shell bypass 403
UnknownSec Shell
:
/
usr
/
src
/
linux-headers-6.8.0-83
/
arch
/
powerpc
/
include
/
asm
/ [
drwxr-xr-x
]
upload
mass deface
mass delete
console
info server
name :
lppaca.h
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * lppaca.h * Copyright (C) 2001 Mike Corrigan IBM Corporation */ #ifndef _ASM_POWERPC_LPPACA_H #define _ASM_POWERPC_LPPACA_H #ifdef __KERNEL__ /* * These definitions relate to hypervisors that only exist when using * a server type processor */ #ifdef CONFIG_PPC_BOOK3S /* * This control block contains the data that is shared between the * hypervisor and the OS. */ #include <linux/cache.h> #include <linux/threads.h> #include <asm/types.h> #include <asm/mmu.h> #include <asm/firmware.h> #include <asm/paca.h> /* * The lppaca is the "virtual processor area" registered with the hypervisor, * H_REGISTER_VPA etc. * * According to PAPR, the structure is 640 bytes long, must be L1 cache line * aligned, and must not cross a 4kB boundary. Its size field must be at * least 640 bytes (but may be more). * * Pre-v4.14 KVM hypervisors reject the VPA if its size field is smaller than * 1kB, so we dynamically allocate 1kB and advertise size as 1kB, but keep * this structure as the canonical 640 byte size. */ struct lppaca { /* cacheline 1 contains read-only data */ __be32 desc; /* Eye catcher 0xD397D781 */ __be16 size; /* Size of this struct */ u8 reserved1[3]; u8 __old_status; /* Old status, including shared proc */ u8 reserved3[14]; volatile __be32 dyn_hw_node_id; /* Dynamic hardware node id */ volatile __be32 dyn_hw_proc_id; /* Dynamic hardware proc id */ u8 reserved4[56]; volatile u8 vphn_assoc_counts[8]; /* Virtual processor home node */ /* associativity change counters */ u8 reserved5[32]; /* cacheline 2 contains local read-write data */ u8 reserved6[48]; u8 cede_latency_hint; u8 ebb_regs_in_use; u8 reserved7[6]; u8 dtl_enable_mask; /* Dispatch Trace Log mask */ u8 donate_dedicated_cpu; /* Donate dedicated CPU cycles */ u8 fpregs_in_use; u8 pmcregs_in_use; u8 reserved8[28]; __be64 wait_state_cycles; /* Wait cycles for this proc */ u8 reserved9[28]; __be16 slb_count; /* # of SLBs to maintain */ u8 idle; /* Indicate OS is idle */ u8 vmxregs_in_use; /* cacheline 3 is shared with other processors */ /* * This is the yield_count. An "odd" value (low bit on) means that * the processor is yielded (either because of an OS yield or a * hypervisor preempt). An even value implies that the processor is * currently executing. * NOTE: Even dedicated processor partitions can yield so this * field cannot be used to determine if we are shared or dedicated. */ volatile __be32 yield_count; volatile __be32 dispersion_count; /* dispatch changed physical cpu */ volatile __be64 cmo_faults; /* CMO page fault count */ volatile __be64 cmo_fault_time; /* CMO page fault time */ u8 reserved10[64]; /* [S]PURR expropriated/donated */ volatile __be64 enqueue_dispatch_tb; /* Total TB enqueue->dispatch */ volatile __be64 ready_enqueue_tb; /* Total TB ready->enqueue */ volatile __be64 wait_ready_tb; /* Total TB wait->ready */ u8 reserved11[16]; /* cacheline 4-5 */ __be32 page_ins; /* CMO Hint - # page ins by OS */ u8 reserved12[148]; volatile __be64 dtl_idx; /* Dispatch Trace Log head index */ u8 reserved13[96]; } ____cacheline_aligned; #define lppaca_of(cpu) (*paca_ptrs[cpu]->lppaca_ptr) /* * We are using a non architected field to determine if a partition is * shared or dedicated. This currently works on both KVM and PHYP, but * we will have to transition to something better. */ #define LPPACA_OLD_SHARED_PROC 2 #ifdef CONFIG_PPC_PSERIES /* * All CPUs should have the same shared proc value, so directly access the PACA * to avoid false positives from DEBUG_PREEMPT. */ static inline bool lppaca_shared_proc(void) { struct lppaca *l = local_paca->lppaca_ptr; if (!firmware_has_feature(FW_FEATURE_SPLPAR)) return false; return !!(l->__old_status & LPPACA_OLD_SHARED_PROC); } #define get_lppaca() (get_paca()->lppaca_ptr) #endif /* * SLB shadow buffer structure as defined in the PAPR. The save_area * contains adjacent ESID and VSID pairs for each shadowed SLB. The * ESID is stored in the lower 64bits, then the VSID. */ struct slb_shadow { __be32 persistent; /* Number of persistent SLBs */ __be32 buffer_length; /* Total shadow buffer length */ __be64 reserved; struct { __be64 esid; __be64 vsid; } save_area[SLB_NUM_BOLTED]; } ____cacheline_aligned; #endif /* CONFIG_PPC_BOOK3S */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_LPPACA_H */
© 2026 UnknownSec