[Xen-changelog] [xen master] ARM: GIC: ITS: remove no longer needed VCPU ID in host LPI entry

[patchbot@xxxxxxx]

commit 41aca705eda86f0c712f4ddc48833e4da16ff33e
Author:     Andre Przywara <andre.przywara@xxxxxxx>
AuthorDate: Wed Jun 7 16:28:37 2017 +0100
Commit:     Stefano Stabellini <sstabellini@xxxxxxxxxx>
CommitDate: Wed Jun 14 11:38:37 2017 -0700

    ARM: GIC: ITS: remove no longer needed VCPU ID in host LPI entry
    
    To get easy access to the VCPU a forwarded LPI interrupt should be
    injected to, so far we stored the VCPU ID in the host LPI entry.
    However this creates a redundancy, since we keep the target VCPU in
    the struct pending_irq already, which we can easily look up given the
    domain and the virtual LPI number.
    Apart from removing the redundancy this avoids having to update this
    information later and keeping it in sync in a race-free fashion.
    Since this information has not been used that, this patch actually does
    not change anything, it just removes the declaration and initialization.
    
    Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx>
    Acked-by: Julien Grall <julien.grall@xxxxxxx>
    Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/arch/arm/gic-v3-lpi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/xen/arch/arm/gic-v3-lpi.c b/xen/arch/arm/gic-v3-lpi.c
index 292f2d0..dbaf45a 100644
--- a/xen/arch/arm/gic-v3-lpi.c
+++ b/xen/arch/arm/gic-v3-lpi.c
@@ -47,7 +47,7 @@ union host_lpi {
     struct {
         uint32_t virt_lpi;
         uint16_t dom_id;
-        uint16_t vcpu_id;
+        uint16_t pad;
     };
 };
 
@@ -417,7 +417,6 @@ int gicv3_allocate_host_lpi_block(struct domain *d, 
uint32_t *first_lpi)
          */
         hlpi.virt_lpi = INVALID_LPI;
         hlpi.dom_id = d->domain_id;
-        hlpi.vcpu_id = INVALID_VCPU_ID;
         write_u64_atomic(&lpi_data.host_lpis[chunk][lpi_idx + i].data,
                          hlpi.data);
 
--
generated by git-patchbot for /home/xen/git/xen.git#master

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