35060b6a9a
In arch/i386/cpu/common.c there is: cpu_devs[X86_VENDOR_INTEL] cpu_devs[X86_VENDOR_CYRIX] cpu_devs[X86_VENDOR_AMD] ... They are all filled with data early. The data (struct) got set to NULL for all, but Intel in different late_initcall (exit_cpu_vendor) calls. I don't see what sense this makes at all, maybe something that got forgotten with the HOTPLUG_CPU extenstions? Please check/review whether initdata, cpuinitdata is still ok and this still works with HOTPLUG_CPU and without, it should... Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Andi Kleen <ak@suse.de> Cc: davej@redhat.com
61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/string.h>
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#include <asm/processor.h>
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#include "cpu.h"
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/*
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* Detect a NexGen CPU running without BIOS hypercode new enough
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* to have CPUID. (Thanks to Herbert Oppmann)
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*/
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static int __cpuinit deep_magic_nexgen_probe(void)
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{
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int ret;
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__asm__ __volatile__ (
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" movw $0x5555, %%ax\n"
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" xorw %%dx,%%dx\n"
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" movw $2, %%cx\n"
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" divw %%cx\n"
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" movl $0, %%eax\n"
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" jnz 1f\n"
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" movl $1, %%eax\n"
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"1:\n"
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: "=a" (ret) : : "cx", "dx" );
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return ret;
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}
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static void __cpuinit init_nexgen(struct cpuinfo_x86 * c)
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{
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c->x86_cache_size = 256; /* A few had 1 MB... */
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}
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static void __cpuinit nexgen_identify(struct cpuinfo_x86 * c)
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{
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/* Detect NexGen with old hypercode */
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if ( deep_magic_nexgen_probe() ) {
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strcpy(c->x86_vendor_id, "NexGenDriven");
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}
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}
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static struct cpu_dev nexgen_cpu_dev __cpuinitdata = {
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.c_vendor = "Nexgen",
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.c_ident = { "NexGenDriven" },
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.c_models = {
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{ .vendor = X86_VENDOR_NEXGEN,
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.family = 5,
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.model_names = { [1] = "Nx586" }
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},
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},
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.c_init = init_nexgen,
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.c_identify = nexgen_identify,
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};
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int __init nexgen_init_cpu(void)
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{
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cpu_devs[X86_VENDOR_NEXGEN] = &nexgen_cpu_dev;
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return 0;
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}
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