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由 Michael Ellerman 提交于
In commit 466921c5 we added a hack to set the paca data_offset to zero so that per-cpu accesses would work on the boot cpu prior to per-cpu areas being setup. This fixed a problem with lockdep touching per-cpu areas very early in boot. However if we combine CONFIG_LOCK_STAT=y with any of the PPC_EARLY_DEBUG options, we can hit the same problem in udbg_early_init(). To avoid that we need to set the data_offset of the boot_paca also. So factor out the fixup logic and call it for both the boot_paca, and "the paca of the boot cpu". Signed-off-by: NMichael Ellerman <michael@ellerman.id.au> Tested-by: NGeoff Levand <geoff@infradead.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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