[PARISC] Fix kernel panic in check_ivt
check_ivt had some seriously broken code wrt function pointers on parisc64. Instead of referencing the hpmc code via a function pointer, export symbols and reference it as a const array. Thanks to jda for pointing out the broken 64-bit func ptr handling. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
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@ -295,8 +295,5 @@ os_hpmc_6:
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b .
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nop
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ENDPROC(os_hpmc)
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/* this label used to compute os_hpmc checksum */
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ENTRY(os_hpmc_end)
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ENTRY(os_hpmc_end) /* this label used to compute os_hpmc checksum */
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nop
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@ -802,13 +802,14 @@ void handle_interruption(int code, struct pt_regs *regs)
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int __init check_ivt(void *iva)
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{
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extern const u32 os_hpmc[];
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extern const u32 os_hpmc_end[];
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int i;
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u32 check = 0;
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u32 *ivap;
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u32 *hpmcp;
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u32 length;
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extern void os_hpmc(void);
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extern void os_hpmc_end(void);
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if (strcmp((char *)iva, "cows can fly"))
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return -1;
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@ -820,7 +821,7 @@ int __init check_ivt(void *iva)
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/* Compute Checksum for HPMC handler */
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length = (u32)((unsigned long)os_hpmc_end - (unsigned long)os_hpmc);
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length = os_hpmc_end - os_hpmc;
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ivap[7] = length;
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hpmcp = (u32 *)os_hpmc;
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