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(parent: 24cc67d) | patch
powerpc: In HV mode, use HSPRG0 for PACA
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>
Thu, 20 Jan 2011 06:50:21 +0000 (17:50 +1100)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Wed, 20 Apr 2011 01:03:22 +0000 (11:03 +1000)
commit2dd60d79e0202628a47af9812a84d502cc63628c
tree03a114dcb4a8c3b75ec689d372abd331aff5a555tree | snapshot (tar.gz zip)
parent24cc67de62eebbda3ce0c46bdd56582c00dccd03commit | diff
powerpc: In HV mode, use HSPRG0 for PACA

When running in Hypervisor mode (arch 2.06 or later), we store the PACA
in HSPRG0 instead of SPRG1. The architecture specifies that SPRGs may be
lost during a "nap" power management operation (though they aren't
currently on POWER7) and this enables use of SPRG1 by KVM guests.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/include/asm/exception-64s.h diff | blob | blame | history
arch/powerpc/include/asm/reg.h diff | blob | blame | history
arch/powerpc/kernel/entry_64.S diff | blob | blame | history
arch/powerpc/kernel/exceptions-64s.S diff | blob | blame | history
arch/powerpc/kernel/head_64.S diff | blob | blame | history
arch/powerpc/kernel/paca.c diff | blob | blame | history
arch/powerpc/kvm/book3s_rmhandlers.S diff | blob | blame | history