select HAVE_KRETPROBES
select HAVE_DEBUG_KMEMLEAK
select ARCH_BINFMT_ELF_RANDOMIZE_PIE
- select HAVE_ARCH_TRANSPARENT_HUGEPAGE
+ select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
select RTC_LIB if !MACH_LOONGSON
select GENERIC_ATOMIC64 if !64BIT
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select GENERIC_CLOCKEVENTS
select GENERIC_CMOS_UPDATE
select HAVE_MOD_ARCH_SPECIFIC
- select HAVE_VIRT_TO_BUS
+ select VIRT_TO_BUS
select MODULES_USE_ELF_REL if MODULES
select MODULES_USE_ELF_RELA if MODULES && 64BIT
select CLONE_BACKWARDS
select HW_HAS_PCI
select I8253
select I8259
- select MIPS_BOARDS_GEN
select MIPS_BONITO64
select MIPS_CPU_SCACHE
select PCI_GT64XXX_PCI0
select DMA_NONCOHERENT
select IRQ_CPU
select IRQ_GIC
- select MIPS_BOARDS_GEN
select MIPS_CPU_SCACHE
select MIPS_MSC
select SYS_HAS_CPU_MIPS32_R1
bool "SNI RM200/300/400"
select FW_ARC if CPU_LITTLE_ENDIAN
select FW_ARC32 if CPU_LITTLE_ENDIAN
- select SNIPROM if CPU_BIG_ENDIAN
+ select FW_SNIPROM if CPU_BIG_ENDIAN
select ARCH_MAY_HAVE_PC_FDC
select BOOT_ELF32
select CEVT_R4K
config MIPS_NILE4
bool
-config MIPS_DISABLE_OBSOLETE_IDE
- bool
-
config SYNC_R4K
bool
config IRQ_GIC
bool
-config MIPS_BOARDS_GEN
- bool
-
config PCI_GT64XXX_PCI0
bool
config FW_ARC32
bool
-config SNIPROM
+config FW_SNIPROM
bool
config BOOT_ELF32
config MIPS_L1_CACHE_SHIFT
int
- default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
+ default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
default "6" if MIPS_CPU_SCACHE
default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
default "5"
select CPU_HAS_PREFETCH
select CPU_SUPPORTS_32BIT_KERNEL
select CPU_SUPPORTS_HIGHMEM
+ select HAVE_KVM
help
Choose this option to build a kernel for release 2 or later of the
MIPS32 architecture. Most modern embedded systems with a 32-bit
select CPU_SUPPORTS_32BIT_KERNEL
select CPU_SUPPORTS_64BIT_KERNEL
select CPU_SUPPORTS_HIGHMEM
- select CPU_HAS_LLSC
select WEAK_ORDERING
select WEAK_REORDERING_BEYOND_LLSC
select CPU_HAS_PREFETCH
endchoice
+ config KVM_GUEST
+ bool "KVM Guest Kernel"
+ help
+ Select this option if building a guest kernel for KVM (Trap & Emulate) mode
+
+ config KVM_HOST_FREQ
+ int "KVM Host Processor Frequency (MHz)"
+ depends on KVM_GUEST
+ default 500
+ help
+ Select this option if building a guest kernel for KVM to skip
+ RTC emulation when determining guest CPU Frequency. Instead, the guest
+ processor frequency is automatically derived from the host frequency.
