mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
![Mike Rapoport](/assets/img/avatar_default.png)
The replacement of <asm/pgrable.h> with <linux/pgtable.h> made the include of the latter in the middle of asm includes. Fix this up with the aid of the below script and manual adjustments here and there. import sys import re if len(sys.argv) is not 3: print "USAGE: %s <file> <header>" % (sys.argv[0]) sys.exit(1) hdr_to_move="#include <linux/%s>" % sys.argv[2] moved = False in_hdrs = False with open(sys.argv[1], "r") as f: lines = f.readlines() for _line in lines: line = _line.rstrip(' ') if line == hdr_to_move: continue if line.startswith("#include <linux/"): in_hdrs = True elif not moved and in_hdrs: moved = True print hdr_to_move print line Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Cain <bcain@codeaurora.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Mark Salter <msalter@redhat.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nick Hu <nickhu@andestech.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/20200514170327.31389-4-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
357 lines
9.1 KiB
C
357 lines
9.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* c 2001 PPC 64 Team, IBM Corp
|
|
*/
|
|
|
|
#include <linux/smp.h>
|
|
#include <linux/export.h>
|
|
#include <linux/memblock.h>
|
|
#include <linux/sched/task.h>
|
|
#include <linux/numa.h>
|
|
#include <linux/pgtable.h>
|
|
|
|
#include <asm/lppaca.h>
|
|
#include <asm/paca.h>
|
|
#include <asm/sections.h>
|
|
#include <asm/kexec.h>
|
|
#include <asm/svm.h>
|
|
#include <asm/ultravisor.h>
|
|
#include <asm/rtas.h>
|
|
|
|
#include "setup.h"
|
|
|
|
#ifndef CONFIG_SMP
|
|
#define boot_cpuid 0
|
|
#endif
|
|
|
|
static void *__init alloc_paca_data(unsigned long size, unsigned long align,
|
|
unsigned long limit, int cpu)
|
|
{
|
|
void *ptr;
|
|
int nid;
|
|
|
|
/*
|
|
* boot_cpuid paca is allocated very early before cpu_to_node is up.
|
|
* Set bottom-up mode, because the boot CPU should be on node-0,
|
|
* which will put its paca in the right place.
|
|
*/
|
|
if (cpu == boot_cpuid) {
|
|
nid = NUMA_NO_NODE;
|
|
memblock_set_bottom_up(true);
|
|
} else {
|
|
nid = early_cpu_to_node(cpu);
|
|
}
|
|
|
|
ptr = memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,
|
|
limit, nid);
|
|
if (!ptr)
|
|
panic("cannot allocate paca data");
|
|
|
|
if (cpu == boot_cpuid)
|
|
memblock_set_bottom_up(false);
|
|
|
|
return ptr;
|
|
}
|
|
|
|
#ifdef CONFIG_PPC_PSERIES
|
|
|
|
#define LPPACA_SIZE 0x400
|
|
|
|
static void *__init alloc_shared_lppaca(unsigned long size, unsigned long align,
|
|
unsigned long limit, int cpu)
|
|
{
|
|
size_t shared_lppaca_total_size = PAGE_ALIGN(nr_cpu_ids * LPPACA_SIZE);
|
|
static unsigned long shared_lppaca_size;
|
|
static void *shared_lppaca;
|
|
void *ptr;
|
|
|
|
if (!shared_lppaca) {
|
|
memblock_set_bottom_up(true);
|
|
|
|
shared_lppaca =
|
|
memblock_alloc_try_nid(shared_lppaca_total_size,
|
|
PAGE_SIZE, MEMBLOCK_LOW_LIMIT,
|
|
limit, NUMA_NO_NODE);
|
|
if (!shared_lppaca)
|
|
panic("cannot allocate shared data");
|
|
|
|
memblock_set_bottom_up(false);
|
|
uv_share_page(PHYS_PFN(__pa(shared_lppaca)),
|
|
shared_lppaca_total_size >> PAGE_SHIFT);
|
|
}
|
|
|
|
ptr = shared_lppaca + shared_lppaca_size;
|
|
shared_lppaca_size += size;
|
|
|
|
/*
|
|
* This is very early in boot, so no harm done if the kernel crashes at
|
|
* this point.
