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authorDavid Gibson <david@gibson.dropbear.id.au>2005-11-24 16:34:45 +1100
committerPaul Mackerras <paulus@samba.org>2006-01-09 14:50:32 +1100
commit1888e7b51c0cb5db49911b59cb758ad2c7a530f2 (patch)
treedab7d7cbb895658845dce88f1b2bacc0f7238e50 /arch/powerpc
parent456752f7505ef8f580ffd157558e661da2767d99 (diff)
[PATCH] powerpc: Remove ItLpRegSave area from the paca
On iSeries, the paca contains, amongst other things an ItLpRegSave structure used by the hypervisor to save registers. The hypervisor locates this area through a pointer at the beginning of the paca, so the structure itself can be located elsewhere. This patch moves the reg_save area out into its own array. This reduces the amount of iSeries specific gunk which is visible to general powerpc code via paca.h Built and booted on POWER5 LPAR and iSeries RS64. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/paca.c10
-rw-r--r--arch/powerpc/platforms/iseries/lpardata.c7
2 files changed, 10 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index a7b68f911eb..25420406c8c 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -17,6 +17,7 @@
#include <asm/page.h>
#include <asm/lppaca.h>
#include <asm/iseries/it_lp_queue.h>
+#include <asm/iseries/it_lp_reg_save.h>
#include <asm/paca.h>
@@ -26,8 +27,7 @@ extern unsigned long __toc_start;
/* The Paca is an array with one entry per processor. Each contains an
* lppaca, which contains the information shared between the
- * hypervisor and Linux. Each also contains an ItLpRegSave area which
- * is used by the hypervisor to save registers.
+ * hypervisor and Linux.
* On systems with hardware multi-threading, there are two threads
* per processor. The Paca array must contain an entry for each thread.
* The VPD Areas will give a max logical processors = 2 * max physical
@@ -57,11 +57,7 @@ extern unsigned long __toc_start;
#ifdef CONFIG_PPC_ISERIES
#define PACA_INIT_ISERIES(number) \
.lppaca_ptr = &paca[number].lppaca, \
- .reg_save_ptr = &paca[number].reg_save, \
- .reg_save = { \
- .xDesc = 0xd397d9e2, /* "LpRS" */ \
- .xSize = sizeof(struct ItLpRegSave) \
- }
+ .reg_save_ptr = &iseries_reg_save[number],
#define PACA_INIT(number) \
{ \
diff --git a/arch/powerpc/platforms/iseries/lpardata.c b/arch/powerpc/platforms/iseries/lpardata.c
index bb8c91537f3..ea72385aaf0 100644
--- a/arch/powerpc/platforms/iseries/lpardata.c
+++ b/arch/powerpc/platforms/iseries/lpardata.c
@@ -225,3 +225,10 @@ struct ItVpdAreas itVpdAreas = {
0,0
}
};
+
+struct ItLpRegSave iseries_reg_save[] = {
+ [0 ... (NR_CPUS-1)] = {
+ .xDesc = 0xd397d9e2, /* "LpRS" */
+ .xSize = sizeof(struct ItLpRegSave),
+ },
+};