[Xen-devel] [PATCH v3 13/15] xen/arm: vgic-v2: GICD_I{S, C}PENDR* are only word-accessible

[Julien Grall <julien.grall@xxxxxxxxxx>]

Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>

---
    This patch is candidate for backporting to Xen 4.4 and Xen 4.5.

    Although, this patch won't apply directly to Xen 4.4.

    Changes in v3:
        - Add Ian's ack

    Changes in v2:
        - Patch added
---
 xen/arch/arm/vgic-v2.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/xen/arch/arm/vgic-v2.c b/xen/arch/arm/vgic-v2.c
index e7cdf9e..1a02541 100644
--- a/xen/arch/arm/vgic-v2.c
+++ b/xen/arch/arm/vgic-v2.c
@@ -95,7 +95,7 @@ static int vgic_v2_distr_mmio_read(struct vcpu *v, 
mmio_info_t *info)
         return 1;
 
     case GICD_ISPENDR ... GICD_ISPENDRN:
-        if ( dabt.size != DABT_BYTE && dabt.size != DABT_WORD ) goto bad_width;
+        if ( dabt.size != DABT_WORD ) goto bad_width;
         rank = vgic_rank_offset(v, 1, gicd_reg - GICD_ISPENDR, DABT_WORD);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank, flags);
@@ -104,8 +104,8 @@ static int vgic_v2_distr_mmio_read(struct vcpu *v, 
mmio_info_t *info)
         return 1;
 
     case GICD_ICPENDR ... GICD_ICPENDRN:
-        if ( dabt.size != DABT_BYTE && dabt.size != DABT_WORD ) goto bad_width;
-        rank = vgic_rank_offset(v, 1, gicd_reg - GICD_ICPENDR, DABT_WORD);
+        if ( dabt.size != DABT_WORD ) goto bad_width;
+        rank = vgic_rank_offset(v, 0, gicd_reg - GICD_ICPENDR, DABT_WORD);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank, flags);
         *r = vgic_byte_read(rank->ipend, dabt.sign, gicd_reg);
@@ -331,17 +331,17 @@ static int vgic_v2_distr_mmio_write(struct vcpu *v, 
mmio_info_t *info)
         return 1;
 
     case GICD_ISPENDR ... GICD_ISPENDRN:
-        if ( dabt.size != DABT_BYTE && dabt.size != DABT_WORD ) goto bad_width;
+        if ( dabt.size != DABT_WORD ) goto bad_width;
         printk(XENLOG_G_ERR
-               "%pv: vGICD: unhandled %s write %#"PRIregister" to ISPENDR%d\n",
-               v, dabt.size ? "word" : "byte", *r, gicd_reg - GICD_ISPENDR);
+               "%pv: vGICD: unhandled word write %#"PRIregister" to 
ISPENDR%d\n",
+               v, *r, gicd_reg - GICD_ISPENDR);
         return 0;
 
     case GICD_ICPENDR ... GICD_ICPENDRN:
-        if ( dabt.size != DABT_BYTE && dabt.size != DABT_WORD ) goto bad_width;
+        if ( dabt.size != DABT_WORD ) goto bad_width;
         printk(XENLOG_G_ERR
-               "%pv: vGICD: unhandled %s write %#"PRIregister" to ICPENDR%d\n",
-               v, dabt.size ? "word" : "byte", *r, gicd_reg - GICD_ICPENDR);
+               "%pv: vGICD: unhandled word write %#"PRIregister" to 
ICPENDR%d\n",
+               v, *r, gicd_reg - GICD_ICPENDR);
         return 0;
 
     case GICD_ISACTIVER ... GICD_ISACTIVERN:
-- 
2.1.4


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