add_setup_data() is used to add an instance to the single linked list
of setup_data structure.
Signed-off-by: WANG Chao <chaowang at redhat.com>
---
kexec/arch/i386/x86-linux-setup.c | 26 ++++++++++++++++++++------
1 file changed, 20 insertions(+), 6 deletions(-)
diff --git a/kexec/arch/i386/x86-linux-setup.c b/kexec/arch/i386/x86-linux-setup.c
index e04e45d..8ed36cc 100644
--- a/kexec/arch/i386/x86-linux-setup.c
+++ b/kexec/arch/i386/x86-linux-setup.c
@@ -603,6 +603,22 @@ struct efi_info {
};
/*
+ * Add another instance to single linked list of struct setup_data.
+ * Please refer to kernel Documentation/x86/boot.txt for more details
+ * about setup_data structure.
+ */
+static void add_setup_data(struct kexec_info *info,
+ struct x86_linux_param_header *real_mode,
+ struct setup_data *sd)
+{
+ int sdsize = sizeof(struct setup_data) + sd->len;
+
+ sd->next = real_mode->setup_data;
+ real_mode->setup_data = add_buffer(info, sd, sdsize, sdsize, getpagesize(),
+ 0x100000, ULONG_MAX, INT_MAX);
+}
+
+/*
* setup_efi_data will collect below data and pass them to 2nd kernel.
* 1) SMBIOS, fw_vendor, runtime, config_table, they are passed via x86
* setup_data.
@@ -611,11 +627,11 @@ struct efi_info {
static int setup_efi_data(struct kexec_info *info,
struct x86_linux_param_header *real_mode)
{
- int64_t setup_data_paddr, memmap_paddr;
+ int64_t memmap_paddr;
struct setup_data *sd;
struct efi_setup_data *esd;
struct efi_mem_descriptor *maps;
- int nr_maps, size, sdsize, ret = 0;
+ int nr_maps, size, ret = 0;
struct efi_info *ei = (struct efi_info *)real_mode->efi_info;
ret = access("/sys/firmware/efi/systab", F_OK);
@@ -648,10 +664,8 @@ static int setup_efi_data(struct kexec_info *info,
sd->len = sizeof(*esd);
memcpy(sd->data, esd, sizeof(*esd));
free(esd);
- sdsize = sd->len + sizeof(struct setup_data);
- setup_data_paddr = add_buffer(info, sd, sdsize, sdsize, getpagesize(),
- 0x100000, ULONG_MAX, INT_MAX);
- real_mode->setup_data = setup_data_paddr;
+
+ add_setup_data(info, real_mode, sd);
size = nr_maps * sizeof(struct efi_mem_descriptor);
memmap_paddr = add_buffer(info, maps, size, size, getpagesize(),
--
1.8.5.3