|
|
*/
|
|
BUG_ON(shared_lppaca_size >= shared_lppaca_total_size);
|
|
|
|
return ptr;
|
|
}
|
|
|
|
/*
|
|
* See asm/lppaca.h for more detail.
|
|
*
|
|
* lppaca structures must must be 1kB in size, L1 cache line aligned,
|
|
* and not cross 4kB boundary. A 1kB size and 1kB alignment will satisfy
|
|
* these requirements.
|
|
*/
|
|
static inline void init_lppaca(struct lppaca *lppaca)
|
|
{
|
|
BUILD_BUG_ON(sizeof(struct lppaca) != 640);
|
|
|
|
*lppaca = (struct lppaca) {
|
|
.desc = cpu_to_be32(0xd397d781), /* "LpPa" */
|
|
.size = cpu_to_be16(LPPACA_SIZE),
|
|
.fpregs_in_use = 1,
|
|
.slb_count = cpu_to_be16(64),
|
|
.vmxregs_in_use = 0,
|
|
.page_ins = 0, };
|
|
};
|
|
|
|
static struct lppaca * __init new_lppaca(int cpu, unsigned long limit)
|
|
{
|
|
struct lppaca *lp;
|
|
|
|
BUILD_BUG_ON(sizeof(struct lppaca) > LPPACA_SIZE);
|
|
|
|
if (early_cpu_has_feature(CPU_FTR_HVMODE))
|
|
return NULL;
|
|
|
|
if (is_secure_guest())
|
|
lp = alloc_shared_lppaca(LPPACA_SIZE, 0x400, limit, cpu);
|
|
else
|
|
lp = alloc_paca_data(LPPACA_SIZE, 0x400, limit, cpu);
|
|
|
|
init_lppaca(lp);
|
|
|
|
return lp;
|
|
}
|
|
#endif /* CONFIG_PPC_PSERIES */
|
|
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
|
|
/*
|
|
* 3 persistent SLBs are allocated here. The buffer will be zero
|
|
* initially, hence will all be invaild until we actually write them.
|
|
*
|
|
* If you make the number of persistent SLB entries dynamic, please also
|
|
* update PR KVM to flush and restore them accordingly.
|
|
*/
|
|
static struct slb_shadow * __init new_slb_shadow(int cpu, unsigned long limit)
|
|
{
|
|
struct slb_shadow *s;
|
|
|
|
if (cpu != boot_cpuid) {
|
|
/*
|
|
* Boot CPU comes here before early_radix_enabled
|
|
* is parsed (e.g., for disable_radix). So allocate
|
|
* always and this will be fixed up in free_unused_pacas.
|
|
*/
|
|
if (early_radix_enabled())
|
|
return NULL;
|
|
}
|
|
|
|
s = alloc_paca_data(sizeof(*s), L1_CACHE_BYTES, limit, cpu);
|
|
|
|
s->persistent = cpu_to_be32(SLB_NUM_BOLTED);
|
|
s->buffer_length = cpu_to_be32(sizeof(*s));
|
|
|
|
return s;
|
|
}
|
|
|
|
#endif /* CONFIG_PPC_BOOK3S_64 */
|
|
|
|
#ifdef CONFIG_PPC_PSERIES
|
|
/**
|
|
* new_rtas_args() - Allocates rtas args
|
|
* @cpu: CPU number
|
|
* @limit: Memory limit for this allocation
|
|
*
|
|
* Allocates a struct rtas_args and return it's pointer,
|
|
* if not in Hypervisor mode
|
|
*
|
|
* Return: Pointer to allocated rtas_args
|
|
* NULL if CPU in Hypervisor Mode
|
|
*/
|
|
static struct rtas_args * __init new_rtas_args(int cpu, unsigned long limit)
|
|
{
|
|
limit = min_t(unsigned long, limit, RTAS_INSTANTIATE_MAX);
|
|
|
|
if (early_cpu_has_feature(CPU_FTR_HVMODE))
|
|
return NULL;
|
|
|
|
return alloc_paca_data(sizeof(struct rtas_args), L1_CACHE_BYTES,
|
|
limit, cpu);
|
|
}
|
|
#endif /* CONFIG_PPC_PSERIES */
|
|
|
|
/* The Paca is an array with one entry per processor. Each contains an
|
|
* lppaca, which contains the information shared between the
|
|
* hypervisor and Linux.
