From: Suzuki K Poulose <suzuki.poulose@xxxxxxx> GICv3-ITS is emulated by the host and thus we should allocate shared pages for access by the host. Make sure the allocations are shared. Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx> Signed-off-by: Joey Gouly <joey.gouly@xxxxxxx> --- lib/arm/gic-v3.c | 6 ++++-- lib/arm64/gic-v3-its.c | 6 +++--- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/lib/arm/gic-v3.c b/lib/arm/gic-v3.c index 2f7870ab..813cd5a6 100644 --- a/lib/arm/gic-v3.c +++ b/lib/arm/gic-v3.c @@ -171,7 +171,9 @@ void gicv3_lpi_alloc_tables(void) u64 prop_val; int cpu; - gicv3_data.lpi_prop = alloc_pages(order); + assert(gicv3_redist_base()); + + gicv3_data.lpi_prop = alloc_pages_shared(order); /* ID bits = 13, ie. up to 14b LPI INTID */ prop_val = (u64)(virt_to_phys(gicv3_data.lpi_prop)) | 13; @@ -186,7 +188,7 @@ void gicv3_lpi_alloc_tables(void) writeq(prop_val, ptr + GICR_PROPBASER); - gicv3_data.lpi_pend[cpu] = alloc_pages(order); + gicv3_data.lpi_pend[cpu] = alloc_pages_shared(order); pend_val = (u64)(virt_to_phys(gicv3_data.lpi_pend[cpu])); writeq(pend_val, ptr + GICR_PENDBASER); } diff --git a/lib/arm64/gic-v3-its.c b/lib/arm64/gic-v3-its.c index 2c69cfda..07dbeb81 100644 --- a/lib/arm64/gic-v3-its.c +++ b/lib/arm64/gic-v3-its.c @@ -54,7 +54,7 @@ static void its_baser_alloc_table(struct its_baser *baser, size_t size) void *reg_addr = gicv3_its_base() + GITS_BASER + baser->index * 8; u64 val = readq(reg_addr); - baser->table_addr = alloc_pages(order); + baser->table_addr = alloc_pages_shared(order); val |= virt_to_phys(baser->table_addr) | GITS_BASER_VALID; @@ -70,7 +70,7 @@ static void its_cmd_queue_init(void) unsigned long order = get_order(SZ_64K >> PAGE_SHIFT); u64 cbaser; - its_data.cmd_base = alloc_pages(order); + its_data.cmd_base = alloc_pages_shared(order); cbaser = virt_to_phys(its_data.cmd_base) | (SZ_64K / SZ_4K - 1) | GITS_CBASER_VALID; @@ -123,7 +123,7 @@ struct its_device *its_create_device(u32 device_id, int nr_ites) new->nr_ites = nr_ites; n = (its_data.typer.ite_size * nr_ites) >> PAGE_SHIFT; - new->itt = alloc_pages(get_order(n)); + new->itt = alloc_pages_shared(get_order(n)); its_data.nr_devices++; return new; -- 2.17.1
