From: ben@skyportsystems.com
To: qemu-devel@nongnu.org
Cc: Ben Warren <ben@skyportsystems.com>
Subject: [Qemu-devel] [PATCH v2 2/6] ACPI: Add a function for building named qword entries
Date: Mon, 16 Jan 2017 11:20:54 -0800 [thread overview]
Message-ID: <555bb80fd172974474a90f832b76f63bb98c512b.1484594095.git.ben@skyportsystems.com> (raw)
In-Reply-To: <cover.1484593565.git.ben@skyportsystems.com>
In-Reply-To: <cover.1484594095.git.ben@skyportsystems.com>
From: Ben Warren <ben@skyportsystems.com>
Signed-off-by: Ben Warren <ben@skyportsystems.com>
---
hw/acpi/aml-build.c | 28 ++++++++++++++++++++++++++++
include/hw/acpi/aml-build.h | 4 ++++
2 files changed, 32 insertions(+)
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index b2a1e40..dc4edc2 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -285,6 +285,34 @@ build_append_named_dword(GArray *array, const char *name_format, ...)
return offset;
}
+/*
+ * Build NAME(XXXX, 0x00000000) where 0x00000000 is encoded as a qword,
+ * and return the offset to 0x00000000 for runtime patching.
+ *
+ * Warning: runtime patching is best avoided. Only use this as
+ * a replacement for DataTableRegion (for guests that don't
+ * support it).
+ */
+int
+build_append_named_qword(GArray *array, const char *name_format, ...)
+{
+ int offset;
+ va_list ap;
+
+ build_append_byte(array, 0x08); /* NameOp */
+ va_start(ap, name_format);
+ build_append_namestringv(array, name_format, ap);
+ va_end(ap);
+
+ build_append_byte(array, 0x0E); /* QWordPrefix */
+
+ offset = array->len;
+ build_append_int_noprefix(array, 0x00000000, 8);
+ assert(array->len == offset + 8);
+
+ return offset;
+}
+
static GPtrArray *alloc_list;
static Aml *aml_alloc(void)
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 559326c..dbf63cf 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -385,6 +385,10 @@ int
build_append_named_dword(GArray *array, const char *name_format, ...)
GCC_FMT_ATTR(2, 3);
+int
+build_append_named_qword(GArray *array, const char *name_format, ...)
+GCC_FMT_ATTR(2, 3);
+
void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
uint64_t len, int node, MemoryAffinityFlags flags);
--
2.7.4
next prev parent reply other threads:[~2017-01-16 19:21 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-16 19:20 [Qemu-devel] [PATCH v2 0/6] Add support for VM Generation ID ben
[not found] ` <cover.1484594095.git.ben@skyportsystems.com>
2017-01-16 19:20 ` [Qemu-devel] [PATCH v2 1/6] docs: vm generation id device's description ben
2017-01-16 19:51 ` Eric Blake
2017-01-16 20:08 ` Ben Warren
2017-01-16 21:20 ` Eric Blake
2017-01-16 19:20 ` ben [this message]
2017-01-16 19:20 ` [Qemu-devel] [PATCH v2 3/6] ACPI: Add Virtual Machine Generation ID support ben
2017-01-17 13:00 ` Igor Mammedov
2017-01-17 13:18 ` Laszlo Ersek
2017-01-17 14:41 ` Michael S. Tsirkin
2017-01-17 16:37 ` Laszlo Ersek
2017-01-18 0:23 ` Ben Warren
2017-01-16 19:20 ` [Qemu-devel] [PATCH v2 4/6] qmp/hmp: add query-vm-generation-id and 'info vm-generation-id' commands ben
2017-01-16 19:20 ` [Qemu-devel] [PATCH v2 5/6] qmp/hmp: add set-vm-generation-id commands ben
2017-01-18 8:55 ` Igor Mammedov
2017-01-18 22:14 ` Ben Warren
2017-01-16 19:20 ` [Qemu-devel] [PATCH v2 6/6] PC: Support dynamic sysbus on pc_i440fx ben
2017-01-18 8:46 ` Igor Mammedov
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