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Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next

Browse Source 
This merges in a fix which touches both PPC and KVM code,
which was therefore put into a topic branch in the powerpc
tree.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Paul Mackerras 2017-02-08 19:35:34 +11:00
commit a4a741a048
8 changed files with 55 additions and 87 deletions
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8
arch/powerpc/include/asm/exception-64s.h
View File

@ -236,6 +236,11 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
mtctr reg; \
bctr
#define BRANCH_LINK_TO_FAR(reg, label) \
__LOAD_FAR_HANDLER(reg, label); \
mtctr reg; \
bctrl
/*
* KVM requires __LOAD_FAR_HANDLER.
*
@ -260,6 +265,9 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define BRANCH_TO_COMMON(reg, label) \
b label
#define BRANCH_LINK_TO_FAR(reg, label) \
bl label
#define BRANCH_TO_KVM(reg, label) \
b label

7
arch/powerpc/include/asm/opal.h
View File

@ -67,7 +67,6 @@ int64_t opal_pci_config_write_half_word(uint64_t phb_id, uint64_t bus_dev_func,
int64_t opal_pci_config_write_word(uint64_t phb_id, uint64_t bus_dev_func,
uint64_t offset, uint32_t data);
int64_t opal_set_xive(uint32_t isn, uint16_t server, uint8_t priority);
int64_t opal_rm_set_xive(uint32_t isn, uint16_t server, uint8_t priority);
int64_t opal_get_xive(uint32_t isn, __be16 *server, uint8_t *priority);
int64_t opal_register_exception_handler(uint64_t opal_exception,
uint64_t handler_address,
@ -220,18 +219,12 @@ int64_t opal_pci_set_power_state(uint64_t async_token, uint64_t id,
int64_t opal_pci_poll2(uint64_t id, uint64_t data);
int64_t opal_int_get_xirr(uint32_t *out_xirr, bool just_poll);
int64_t opal_rm_int_get_xirr(__be32 *out_xirr, bool just_poll);
int64_t opal_int_set_cppr(uint8_t cppr);
int64_t opal_int_eoi(uint32_t xirr);
int64_t opal_rm_int_eoi(uint32_t xirr);
int64_t opal_int_set_mfrr(uint32_t cpu, uint8_t mfrr);
int64_t opal_rm_int_set_mfrr(uint32_t cpu, uint8_t mfrr);
int64_t opal_pci_tce_kill(uint64_t phb_id, uint32_t kill_type,
uint32_t pe_num, uint32_t tce_size,
uint64_t dma_addr, uint32_t npages);
int64_t opal_rm_pci_tce_kill(uint64_t phb_id, uint32_t kill_type,
uint32_t pe_num, uint32_t tce_size,
uint64_t dma_addr, uint32_t npages);
/* Internal functions */
extern int early_init_dt_scan_opal(unsigned long node, const char *uname,

2
arch/powerpc/kernel/exceptions-64s.S
View File

@ -982,7 +982,7 @@ TRAMP_REAL_BEGIN(hmi_exception_early)
EXCEPTION_PROLOG_COMMON_2(PACA_EXGEN)
EXCEPTION_PROLOG_COMMON_3(0xe60)
addi r3,r1,STACK_FRAME_OVERHEAD
bl hmi_exception_realmode
BRANCH_LINK_TO_FAR(r4, hmi_exception_realmode)
/* Windup the stack. */
/* Move original HSRR0 and HSRR1 into the respective regs */
ld r9,_MSR(r1)

6
arch/powerpc/kernel/idle_book3s.S
View File

@ -250,7 +250,7 @@ fastsleep_workaround_at_entry:
/* Fast sleep workaround */
li r3,1
li r4,1
bl opal_rm_config_cpu_idle_state
bl opal_config_cpu_idle_state
/* Clear Lock bit */
li r0,0
@ -544,7 +544,7 @@ timebase_resync:
*/
ble cr3,clear_lock
/* Time base re-sync */
bl opal_rm_resync_timebase;
bl opal_resync_timebase;
/*
* If waking up from sleep, per core state is not lost, skip to
* clear_lock.
@ -633,7 +633,7 @@ hypervisor_state_restored:
fastsleep_workaround_at_exit:
li r3,1
li r4,0
bl opal_rm_config_cpu_idle_state
bl opal_config_cpu_idle_state
b timebase_resync
/*

