58553b9925
IPI_STOP IPIs. - Change the i386 and amd64 MD IPI code to send an NMI if STOP_NMI is enabled if an attempt is made to send an IPI_STOP IPI. If the kernel option is enabled, there is also a sysctl to change the behavior at runtime (debug.stop_cpus_with_nmi which defaults to enabled). This includes removing stop_cpus_nmi() and making ipi_nmi_selected() a private function for i386 and amd64. - Fix ipi_all(), ipi_all_but_self(), and ipi_self() on i386 and amd64 to properly handle bitmapped IPIs as well as IPI_STOP IPIs when STOP_NMI is enabled. - Fix ipi_nmi_handler() to execute the restart function on the first CPU that is restarted making use of atomic_readandclear() rather than assuming that the BSP is always included in the set of restarted CPUs. Also, the NMI handler didn't clear the function pointer meaning that subsequent stop and restarts could execute the function again. - Define a new macro HAVE_STOPPEDPCBS on i386 and amd64 to control the use of stoppedpcbs[] and always enable it for i386 and amd64 instead of being dependent on KDB_STOP_NMI. It works fine in both the NMI and non-NMI cases.
75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/*-
|
|
* ----------------------------------------------------------------------------
|
|
* "THE BEER-WARE LICENSE" (Revision 42):
|
|
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
|
|
* can do whatever you want with this stuff. If we meet some day, and you think
|
|
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
|
|
* ----------------------------------------------------------------------------
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
*/
|
|
|
|
#ifndef _MACHINE_SMP_H_
|
|
#define _MACHINE_SMP_H_
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#ifdef SMP
|
|
|
|
#ifndef LOCORE
|
|
|
|
#include <sys/bus.h>
|
|
#include <machine/frame.h>
|
|
#include <machine/intr_machdep.h>
|
|
#include <machine/apicvar.h>
|
|
|
|
/* global symbols in mpboot.S */
|
|
extern char mptramp_start[];
|
|
extern char mptramp_end[];
|
|
extern u_int32_t mptramp_pagetables;
|
|
|
|
/* global data in mp_machdep.c */
|
|
extern int mp_naps;
|
|
extern int boot_cpu_id;
|
|
extern struct pcb stoppcbs[];
|
|
extern struct mtx smp_tlb_mtx;
|
|
|
|
/* IPI handlers */
|
|
inthand_t
|
|
IDTVEC(invltlb), /* TLB shootdowns - global */
|
|
IDTVEC(invlpg), /* TLB shootdowns - 1 page */
|
|
IDTVEC(invlrng), /* TLB shootdowns - page range */
|
|
IDTVEC(ipi_intr_bitmap_handler), /* Bitmap based IPIs */
|
|
IDTVEC(cpustop), /* CPU stops & waits to be restarted */
|
|
IDTVEC(rendezvous); /* handle CPU rendezvous */
|
|
|
|
/* functions in mp_machdep.c */
|
|
void cpu_add(u_int apic_id, char boot_cpu);
|
|
void init_secondary(void);
|
|
void ipi_selected(u_int cpus, u_int ipi);
|
|
void ipi_all(u_int ipi);
|
|
void ipi_all_but_self(u_int ipi);
|
|
void ipi_self(u_int ipi);
|
|
void ipi_bitmap_handler(struct clockframe frame);
|
|
u_int mp_bootaddress(u_int);
|
|
int mp_grab_cpu_hlt(void);
|
|
void mp_topology(void);
|
|
void smp_invlpg(vm_offset_t addr);
|
|
void smp_masked_invlpg(u_int mask, vm_offset_t addr);
|
|
void smp_invlpg_range(vm_offset_t startva, vm_offset_t endva);
|
|
void smp_masked_invlpg_range(u_int mask, vm_offset_t startva,
|
|
vm_offset_t endva);
|
|
void smp_invltlb(void);
|
|
void smp_masked_invltlb(u_int mask);
|
|
|
|
#ifdef STOP_NMI
|
|
int ipi_nmi_handler(void);
|
|
#endif
|
|
|
|
#endif /* !LOCORE */
|
|
#endif /* SMP */
|
|
|
|
#endif /* _KERNEL */
|
|
#endif /* _MACHINE_SMP_H_ */
|