+
choice
prompt "Kernel page size"
default PAGE_SIZE_4KB
depends on CPU_SB1 && CPU_SB1_PASS_2
default y
+
config 64BIT_PHYS_ADDR
bool
source "crypto/Kconfig"
source "lib/Kconfig"
+
+ source "arch/mips/kvm/Kconfig"
#ifdef CONFIG_MIPS_PGD_C0_CONTEXT
-#define TLBMISS_HANDLER_SETUP_PGD(pgd) \
- tlbmiss_handler_setup_pgd((unsigned long)(pgd))
-
-extern void tlbmiss_handler_setup_pgd(unsigned long pgd);
+#define TLBMISS_HANDLER_SETUP_PGD(pgd) \
+do { \
+ void (*tlbmiss_handler_setup_pgd)(unsigned long); \
+ extern u32 tlbmiss_handler_setup_pgd_array[16]; \
+ \
+ tlbmiss_handler_setup_pgd = \
+ (__typeof__(tlbmiss_handler_setup_pgd)) tlbmiss_handler_setup_pgd_array; \
+ tlbmiss_handler_setup_pgd((unsigned long)(pgd)); \
+} while (0)
#define TLBMISS_HANDLER_SETUP() \
do { \
static inline void
get_new_mmu_context(struct mm_struct *mm, unsigned long cpu)
{
+ extern void kvm_local_flush_tlb_all(void);
unsigned long asid = asid_cache(cpu);
if (! ((asid += ASID_INC) & ASID_MASK) ) {
if (cpu_has_vtag_icache)
flush_icache_all();
+ #ifdef CONFIG_VIRTUALIZATION
+ kvm_local_flush_tlb_all(); /* start new asid cycle */
+ #else
local_flush_tlb_all(); /* start new asid cycle */
+ #endif
if (!asid) /* fix version if needed */
asid = ASID_FIRST_VERSION;
}
+
cpu_context(cpu, mm) = asid_cache(cpu) = asid;
}
{
int i;
- for_each_online_cpu(i)
+ for_each_possible_cpu(i)
cpu_context(i, mm) = 0;
return 0;
extern asmlinkage void r4k_wait(void);
extern asmlinkage void rollback_handle_int(void);
extern asmlinkage void handle_int(void);
-extern asmlinkage void handle_tlbm(void);
-extern asmlinkage void handle_tlbl(void);
-extern asmlinkage void handle_tlbs(void);
+extern u32 handle_tlbl[];
+extern u32 handle_tlbs[];
+extern u32 handle_tlbm[];
extern asmlinkage void handle_adel(void);
extern asmlinkage void handle_ades(void);
extern asmlinkage void handle_ibe(void);
void __init *set_except_vector(int n, void *addr)
{
unsigned long handler = (unsigned long) addr;
- unsigned long old_handler = exception_handlers[n];
+ unsigned long old_handler = xchg(&exception_handlers[n], handler);
- exception_handlers[n] = handler;
if (n == 0 && cpu_has_divec) {
unsigned long jump_mask = ~((1 << 28) - 1);
u32 *buf = (u32 *)(ebase + 0x200);
return (void *)old_handler;
}
-static asmlinkage void do_default_vi(void)
+static void do_default_vi(void)
{
show_regs(get_irq_regs());
panic("Caught unexpected vectored interrupt.");
#ifdef CONFIG_64BIT
status_set |= ST0_FR|ST0_KX|ST0_SX|ST0_UX;
#endif
- if (current_cpu_data.isa_level == MIPS_CPU_ISA_IV)
+ if (current_cpu_data.isa_level & MIPS_CPU_ISA_IV)
status_set |= ST0_XX;
if (cpu_has_dsp)
status_set |= ST0_MX;
ebase = (unsigned long)
__alloc_bootmem(size, 1 << fls(size), 0);
} else {
- ebase = CKSEG0;
+ #ifdef CONFIG_KVM_GUEST
+ #define KVM_GUEST_KSEG0 0x40000000
+ ebase = KVM_GUEST_KSEG0;
+ #else
+ ebase = CKSEG0;
+ #endif
if (cpu_has_mips_r2)
ebase += (read_c0_ebase() & 0x3ffff000);
}
r4k_blast_dcache_page_indexed = blast_dcache64_page_indexed;
}
- static void (* r4k_blast_dcache)(void);
+ void (* r4k_blast_dcache)(void);
+ EXPORT_SYMBOL(r4k_blast_dcache);
