Searched hist:cba313da (Results 1 – 2 of 2) sorted by relevance
/openbmc/linux/arch/powerpc/platforms/powernv/ |
H A D | smp.c | cba313da Mon Dec 05 13:35:32 CST 2011 Paul Mackerras <paulus@samba.org> powerpc/powernv: Fix problems in onlining CPUs
At present, on the powernv platform, if you off-line a CPU that was online, and then try to on-line it again, the kernel generates a warning message "OPAL Error -1 starting CPU n". Furthermore, if the CPU is a secondary thread that was used by KVM while it was off-line, the CPU fails to come online.
The first problem is fixed by only calling OPAL to start the CPU the first time it is on-lined, as indicated by the cpu_start field of its PACA being zero. The second problem is fixed by restoring the cpu_start field to 1 instead of 0 when using the CPU within KVM.
Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> cba313da Mon Dec 05 13:35:32 CST 2011 Paul Mackerras <paulus@samba.org> powerpc/powernv: Fix problems in onlining CPUs At present, on the powernv platform, if you off-line a CPU that was online, and then try to on-line it again, the kernel generates a warning message "OPAL Error -1 starting CPU n". Furthermore, if the CPU is a secondary thread that was used by KVM while it was off-line, the CPU fails to come online. The first problem is fixed by only calling OPAL to start the CPU the first time it is on-lined, as indicated by the cpu_start field of its PACA being zero. The second problem is fixed by restoring the cpu_start field to 1 instead of 0 when using the CPU within KVM. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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/openbmc/linux/arch/powerpc/kernel/ |
H A D | exceptions-64s.S | cba313da Mon Dec 05 13:35:32 CST 2011 Paul Mackerras <paulus@samba.org> powerpc/powernv: Fix problems in onlining CPUs
At present, on the powernv platform, if you off-line a CPU that was online, and then try to on-line it again, the kernel generates a warning message "OPAL Error -1 starting CPU n". Furthermore, if the CPU is a secondary thread that was used by KVM while it was off-line, the CPU fails to come online.
The first problem is fixed by only calling OPAL to start the CPU the first time it is on-lined, as indicated by the cpu_start field of its PACA being zero. The second problem is fixed by restoring the cpu_start field to 1 instead of 0 when using the CPU within KVM.
Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> cba313da Mon Dec 05 13:35:32 CST 2011 Paul Mackerras <paulus@samba.org> powerpc/powernv: Fix problems in onlining CPUs At present, on the powernv platform, if you off-line a CPU that was online, and then try to on-line it again, the kernel generates a warning message "OPAL Error -1 starting CPU n". Furthermore, if the CPU is a secondary thread that was used by KVM while it was off-line, the CPU fails to come online. The first problem is fixed by only calling OPAL to start the CPU the first time it is on-lined, as indicated by the cpu_start field of its PACA being zero. The second problem is fixed by restoring the cpu_start field to 1 instead of 0 when using the CPU within KVM. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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