|
|
* On systems with hardware multi-threading, there are two threads
|
|
* per processor. The Paca array must contain an entry for each thread.
|
|
* The VPD Areas will give a max logical processors = 2 * max physical
|
|
* processors. The processor VPD array needs one entry per physical
|
|
* processor (not thread).
|
|
*/
|
|
struct paca_struct **paca_ptrs __read_mostly;
|
|
EXPORT_SYMBOL(paca_ptrs);
|
|
|
|
void __init __nostackprotector initialise_paca(struct paca_struct *new_paca, int cpu)
|
|
{
|
|
#ifdef CONFIG_PPC_PSERIES
|
|
new_paca->lppaca_ptr = NULL;
|
|
#endif
|
|
#ifdef CONFIG_PPC_BOOK3E
|
|
new_paca->kernel_pgd = swapper_pg_dir;
|
|
#endif
|
|
new_paca->lock_token = 0x8000;
|
|
new_paca->paca_index = cpu;
|
|
new_paca->kernel_toc = kernel_toc_addr();
|
|
new_paca->kernelbase = (unsigned long) _stext;
|
|
/* Only set MSR:IR/DR when MMU is initialized */
|
|
new_paca->kernel_msr = MSR_KERNEL & ~(MSR_IR | MSR_DR);
|
|
new_paca->hw_cpu_id = 0xffff;
|
|
new_paca->kexec_state = KEXEC_STATE_NONE;
|
|
new_paca->__current = &init_task;
|
|
new_paca->data_offset = 0xfeeeeeeeeeeeeeeeULL;
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
new_paca->slb_shadow_ptr = NULL;
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC_BOOK3E
|
|
/* For now -- if we have threads this will be adjusted later */
|
|
new_paca->tcd_ptr = &new_paca->tcd;
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC_PSERIES
|
|
new_paca->rtas_args_reentrant = NULL;
|
|
#endif
|
|
}
|
|
|
|
/* Put the paca pointer into r13 and SPRG_PACA */
|
|
void __nostackprotector setup_paca(struct paca_struct *new_paca)
|
|
{
|
|
/* Setup r13 */
|
|
local_paca = new_paca;
|
|
|
|
#ifdef CONFIG_PPC_BOOK3E
|
|
/* On Book3E, initialize the TLB miss exception frames */
|
|
mtspr(SPRN_SPRG_TLB_EXFRAME, local_paca->extlb);
|
|
#else
|
|
/*
|
|
* In HV mode, we setup both HPACA and PACA to avoid problems
|
|
* if we do a GET_PACA() before the feature fixups have been
|
|
* applied.
|
|
*
|
|
* Normally you should test against CPU_FTR_HVMODE, but CPU features
|
|
* are not yet set up when we first reach here.
|
|
*/
|
|
if (mfmsr() & MSR_HV)
|
|
mtspr(SPRN_SPRG_HPACA, local_paca);
|
|
#endif
|
|
mtspr(SPRN_SPRG_PACA, local_paca);
|
|
|
|
}
|
|
|
|
static int __initdata paca_nr_cpu_ids;
|
|
static int __initdata paca_ptrs_size;
|
|
static int __initdata paca_struct_size;
|
|
|
|
void __init allocate_paca_ptrs(void)
|
|
{
|
|
paca_nr_cpu_ids = nr_cpu_ids;
|
|
|
|
paca_ptrs_size = sizeof(struct paca_struct *) * nr_cpu_ids;
|
|
paca_ptrs = memblock_alloc_raw(paca_ptrs_size, SMP_CACHE_BYTES);
|
|
if (!paca_ptrs)
|
|
panic("Failed to allocate %d bytes for paca pointers\n",
|
|
paca_ptrs_size);
|
|
|
|
memset(paca_ptrs, 0x88, paca_ptrs_size);
|
|
}
|
|
|
|
void __init allocate_paca(int cpu)
|
|
{
|
|
u64 limit;
|
|
struct paca_struct *paca;
|
|
|
|
BUG_ON(cpu >= paca_nr_cpu_ids);
|
|
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
/*
|
|
* We access pacas in real mode, and cannot take SLB faults
|
|
* on them when in virtual mode, so allocate them accordingly.
