |
+ (apic->dest_mode_logical ?
+ MSI_ADDR_DEST_MODE_LOGICAL :
+ MSI_ADDR_DEST_MODE_PHYSICAL) |
MSI_ADDR_REDIRECTION_CPU |
MSI_ADDR_DEST_ID(cfg->dest_apicid);

diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c
index 97652aacf3e1..a61f642b1b90 100644
--- a/arch/x86/kernel/apic/probe_32.c
+++ b/arch/x86/kernel/apic/probe_32.c
@@ -70,8 +70,7 @@ static struct apic apic_default __ro_after_init = {
.apic_id_registered = default_apic_id_registered,

.delivery_mode = APIC_DELIVERY_MODE_FIXED,
- /* logical delivery broadcast to all CPUs: */
- .irq_dest_mode = 1,
+ .dest_mode_logical = true,

.disable_esr = 0,

diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c
index 53390fc9f51e..df6adc5674c9 100644
--- a/arch/x86/kernel/apic/x2apic_cluster.c
+++ b/arch/x86/kernel/apic/x2apic_cluster.c
@@ -185,7 +185,7 @@ static struct apic apic_x2apic_cluster __ro_after_init = {
.apic_id_registered = x2apic_apic_id_registered,

.delivery_mode = APIC_DELIVERY_MODE_FIXED,
- .irq_dest_mode = 1, /* logical */
+ .dest_mode_logical = true,

.disable_esr = 0,

diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c
index ee0c4d08092c..0e4e81971567 100644
--- a/arch/x86/kernel/apic/x2apic_phys.c
+++ b/arch/x86/kernel/apic/x2apic_phys.c
@@ -158,7 +158,7 @@ static struct apic apic_x2apic_phys __ro_after_init = {
.apic_id_registered = x2apic_apic_id_registered,

.delivery_mode = APIC_DELIVERY_MODE_FIXED,
- .irq_dest_mode = 0, /* physical */
+ .dest_mode_logical = false,

.disable_esr = 0,

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index d21a6853afee..de94181f4d0c 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -808,7 +808,7 @@ static struct apic apic_x2apic_uv_x __ro_after_init = {
.apic_id_registered = uv_apic_id_registered,

.delivery_mode = APIC_DELIVERY_MODE_FIXED,
- .irq_dest_mode = 0, /* Physical */
+ .dest_mode_logical = false,

.disable_esr = 0,

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 6c14f1091f60..d133d6580f41 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -747,7 +747,7 @@ static void __init smp_quirk_init_udelay(void)
int
wakeup_secondary_cpu_via_nmi(int apicid, unsigned long start_eip)
{
- u32 dm = apic->irq_dest_mode ? APIC_DEST_LOGICAL : APIC_DEST_PHYSICAL;
+ u32 dm = apic->dest_mode_logical ? APIC_DEST_LOGICAL : APIC_DEST_PHYSICAL;
unsigned long send_status, accept_status = 0;
int maxlvt;

@@ -981,10 +981,7 @@ wakeup_cpu_via_init_nmi(int cpu, unsigned long start_ip, int apicid,
if (!boot_error) {
enable_start_cpu0 = 1;
*cpu0_nmi_registered = 1;
- if (apic->irq_dest_mode)
- id = cpu0_logical_apicid;
- else
- id = apicid;
+ id = apic->dest_mode_logical ? cpu0_logical_apicid : apicid;
boot_error = wakeup_secondary_cpu_via_nmi(id, start_ip);
}

