2.5.39 - might_sleep() exception - ACPI/APIC, UML compile issues on MP 2000+

System info:

00:00.0 Host bridge: Advanced Micro Devices [AMD] AMD-760 MP [IGD4-2P] System Controller (rev 11) 00:01.0 PCI bridge: Advanced Micro Devices [AMD] AMD-760 MP [IGD4-2P] AGP Bridge 00:07.0 ISA bridge: Advanced Micro Devices [AMD] AMD-768 [Opus] ISA (rev 04) 00:07.1 IDE interface: Advanced Micro Devices [AMD] AMD-768 [Opus] IDE (rev 04) 00:07.3 Bridge: Advanced Micro Devices [AMD] AMD-768 [Opus] ACPI (rev 03)
00:10.0 PCI bridge: Advanced Micro Devices [AMD] AMD-768 [Opus] PCI (rev 04) 01:05.0 VGA compatible controller: ATI Technologies Inc Radeon 7500 QW
02:04.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10) 02:05.0 Ethernet controller: 3Com Corporation 3c980-TX 10/100baseTX NIC [Python-T] (rev 78) 02:08.0 USB Controller: NEC Corporation USB (rev 41)
02:08.1 USB Controller: NEC Corporation USB (rev 41)
02:08.2 USB Controller: NEC Corporation USB 2.0 (rev 02)

1) Kernel on boot up yet lets me continue using system (In 2.5.39 right now).

=============

static inline void * __kmem_cache_alloc (kmem_cache_t *cachep, int flags)

{
        unsigned long save_flags;
        void* objp;

        if (flags & __GFP_WAIT)
                might_sleep(); <---------------

Error from dmesg:
===========

Sep 28 04:05:42 unknown kernel: Sleeping function called from illegal context at slab.c:1374
Sep 28 04:05:42 unknown kernel: dffc9ecc c0135c1c c0317f1a 0000055e 04000000 04000000 c024b160 dfe1a2c0
Sep 28 04:05:42 unknown kernel:        c010995f c15070c0 000001d0 0000055e 04000000 dfe1a2c0 c03ff840 dfe1a2c0
Sep 28 04:05:42 unknown kernel:        c0243696 0000000e c024b160 04000000 c03ff850 dfe1a2c0 00000001 c03ff850
Sep 28 04:05:42 unknown kernel: Call Trace:
Sep 28 04:05:42 unknown kernel:  [__kmem_cache_alloc+268/288]__kmem_cache_alloc+0x10c/0x120
Sep 28 04:05:42 unknown kernel:  [ide_intr+0/384]ide_intr+0x0/0x180
Sep 28 04:05:42 unknown kernel:  [request_irq+111/224]request_irq+0x6f/0xe0
Sep 28 04:05:42 unknown kernel:  [init_irq+310/896]init_irq+0x136/0x380
Sep 28 04:05:42 unknown kernel:  [ide_intr+0/384]ide_intr+0x0/0x180
Sep 28 04:05:42 unknown kernel:  [hwif_init+216/608]hwif_init+0xd8/0x260
Sep 28 04:05:42 unknown kernel:  [probe_hwif_init+45/128]probe_hwif_init+0x2d/0x80
Sep 28 04:05:42 unknown kernel:  [ide_setup_pci_device+80/128]ide_setup_pci_device+0x50/0x80
Sep 28 04:05:42 unknown kernel:  [init+58/368]init+0x3a/0x170
Sep 28 04:05:42 unknown kernel:  [init+0/368]init+0x0/0x170
Sep 28 04:05:42 unknown kernel:  [kernel_thread_helper+5/20]kernel_thread_helper+0x5/0x14

2) Kernel compile errors with ACPI disabled.

arch/i386/pci/built-in.o net/built-in.o --end-group -o .tmp_vmlinux arch/i386/kernel/built-in.o: In function `MP_processor_info':
arch/i386/kernel/built-in.o(.text.init+0x4a00): undefined reference to Dprintk' arch/i386/kernel/built-in.o(.text.init+0x4a20): undefined reference to Dprintk' arch/i386/kernel/built-in.o(.text.init+0x4a31): undefined reference to Dprintk' arch/i386/kernel/built-in.o(.text.init+0x4a45): undefined reference to Dprintk' arch/i386/kernel/built-in.o(.text.init+0x4a59): undefined reference to Dprintk' arch/i386/kernel/built-in.o(.text.init+0x4a6d): more undefined references to Dprintk' follow
make: *** [.tmp_vmlinux] Error 1

3) Compile errors with UML:

In file included from sched.c:19:
/usr/src/linux-2.5.39/include/linux/mm.h:165: parse error before "pte_addr_t" /usr/src/linux-2.5.39/include/linux/mm.h:165: warning: no semicolon at end of struct or union /usr/src/linux-2.5.39/include/linux/mm.h:165: warning: no semicolon at end of struct or union /usr/src/linux-2.5.39/include/linux/mm.h:166: warning: type defaults to int' in declaration of pte'

Shawn ;/

It's strange that this ever worked. Does this fix?

@@ -215,6 +215,8 @@ static inline void set_pte(pte_t *pteptr
 	if(pte_present(*pteptr)) *pteptr = pte_mknewprot(*pteptr);
 }
 
+typedef pte_t *pte_addr_t;
+
 /*
  * (pmds are folded into pgds so this doesnt get actually called,
  * but the define is needed for a generic inline function.)

I don't get that error anymore but UML won't compile:

Unless im doing something wrong this is how i've been building UML (in 2.4)

make menuconfig ARCH=um
make modules ARCH=um
make modules_install ARCH=um
make linux ARCH=um

Is this correct?

Shawn.

The 2.5.39 UML doesn't build. I'm working on it.

Jeff

Yes it does, but it is better to extract the definition from the ifdefs that I blindly copied from i386.

Jeff