From: Jan Beulich Date: Tue, 26 Nov 2024 10:24:56 +0000 (+0100) Subject: libxl/ACPI: don't hard-code guest page size X-Git-Tag: 4.20.0-rc1~127 X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=4e0b1adff0c14919c64fb5626d47650ba4eb4ce7;p=xen.git libxl/ACPI: don't hard-code guest page size We have libxl_ctxt.page_size for this purpose; use it to eliminate a latent buffer overrun. Fixes: 14c0d328da2b ("libxl/acpi: Build ACPI tables for HVMlite guests") Signed-off-by: Jan Beulich Reviewed-by: Anthony PERARD --- diff --git a/tools/libs/light/libxl_x86_acpi.c b/tools/libs/light/libxl_x86_acpi.c index 2574ce2553..378524aeef 100644 --- a/tools/libs/light/libxl_x86_acpi.c +++ b/tools/libs/light/libxl_x86_acpi.c @@ -218,7 +218,7 @@ int libxl__dom_load_acpi(libxl__gc *gc, dom->acpi_modules[0].guest_addr_out = 0x100000 - 64; dom->acpi_modules[1].data = (void *)config.infop; - dom->acpi_modules[1].length = 4096; + dom->acpi_modules[1].length = libxl_ctxt.page_size; dom->acpi_modules[1].guest_addr_out = ACPI_INFO_PHYSICAL_ADDRESS; dom->acpi_modules[2].data = libxl_ctxt.buf;