|
|
*/
|
|
limit = min(ppc64_bolted_size(), ppc64_rma_size);
|
|
#else
|
|
limit = ppc64_rma_size;
|
|
#endif
|
|
|
|
paca = alloc_paca_data(sizeof(struct paca_struct), L1_CACHE_BYTES,
|
|
limit, cpu);
|
|
paca_ptrs[cpu] = paca;
|
|
|
|
initialise_paca(paca, cpu);
|
|
#ifdef CONFIG_PPC_PSERIES
|
|
paca->lppaca_ptr = new_lppaca(cpu, limit);
|
|
#endif
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
paca->slb_shadow_ptr = new_slb_shadow(cpu, limit);
|
|
#endif
|
|
#ifdef CONFIG_PPC_PSERIES
|
|
paca->rtas_args_reentrant = new_rtas_args(cpu, limit);
|
|
#endif
|
|
paca_struct_size += sizeof(struct paca_struct);
|
|
}
|
|
|
|
void __init free_unused_pacas(void)
|
|
{
|
|
int new_ptrs_size;
|
|
|
|
new_ptrs_size = sizeof(struct paca_struct *) * nr_cpu_ids;
|
|
if (new_ptrs_size < paca_ptrs_size)
|
|
memblock_free(__pa(paca_ptrs) + new_ptrs_size,
|
|
paca_ptrs_size - new_ptrs_size);
|
|
|
|
paca_nr_cpu_ids = nr_cpu_ids;
|
|
paca_ptrs_size = new_ptrs_size;
|
|
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
if (early_radix_enabled()) {
|
|
/* Ugly fixup, see new_slb_shadow() */
|
|
memblock_free(__pa(paca_ptrs[boot_cpuid]->slb_shadow_ptr),
|
|
sizeof(struct slb_shadow));
|
|
paca_ptrs[boot_cpuid]->slb_shadow_ptr = NULL;
|
|
}
|
|
#endif
|
|
|
|
printk(KERN_DEBUG "Allocated %u bytes for %u pacas\n",
|
|
paca_ptrs_size + paca_struct_size, nr_cpu_ids);
|
|
}
|
|
|
|
void copy_mm_to_paca(struct mm_struct *mm)
|
|
{
|
|
#ifdef CONFIG_PPC_BOOK3S
|
|
mm_context_t *context = &mm->context;
|
|
|
|
get_paca()->mm_ctx_id = context->id;
|
|
#ifdef CONFIG_PPC_MM_SLICES
|
|
VM_BUG_ON(!mm_ctx_slb_addr_limit(context));
|
|
get_paca()->mm_ctx_slb_addr_limit = mm_ctx_slb_addr_limit(context);
|
|
memcpy(&get_paca()->mm_ctx_low_slices_psize, mm_ctx_low_slices(context),
|
|
LOW_SLICE_ARRAY_SZ);
|
|
memcpy(&get_paca()->mm_ctx_high_slices_psize, mm_ctx_high_slices(context),
|
|
TASK_SLICE_ARRAY_SZ(context));
|
|
#else /* CONFIG_PPC_MM_SLICES */
|
|
get_paca()->mm_ctx_user_psize = context->user_psize;
|
|
get_paca()->mm_ctx_sllp = context->sllp;
|
|
#endif
|
|
#else /* !CONFIG_PPC_BOOK3S */
|
|
return;
|
|
#endif
|
|
}
|