34
arch/powerpc/kvm/book3s_hv_builtin.c
View File

@ -29,11 +29,6 @@
#include <asm/opal.h>
#include <asm/smp.h>
static bool in_realmode(void)
{
return !(mfmsr() & MSR_IR);
}
#define KVM_CMA_CHUNK_ORDER 18
/*
@ -230,13 +225,10 @@ void kvmhv_rm_send_ipi(int cpu)
/* Else poke the target with an IPI */
xics_phys = paca[cpu].kvm_hstate.xics_phys;
if (!in_realmode())
opal_int_set_mfrr(get_hard_smp_processor_id(cpu), IPI_PRIORITY);
else if (xics_phys)
if (xics_phys)
rm_writeb(xics_phys + XICS_MFRR, IPI_PRIORITY);
else
opal_rm_int_set_mfrr(get_hard_smp_processor_id(cpu),
IPI_PRIORITY);
opal_int_set_mfrr(get_hard_smp_processor_id(cpu), IPI_PRIORITY);
}
/*
@ -419,10 +411,8 @@ static long kvmppc_read_one_intr(bool *again)
/* Now read the interrupt from the ICP */
xics_phys = local_paca->kvm_hstate.xics_phys;
rc = 0;
if (!in_realmode())
if (!xics_phys)
rc = opal_int_get_xirr(&xirr, false);
else if (!xics_phys)
rc = opal_rm_int_get_xirr(&xirr, false);
else
xirr = _lwzcix(xics_phys + XICS_XIRR);
if (rc < 0)
@ -453,15 +443,12 @@ static long kvmppc_read_one_intr(bool *again)
*/
if (xisr == XICS_IPI) {
rc = 0;
if (!in_realmode()) {
opal_int_set_mfrr(hard_smp_processor_id(), 0xff);
rc = opal_int_eoi(h_xirr);
} else if (xics_phys) {
if (xics_phys) {
_stbcix(xics_phys + XICS_MFRR, 0xff);
_stwcix(xics_phys + XICS_XIRR, xirr);
} else {
opal_rm_int_set_mfrr(hard_smp_processor_id(), 0xff);
rc = opal_rm_int_eoi(h_xirr);
opal_int_set_mfrr(hard_smp_processor_id(), 0xff);
rc = opal_int_eoi(h_xirr);
}
/* If rc > 0, there is another interrupt pending */
*again = rc > 0;
@ -482,14 +469,11 @@ static long kvmppc_read_one_intr(bool *again)
/* We raced with the host,
* we need to resend that IPI, bummer
*/
if (!in_realmode())
opal_int_set_mfrr(hard_smp_processor_id(),
IPI_PRIORITY);
else if (xics_phys)
if (xics_phys)
_stbcix(xics_phys + XICS_MFRR, IPI_PRIORITY);
else
opal_rm_int_set_mfrr(hard_smp_processor_id(),
IPI_PRIORITY);
opal_int_set_mfrr(hard_smp_processor_id(),
IPI_PRIORITY);
/* Let side effects complete */
smp_mb();
return 1;