static void __cpuinit r4k_blast_dcache_setup(void)
{
r4k_blast_icache_page_indexed = blast_icache64_page_indexed;
}
- static void (* r4k_blast_icache)(void);
+ void (* r4k_blast_icache)(void);
+ EXPORT_SYMBOL(r4k_blast_icache);
static void __cpuinit r4k_blast_icache_setup(void)
{
return;
default:
- if (c->isa_level == MIPS_CPU_ISA_M32R1 ||
- c->isa_level == MIPS_CPU_ISA_M32R2 ||
- c->isa_level == MIPS_CPU_ISA_M64R1 ||
- c->isa_level == MIPS_CPU_ISA_M64R2) {
+ if (c->isa_level & (MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M32R2 |
+ MIPS_CPU_ISA_M64R1 | MIPS_CPU_ISA_M64R2)) {
#ifdef CONFIG_MIPS_CPU_SCACHE
if (mips_sc_init ()) {
scache_size = c->scache.ways * c->scache.sets * c->scache.linesz;
}
int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
- gpa_t gpa)
+ gpa_t gpa, unsigned long len)
{
struct kvm_memslots *slots = kvm_memslots(kvm);
int offset = offset_in_page(gpa);
- gfn_t gfn = gpa >> PAGE_SHIFT;
+ gfn_t start_gfn = gpa >> PAGE_SHIFT;
+ gfn_t end_gfn = (gpa + len - 1) >> PAGE_SHIFT;
+ gfn_t nr_pages_needed = end_gfn - start_gfn + 1;
+ gfn_t nr_pages_avail;
ghc->gpa = gpa;
ghc->generation = slots->generation;
- ghc->memslot = gfn_to_memslot(kvm, gfn);
- ghc->hva = gfn_to_hva_many(ghc->memslot, gfn, NULL);
- if (!kvm_is_error_hva(ghc->hva))
+ ghc->len = len;
+ ghc->memslot = gfn_to_memslot(kvm, start_gfn);
+ ghc->hva = gfn_to_hva_many(ghc->memslot, start_gfn, &nr_pages_avail);
+ if (!kvm_is_error_hva(ghc->hva) && nr_pages_avail >= nr_pages_needed) {
ghc->hva += offset;
- else
- return -EFAULT;
-
+ } else {
+ /*
+ * If the requested region crosses two memslots, we still
+ * verify that the entire region is valid here.
+ */
+ while (start_gfn <= end_gfn) {
+ ghc->memslot = gfn_to_memslot(kvm, start_gfn);
+ ghc->hva = gfn_to_hva_many(ghc->memslot, start_gfn,
+ &nr_pages_avail);
+ if (kvm_is_error_hva(ghc->hva))
+ return -EFAULT;
+ start_gfn += nr_pages_avail;
+ }
+ /* Use the slow path for cross page reads and writes. */
+ ghc->memslot = NULL;
+ }
return 0;
}
EXPORT_SYMBOL_GPL(kvm_gfn_to_hva_cache_init);
struct kvm_memslots *slots = kvm_memslots(kvm);
int r;
+ BUG_ON(len > ghc->len);
+
if (slots->generation != ghc->generation)
- kvm_gfn_to_hva_cache_init(kvm, ghc, ghc->gpa);
+ kvm_gfn_to_hva_cache_init(kvm, ghc, ghc->gpa, ghc->len);
+
+ if (unlikely(!ghc->memslot))
+ return kvm_write_guest(kvm, ghc->gpa, data, len);
if (kvm_is_error_hva(ghc->hva))
return -EFAULT;
struct kvm_memslots *slots = kvm_memslots(kvm);
int r;
+ BUG_ON(len > ghc->len);
+
if (slots->generation != ghc->generation)
- kvm_gfn_to_hva_cache_init(kvm, ghc, ghc->gpa);
+ kvm_gfn_to_hva_cache_init(kvm, ghc, ghc->gpa, ghc->len);
+
+ if (unlikely(!ghc->memslot))
+ return kvm_read_guest(kvm, ghc->gpa, data, len);
if (kvm_is_error_hva(ghc->hva))
return -EFAULT;
if (vcpu->kvm->mm != current->mm)
return -EIO;
- #if defined(CONFIG_S390) || defined(CONFIG_PPC)
+ #if defined(CONFIG_S390) || defined(CONFIG_PPC) || defined(CONFIG_MIPS)
/*
* Special cases: vcpu ioctls that are asynchronous to vcpu execution,
* so vcpu_load() would break it.
projects / mirror_ubuntu-jammy-kernel.git / commitdiff