Date: Sun, 4 Jul 2010 12:43:12 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r209695 - head/sys/sparc64/include Message-ID: <201007041243.o64ChCEG032922@svn.freebsd.org>
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Author: marius Date: Sun Jul 4 12:43:12 2010 New Revision: 209695 URL: http://svn.freebsd.org/changeset/base/209695 Log: - Pin the IPI cache and TLB demap functions in order to prevent migration between determining the other CPUs and calling cpu_ipi_selected(), which apart from generally doing the wrong thing can lead to a panic when a CPU is told to IPI itself (which sun4u doesn't support). Reported and tested by: Nathaniel W Filardo - Add __unused where appropriate. MFC after: 3 days Modified: head/sys/sparc64/include/smp.h Modified: head/sys/sparc64/include/smp.h ============================================================================== --- head/sys/sparc64/include/smp.h Sun Jul 4 12:30:55 2010 (r209694) +++ head/sys/sparc64/include/smp.h Sun Jul 4 12:43:12 2010 (r209695) @@ -38,6 +38,9 @@ #ifndef LOCORE +#include <sys/proc.h> +#include <sys/sched.h> + #include <machine/intr_machdep.h> #include <machine/pcb.h> #include <machine/tte.h> @@ -139,6 +142,7 @@ ipi_dcache_page_inval(void *func, vm_pad if (smp_cpus == 1) return (NULL); + sched_pin(); ica = &ipi_cache_args; mtx_lock_spin(&ipi_mtx); ica->ica_mask = all_cpus; @@ -154,6 +158,7 @@ ipi_icache_page_inval(void *func, vm_pad if (smp_cpus == 1) return (NULL); + sched_pin(); ica = &ipi_cache_args; mtx_lock_spin(&ipi_mtx); ica->ica_mask = all_cpus; @@ -170,8 +175,11 @@ ipi_tlb_context_demap(struct pmap *pm) if (smp_cpus == 1) return (NULL); - if ((cpus = (pm->pm_active & PCPU_GET(other_cpus))) == 0) + sched_pin(); + if ((cpus = (pm->pm_active & PCPU_GET(other_cpus))) == 0) { + sched_unpin(); return (NULL); + } ita = &ipi_tlb_args; mtx_lock_spin(&ipi_mtx); ita->ita_mask = cpus | PCPU_GET(cpumask); @@ -189,8 +197,11 @@ ipi_tlb_page_demap(struct pmap *pm, vm_o if (smp_cpus == 1) return (NULL); - if ((cpus = (pm->pm_active & PCPU_GET(other_cpus))) == 0) + sched_pin(); + if ((cpus = (pm->pm_active & PCPU_GET(other_cpus))) == 0) { + sched_unpin(); return (NULL); + } ita = &ipi_tlb_args; mtx_lock_spin(&ipi_mtx); ita->ita_mask = cpus | PCPU_GET(cpumask); @@ -208,8 +219,11 @@ ipi_tlb_range_demap(struct pmap *pm, vm_ if (smp_cpus == 1) return (NULL); - if ((cpus = (pm->pm_active & PCPU_GET(other_cpus))) == 0) + sched_pin(); + if ((cpus = (pm->pm_active & PCPU_GET(other_cpus))) == 0) { + sched_unpin(); return (NULL); + } ita = &ipi_tlb_args; mtx_lock_spin(&ipi_mtx); ita->ita_mask = cpus | PCPU_GET(cpumask); @@ -230,6 +244,7 @@ ipi_wait(void *cookie) while (*mask != 0) ; mtx_unlock_spin(&ipi_mtx); + sched_unpin(); } } @@ -242,35 +257,36 @@ ipi_wait(void *cookie) #ifndef LOCORE static __inline void * -ipi_dcache_page_inval(void *func, vm_paddr_t pa) +ipi_dcache_page_inval(void *func __unused, vm_paddr_t pa __unused) { return (NULL); } static __inline void * -ipi_icache_page_inval(void *func, vm_paddr_t pa) +ipi_icache_page_inval(void *func __unused, vm_paddr_t pa __unused) { return (NULL); } static __inline void * -ipi_tlb_context_demap(struct pmap *pm) +ipi_tlb_context_demap(struct pmap *pm __unused) { return (NULL); } static __inline void * -ipi_tlb_page_demap(struct pmap *pm, vm_offset_t va) +ipi_tlb_page_demap(struct pmap *pm __unused, vm_offset_t va __unused) { return (NULL); } static __inline void * -ipi_tlb_range_demap(struct pmap *pm, vm_offset_t start, vm_offset_t end) +ipi_tlb_range_demap(struct pmap *pm __unused, vm_offset_t start __unused, + __unused vm_offset_t end) { return (NULL);
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