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spapr_hcall: Fix little-endian resource handling in H_SET_MODE

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This changes resource code definitions to ones used in the host kernel.

This fixes H_SET_MODE_RESOURCE_LE (switch between big endian and
little endian) to sync registers from KVM before changing LPCR value.

This adds a set_spr() helper to update an SPR in a CPU's context to avoid
possible races and makes use of it to change LPCR.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Alexey Kardashevskiy 2014-03-07 15:37:40 +11:00 • committed by Andreas Färber
parent df99d30d4e
commit a46622fd07
2 changed files with 40 additions and 10 deletions
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9
include/hw/ppc/spapr.h
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@ -153,8 +153,13 @@ typedef struct sPAPREnvironment {
#define H_PP1 (1ULL<<(63-62))
#define H_PP2 (1ULL<<(63-63))
/* H_SET_MODE flags */
#define H_SET_MODE_ENDIAN 4
/* Values for 2nd argument to H_SET_MODE */
#define H_SET_MODE_RESOURCE_SET_CIABR 1
#define H_SET_MODE_RESOURCE_SET_DAWR 2
#define H_SET_MODE_RESOURCE_ADDR_TRANS_MODE 3
#define H_SET_MODE_RESOURCE_LE 4
/* Flags for H_SET_MODE_RESOURCE_LE */
#define H_SET_MODE_ENDIAN_BIG 0
#define H_SET_MODE_ENDIAN_LITTLE 1