49f1971051
Since lazy MMU batching mode still allows interrupts to enter, it is possible for interrupt handlers to try to use kmap_atomic, which fails when lazy mode is active, since the PTE update to highmem will be delayed. The best workaround is to issue an explicit flush in kmap_atomic_functions case; this is the only way nested PTE updates can happen in the interrupt handler. Thanks to Jeremy Fitzhardinge for noting the bug and suggestions on a fix. This patch gets reverted again when we start 2.6.22 and the bug gets fixed differently. Signed-off-by: Zachary Amsden <zach@vmware.com> Cc: Andi Kleen <ak@muc.de> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| .. | ||
| acpi | ||
| cpu | ||
| .gitignore | ||
| alternative.c | ||
| apic.c | ||
| apm.c | ||
| asm-offsets.c | ||
| bootflag.c | ||
| cpuid.c | ||
| crash_dump.c | ||
| crash.c | ||
| doublefault.c | ||
| e820.c | ||
| early_printk.c | ||
| efi_stub.S | ||
| efi.c | ||
| entry.S | ||
| head.S | ||
| hpet.c | ||
| i386_ksyms.c | ||
| i387.c | ||
| i8237.c | ||
| i8253.c | ||
| i8259.c | ||
| init_task.c | ||
| io_apic.c | ||
| ioport.c | ||
| irq.c | ||
| kprobes.c | ||
| ldt.c | ||
| machine_kexec.c | ||
| Makefile | ||
| mca.c | ||
| microcode.c | ||
| module.c | ||
| mpparse.c | ||
| msr.c | ||
| nmi.c | ||
| numaq.c | ||
| paravirt.c | ||
| pci-dma.c | ||
| pcspeaker.c | ||
| process.c | ||
| ptrace.c | ||
| quirks.c | ||
| reboot_fixups.c | ||
| reboot.c | ||
| relocate_kernel.S | ||
| scx200.c | ||
| setup.c | ||
| sigframe.h | ||
| signal.c | ||
| smp.c | ||
| smpboot.c | ||
| srat.c | ||
| summit.c | ||
| sys_i386.c | ||
| syscall_table.S | ||
| sysenter.c | ||
| time.c | ||
| topology.c | ||
| trampoline.S | ||
| traps.c | ||
| tsc_sync.c | ||
| tsc.c | ||
| vm86.c | ||
| vmi.c | ||
| vmitime.c | ||
| vmlinux.lds.S | ||
| vsyscall-int80.S | ||
| vsyscall-note.S | ||
| vsyscall-sigreturn.S | ||
| vsyscall-sysenter.S | ||
| vsyscall.lds.S | ||
| vsyscall.S | ||