10
arch/powerpc/kvm/book3s_hv_rm_xics.c
View File

@ -36,7 +36,7 @@ EXPORT_SYMBOL(kvm_irq_bypass);
static void icp_rm_deliver_irq(struct kvmppc_xics *xics, struct kvmppc_icp *icp,
u32 new_irq, bool check_resend);
static int xics_opal_rm_set_server(unsigned int hw_irq, int server_cpu);
static int xics_opal_set_server(unsigned int hw_irq, int server_cpu);
/* -- ICS routines -- */
static void ics_rm_check_resend(struct kvmppc_xics *xics,
@ -720,7 +720,7 @@ static int ics_rm_eoi(struct kvm_vcpu *vcpu, u32 irq)
++vcpu->stat.pthru_host;
if (state->intr_cpu != pcpu) {
++vcpu->stat.pthru_bad_aff;
xics_opal_rm_set_server(state->host_irq, pcpu);
xics_opal_set_server(state->host_irq, pcpu);
}
state->intr_cpu = -1;
}
@ -781,16 +781,16 @@ static void icp_eoi(struct irq_chip *c, u32 hwirq, __be32 xirr, bool *again)
if (xics_phys) {
_stwcix(xics_phys + XICS_XIRR, xirr);
} else {
rc = opal_rm_int_eoi(be32_to_cpu(xirr));
rc = opal_int_eoi(be32_to_cpu(xirr));
*again = rc > 0;
}
}
static int xics_opal_rm_set_server(unsigned int hw_irq, int server_cpu)
static int xics_opal_set_server(unsigned int hw_irq, int server_cpu)
{
unsigned int mangle_cpu = get_hard_smp_processor_id(server_cpu) << 2;
return opal_rm_set_xive(hw_irq, mangle_cpu, DEFAULT_PRIORITY);
return opal_set_xive(hw_irq, mangle_cpu, DEFAULT_PRIORITY);
}
/*