diff --git a/arch/x86/platform/uv/uv_irq.c b/arch/x86/platform/uv/uv_irq.c
index e7020d162949..1a536a187d74 100644
--- a/arch/x86/platform/uv/uv_irq.c
+++ b/arch/x86/platform/uv/uv_irq.c
@@ -36,7 +36,7 @@ static void uv_program_mmr(struct irq_cfg *cfg, struct uv_irq_2_mmr_pnode *info)
entry = (struct uv_IO_APIC_route_entry *)&mmr_value;
entry->vector = cfg->vector;
entry->delivery_mode = apic->delivery_mode;
- entry->dest_mode = apic->irq_dest_mode;
+ entry->dest_mode = apic->dest_mode_logical;
entry->polarity = 0;
entry->trigger = 0;
entry->mask = 0;
diff --git a/arch/x86/xen/apic.c b/arch/x86/xen/apic.c
index c35c24b5bc01..0d46cc283cf5 100644
--- a/arch/x86/xen/apic.c
+++ b/arch/x86/xen/apic.c
@@ -148,8 +148,7 @@ static struct apic xen_pv_apic = {
.apic_id_valid = xen_id_always_valid,
.apic_id_registered = xen_id_always_registered,

- /* .irq_delivery_mode - used in native_compose_msi_msg only */
- /* .irq_dest_mode - used in native_compose_msi_msg only */
+ /* .delivery_mode and .dest_mode_logical not used by XENPV */

.disable_esr = 0,

diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h
index f696ac7c5f89..ba74a722a400 100644
--- a/drivers/iommu/amd/amd_iommu_types.h
+++ b/drivers/iommu/amd/amd_iommu_types.h
@@ -893,7 +893,7 @@ struct amd_ir_data {
};

struct amd_irte_ops {
- void (*prepare)(void *, u32, u32, u8, u32, int);
+ void (*prepare)(void *, u32, bool, u8, u32, int);
void (*activate)(void *, u16, u16);
void (*deactivate)(void *, u16, u16);
void (*set_affinity)(void *, u16, u16, u8, u32);
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index bc81b91f89fe..d7f0c8908602 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -3466,7 +3466,7 @@ static void free_irte(u16 devid, int index)
}

static void irte_prepare(void *entry,
- u32 delivery_mode, u32 dest_mode,
+ u32 delivery_mode, bool dest_mode,
u8 vector, u32 dest_apicid, int devid)
{
union irte *irte = (union irte *) entry;
@@ -3480,7 +3480,7 @@ static void irte_prepare(void *entry,
}

static void irte_ga_prepare(void *entry,
- u32 delivery_mode, u32 dest_mode,
+ u32 delivery_mode, bool dest_mode,
u8 vector, u32 dest_apicid, int devid)
{
struct irte_ga *irte = (struct irte_ga *) entry;
@@ -3672,7 +3672,7 @@ static void irq_remapping_prepare_irte(struct amd_ir_data *data,
data->irq_2_irte.devid = devid;
data->irq_2_irte.index = index + sub_handle;
iommu->irte_ops->prepare(data->entry, apic->delivery_mode,
- apic->irq_dest_mode, irq_cfg->vector,
+ apic->dest_mode_logical, irq_cfg->vector,
irq_cfg->dest_apicid, devid);

switch (info->type) {
@@ -3943,7 +3943,7 @@ int amd_iommu_deactivate_guest_mode(void *data)
entry->hi.val = 0;

entry->lo.fields_remap.valid = valid;
- entry->lo.fields_remap.dm = apic->irq_dest_mode;
+ entry->lo.fields_remap.dm = apic->dest_mode_logical;
entry->lo.fields_remap.int_type = apic->delivery_mode;
entry->hi.fields.vector = cfg->vector;
entry->lo.fields_remap.destination =
diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c
index d44e719d1984..5628d43b795e 100644
--- a/drivers/iommu/intel/irq_remapping.c
+++ b/drivers/iommu/intel/irq_remapping.c
@@ -1113,7 +1113,7 @@ static void prepare_irte(struct irte *irte, int vector, unsigned int dest)
memset(irte, 0, sizeof(*irte));

irte->present = 1;
- irte->dst_mode = apic->irq_dest_mode;
+ irte->dst_mode = apic->dest_mode_logical;
/*
* Trigger mode in the IRTE will always be edge, and for IO-APIC, the
* actual level or edge trigger will be setup in the IO-APIC