sgi-xp: xpc needs to pass the physical address, not virtual

Impact: fix crash

xpc needs to pass the physical address, not virtual.

Testing uncovered this problem.  The virtual address happens to work
most of the time due to the way bios was masking off the node bits.
Passing the physical address makes it work all of the time.

Signed-off-by: Russ Anderson <rja@sgi.com>
Acked-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

3 files changed, 6 insertions, 8 deletions

diff --git a/arch/x86/include/asm/uv/bios.h b/arch/x86/include/asm/uv/bios.h
index da1c4e8e78fc..7ed17ff502b9 100644
--- a/arch/x86/include/asm/uv/bios.h
+++ b/arch/x86/include/asm/uv/bios.h
@@ -100,7 +100,7 @@ extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64);
 
 extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *);
 extern s64 uv_bios_freq_base(u64, u64 *);
-extern int uv_bios_mq_watchlist_alloc(int, void *, unsigned int,
+extern int uv_bios_mq_watchlist_alloc(int, unsigned long, unsigned int,
                                         unsigned long *);
 extern int uv_bios_mq_watchlist_free(int, int);
 extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect);
diff --git a/arch/x86/kernel/bios_uv.c b/arch/x86/kernel/bios_uv.c
index d22d0f1bbea0..2a0a2a3cac26 100644
--- a/arch/x86/kernel/bios_uv.c
+++ b/arch/x86/kernel/bios_uv.c
@@ -101,15 +101,13 @@ s64 uv_bios_get_sn_info(int fc, int *uvtype, long *partid, long *coher,
 }
 
 int
-uv_bios_mq_watchlist_alloc(int blade, void *mq, unsigned int mq_size,
+uv_bios_mq_watchlist_alloc(int blade, unsigned long addr, unsigned int mq_size,
                            unsigned long *intr_mmr_offset)
 {
         union uv_watchlist_u size_blade;
-        unsigned long addr;
         u64 watchlist;
         s64 ret;
 
-        addr = (unsigned long)mq;
         size_blade.size = mq_size;
         size_blade.blade = blade;
 
diff --git a/drivers/misc/sgi-xp/xpc_uv.c b/drivers/misc/sgi-xp/xpc_uv.c
index 684b2dd17583..91a55b1b1037 100644
--- a/drivers/misc/sgi-xp/xpc_uv.c
+++ b/drivers/misc/sgi-xp/xpc_uv.c
@@ -119,16 +119,16 @@ xpc_gru_mq_watchlist_alloc_uv(struct xpc_gru_mq_uv *mq)
         int ret;
 
 #if defined CONFIG_X86_64
-        ret = uv_bios_mq_watchlist_alloc(mq->mmr_blade, mq->address, mq->order,
-                                         &mq->mmr_offset);
+        ret = uv_bios_mq_watchlist_alloc(mq->mmr_blade, uv_gpa(mq->address),
+                                         mq->order, &mq->mmr_offset);
         if (ret < 0) {
                 dev_err(xpc_part, "uv_bios_mq_watchlist_alloc() failed, "
                         "ret=%d\n", ret);
                 return ret;
         }
 #elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
-        ret = sn_mq_watchlist_alloc(mq->mmr_blade, mq->address, mq->order,
-                                    &mq->mmr_offset);
+        ret = sn_mq_watchlist_alloc(mq->mmr_blade, uv_gpa(mq->address),
+                                    mq->order, &mq->mmr_offset);
         if (ret < 0) {
                 dev_err(xpc_part, "sn_mq_watchlist_alloc() failed, ret=%d\n",
                         ret);