From baf2d5bfbac015b27f4db74feab235e167df0c84 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 12 Jan 2017 19:24:14 +0100 Subject: fw-cfg: support writeable blobs Useful to send guest data back to QEMU. Changes from Laszlo Ersek : - rebase the patch from Michael Tsirkin's original postings at [1] and [2] to the following patches: - loader: Allow a custom AddressSpace when loading ROMs - loader: Add AddressSpace loading support to uImages - loader: fix handling of custom address spaces when adding ROM blobs - reject such writes immediately that would exceed the end of the array, rather than performing a partial write before setting the error bit: see the (len != dma.length) condition - document the write interface [1] http://lists.nongnu.org/archive/html/qemu-devel/2016-02/msg04968.html [2] http://lists.nongnu.org/archive/html/qemu-devel/2016-03/msg02735.html Cc: "Gabriel L. Somlo" Cc: "Michael S. Tsirkin" Cc: Gerd Hoffmann Cc: Igor Mammedov Cc: Michael Walle Cc: Paolo Bonzini Cc: Peter Maydell Cc: Shannon Zhao Cc: qemu-arm@nongnu.org Signed-off-by: Michael S. Tsirkin Signed-off-by: Laszlo Ersek Reviewed-by: Marcel Apfelbaum Acked-by: Gabriel Somlo Tested-by: Gabriel Somlo Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Reviewed-by: Eduardo Habkost --- hw/i386/acpi-build.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'hw/i386') diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 0c8912fd86..a1d781ae42 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -2806,7 +2806,7 @@ static MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state, uint64_t max_size) { return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1, - name, acpi_build_update, build_state, NULL); + name, acpi_build_update, build_state, NULL, true); } static const VMStateDescription vmstate_acpi_build = { @@ -2872,7 +2872,7 @@ void acpi_setup(void) build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size); fw_cfg_add_file_callback(pcms->fw_cfg, ACPI_BUILD_RSDP_FILE, acpi_build_update, build_state, - build_state->rsdp, rsdp_size); + build_state->rsdp, rsdp_size, true); build_state->rsdp_mr = NULL; } else { build_state->rsdp = NULL; -- cgit v1.2.3