70
arch/powerpc/platforms/powernv/opal-wrappers.S
View File

@ -58,14 +58,16 @@ END_FTR_SECTION(0, 1); \
#define OPAL_CALL(name, token) \
_GLOBAL_TOC(name); \
mfmsr r12; \
mflr r0; \
andi. r11,r12,MSR_IR|MSR_DR; \
std r0,PPC_LR_STKOFF(r1); \
li r0,token; \
beq opal_real_call; \
OPAL_BRANCH(opal_tracepoint_entry) \
mfcr r12; \
stw r12,8(r1); \
mfcr r11; \
stw r11,8(r1); \
li r11,0; \
mfmsr r12; \
ori r11,r11,MSR_EE; \
std r12,PACASAVEDMSR(r13); \
andc r12,r12,r11; \
@ -98,6 +100,30 @@ opal_return:
mtcr r4;
rfid
opal_real_call:
mfcr r11
stw r11,8(r1)
/* Set opal return address */
LOAD_REG_ADDR(r11, opal_return_realmode)
mtlr r11
li r11,MSR_LE
andc r12,r12,r11
mtspr SPRN_HSRR1,r12
LOAD_REG_ADDR(r11,opal)
ld r12,8(r11)
ld r2,0(r11)
mtspr SPRN_HSRR0,r12
hrfid
opal_return_realmode:
FIXUP_ENDIAN
ld r2,PACATOC(r13);
lwz r11,8(r1);
ld r12,PPC_LR_STKOFF(r1)
mtcr r11;
mtlr r12
blr
#ifdef CONFIG_TRACEPOINTS
opal_tracepoint_entry:
stdu r1,-STACKFRAMESIZE(r1)
@ -155,36 +181,6 @@ opal_tracepoint_return:
blr
#endif
#define OPAL_CALL_REAL(name, token) \
_GLOBAL_TOC(name); \
mflr r0; \
std r0,PPC_LR_STKOFF(r1); \
li r0,token; \
mfcr r12; \
stw r12,8(r1); \
\
/* Set opal return address */ \
LOAD_REG_ADDR(r11, opal_return_realmode); \
mtlr r11; \
mfmsr r12; \
li r11,MSR_LE; \
andc r12,r12,r11; \
mtspr SPRN_HSRR1,r12; \
LOAD_REG_ADDR(r11,opal); \
ld r12,8(r11); \
ld r2,0(r11); \
mtspr SPRN_HSRR0,r12; \
hrfid
opal_return_realmode:
FIXUP_ENDIAN
ld r2,PACATOC(r13);
lwz r11,8(r1);
ld r12,PPC_LR_STKOFF(r1)
mtcr r11;
mtlr r12
blr
OPAL_CALL(opal_invalid_call, OPAL_INVALID_CALL);
OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE);
@ -208,7 +204,6 @@ OPAL_CALL(opal_pci_config_write_byte, OPAL_PCI_CONFIG_WRITE_BYTE);
OPAL_CALL(opal_pci_config_write_half_word, OPAL_PCI_CONFIG_WRITE_HALF_WORD);
OPAL_CALL(opal_pci_config_write_word, OPAL_PCI_CONFIG_WRITE_WORD);
OPAL_CALL(opal_set_xive, OPAL_SET_XIVE);
OPAL_CALL_REAL(opal_rm_set_xive, OPAL_SET_XIVE);
OPAL_CALL(opal_get_xive, OPAL_GET_XIVE);
OPAL_CALL(opal_register_exception_handler, OPAL_REGISTER_OPAL_EXCEPTION_HANDLER);
OPAL_CALL(opal_pci_eeh_freeze_status, OPAL_PCI_EEH_FREEZE_STATUS);
@ -264,7 +259,6 @@ OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE);
OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE);
OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE);
OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE);
OPAL_CALL_REAL(opal_rm_resync_timebase, OPAL_RESYNC_TIMEBASE);
OPAL_CALL(opal_check_token, OPAL_CHECK_TOKEN);
OPAL_CALL(opal_dump_init, OPAL_DUMP_INIT);
OPAL_CALL(opal_dump_info, OPAL_DUMP_INFO);
@ -280,9 +274,7 @@ OPAL_CALL(opal_sensor_read, OPAL_SENSOR_READ);
OPAL_CALL(opal_get_param, OPAL_GET_PARAM);
OPAL_CALL(opal_set_param, OPAL_SET_PARAM);
OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI);
OPAL_CALL_REAL(opal_rm_handle_hmi, OPAL_HANDLE_HMI);
OPAL_CALL(opal_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE);
OPAL_CALL_REAL(opal_rm_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE);
OPAL_CALL(opal_slw_set_reg, OPAL_SLW_SET_REG);
OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION);
OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION);
@ -304,11 +296,7 @@ OPAL_CALL(opal_pci_get_presence_state, OPAL_PCI_GET_PRESENCE_STATE);
OPAL_CALL(opal_pci_get_power_state, OPAL_PCI_GET_POWER_STATE);
OPAL_CALL(opal_pci_set_power_state, OPAL_PCI_SET_POWER_STATE);
OPAL_CALL(opal_int_get_xirr, OPAL_INT_GET_XIRR);
OPAL_CALL_REAL(opal_rm_int_get_xirr, OPAL_INT_GET_XIRR);
OPAL_CALL(opal_int_set_cppr, OPAL_INT_SET_CPPR);
OPAL_CALL(opal_int_eoi, OPAL_INT_EOI);
OPAL_CALL_REAL(opal_rm_int_eoi, OPAL_INT_EOI);
OPAL_CALL(opal_int_set_mfrr, OPAL_INT_SET_MFRR);
OPAL_CALL_REAL(opal_rm_int_set_mfrr, OPAL_INT_SET_MFRR);
OPAL_CALL(opal_pci_tce_kill, OPAL_PCI_TCE_KILL);
OPAL_CALL_REAL(opal_rm_pci_tce_kill, OPAL_PCI_TCE_KILL);

5
arch/powerpc/platforms/powernv/pci-ioda.c
View File

@ -1962,11 +1962,6 @@ static void pnv_pci_ioda2_tce_invalidate(struct iommu_table *tbl,
if (phb->model == PNV_PHB_MODEL_PHB3 && phb->regs)
pnv_pci_phb3_tce_invalidate(pe, rm, shift,
index, npages);
else if (rm)
opal_rm_pci_tce_kill(phb->opal_id,
OPAL_PCI_TCE_KILL_PAGES,
pe->pe_number, 1u << shift,
index << shift, npages);
else
opal_pci_tce_kill(phb->opal_id,
OPAL_PCI_TCE_KILL_PAGES,