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RISC-V: Use Linux logical CPU number instead of hartid

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Setup the cpu_logical_map during boot. Moreover, every SBI call
and PLIC context are based on the physical hartid. Use the logical
CPU to hartid mapping to pass correct hartid to respective functions.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This commit is contained in:
Atish Patra 2018-10-02 12:15:05 -07:00 • committed by Palmer Dabbelt
parent 6825c7a80f
commit f99fb607fb
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8 changed files with 71 additions and 32 deletions
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6
arch/riscv/kernel/setup.c
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@ -81,11 +81,17 @@ EXPORT_SYMBOL(empty_zero_page);
/* The lucky hart to first increment this variable will boot the other cores */
atomic_t hart_lottery;
unsigned long boot_cpu_hartid;
unsigned long __cpuid_to_hartid_map[NR_CPUS] = {
[0 ... NR_CPUS-1] = INVALID_HARTID
};
void __init smp_setup_processor_id(void)
{
cpuid_to_hartid_map(0) = boot_cpu_hartid;
}
#ifdef CONFIG_BLK_DEV_INITRD
static void __init setup_initrd(void)
{