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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v4 03/12] x86: Replace arch-specific boot_module with common one
These types resemble each other very closely in layout and intent,
and with "struct boot_module" already in common code it makes perfect
sense to merge them. In order to do so, add an arch-specific area for
x86-specific tidbits, and rename identical fields with conflicting
names.
No functional change intended.
Signed-off-by: Alejandro Vallejo <agarciav@xxxxxxx>
---
xen/arch/x86/cpu/microcode/core.c | 7 ++--
xen/arch/x86/hvm/dom0_build.c | 6 ++--
xen/arch/x86/include/asm/bootfdt.h | 50 ++++++++++++++++++++++++++
xen/arch/x86/include/asm/bootinfo.h | 56 +++--------------------------
xen/arch/x86/pv/dom0_build.c | 4 +--
xen/arch/x86/setup.c | 43 +++++++++++-----------
xen/include/xen/bootfdt.h | 8 +++++
xen/xsm/xsm_policy.c | 2 +-
8 files changed, 93 insertions(+), 83 deletions(-)
create mode 100644 xen/arch/x86/include/asm/bootfdt.h
diff --git a/xen/arch/x86/cpu/microcode/core.c
b/xen/arch/x86/cpu/microcode/core.c
index 34a94cd25b..816e9bfe40 100644
--- a/xen/arch/x86/cpu/microcode/core.c
+++ b/xen/arch/x86/cpu/microcode/core.c
@@ -764,8 +764,7 @@ static int __init early_microcode_load(struct boot_info *bi)
struct cpio_data cd;
/* Search anything unclaimed or likely to be a CPIO archive. */
- if ( bm->type != BOOTMOD_UNKNOWN &&
- bm->type != BOOTMOD_RAMDISK )
+ if ( bm->kind != BOOTMOD_UNKNOWN && bm->kind != BOOTMOD_RAMDISK )
continue;
size = bm->size;
@@ -815,12 +814,12 @@ static int __init early_microcode_load(struct boot_info
*bi)
return -ENODEV;
}
- if ( bi->mods[idx].type != BOOTMOD_UNKNOWN )
+ if ( bi->mods[idx].kind != BOOTMOD_UNKNOWN )
{
printk(XENLOG_WARNING "Microcode: Chosen module %d already
used\n", idx);
return -ENODEV;
}
- bi->mods[idx].type = BOOTMOD_MICROCODE;
+ bi->mods[idx].kind = BOOTMOD_MICROCODE;
size = bi->mods[idx].size;
data = bootstrap_map_bm(&bi->mods[idx]);
diff --git a/xen/arch/x86/hvm/dom0_build.c b/xen/arch/x86/hvm/dom0_build.c
index a038e58c11..2bb8ef355c 100644
--- a/xen/arch/x86/hvm/dom0_build.c
+++ b/xen/arch/x86/hvm/dom0_build.c
@@ -650,7 +650,7 @@ static int __init pvh_load_kernel(
struct boot_module *image = bd->kernel;
struct boot_module *initrd = bd->module;
void *image_base = bootstrap_map_bm(image);
- void *image_start = image_base + image->headroom;
+ void *image_start = image_base + image->arch.headroom;
unsigned long image_len = image->size;
unsigned long initrd_len = initrd ? initrd->size : 0;
size_t cmdline_len = bd->cmdline ? strlen(bd->cmdline) + 1 : 0;
@@ -721,9 +721,9 @@ static int __init pvh_load_kernel(
{
size_t initrd_space = elf_round_up(&elf, initrd_len);
- if ( initrd->cmdline_pa )
+ if ( initrd->arch.cmdline_pa )
{
- initrd_cmdline = __va(initrd->cmdline_pa);
+ initrd_cmdline = __va(initrd->arch.cmdline_pa);
if ( !*initrd_cmdline )
initrd_cmdline = NULL;
}
diff --git a/xen/arch/x86/include/asm/bootfdt.h
b/xen/arch/x86/include/asm/bootfdt.h
new file mode 100644
index 0000000000..a4c4bf30b9
--- /dev/null
+++ b/xen/arch/x86/include/asm/bootfdt.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef X86_BOOTFDT_H
+#define X86_BOOTFDT_H
+
+#include <xen/types.h>
+
+struct arch_boot_module
+{
+ /*
+ * Module State Flags:
+ * relocated: indicates module has been relocated in memory.
+ * released: indicates module's pages have been freed.
+ */
+ bool relocated:1;
+ bool released:1;
+
+ /*
+ * A boot module may need decompressing by Xen. Headroom is an estimate of
+ * the additional space required to decompress the module.
+ *
+ * Headroom is accounted for at the start of the module. Decompressing is
+ * done in-place with input=start, output=start-headroom, expecting the
+ * pointers to become equal (give or take some rounding) when decompression
+ * is complete.
+ *
+ * Memory layout at boot:
+ *
+ * start ----+
+ * v
+ * |<-----headroom------>|<------size------->|
+ * +-------------------+
+ * | Compressed Module |
+ * +---------------------+-------------------+
+ * | Decompressed Module |
+ * +-----------------------------------------+
+ */
+ unsigned long headroom;
+ paddr_t cmdline_pa;
+};
+
+#endif /* X86_BOOTFDT_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/arch/x86/include/asm/bootinfo.h
b/xen/arch/x86/include/asm/bootinfo.h
index 3afc214c17..d33b100e04 100644
--- a/xen/arch/x86/include/asm/bootinfo.h
+++ b/xen/arch/x86/include/asm/bootinfo.h
@@ -8,6 +8,7 @@
#ifndef X86_BOOTINFO_H
#define X86_BOOTINFO_H
+#include <xen/bootfdt.h>
#include <xen/init.h>
#include <xen/multiboot.h>
#include <xen/types.h>
@@ -19,55 +20,6 @@
/* Max number of boot domains that Xen can construct */
#define MAX_NR_BOOTDOMS 1
-/* Boot module binary type / purpose */
-enum bootmod_type {
- BOOTMOD_UNKNOWN,
- BOOTMOD_XEN,
- BOOTMOD_KERNEL,
- BOOTMOD_RAMDISK,
- BOOTMOD_MICROCODE,
- BOOTMOD_XSM_POLICY,
-};
-
-struct boot_module {
- enum bootmod_type type;
-
- /*
- * Module State Flags:
- * relocated: indicates module has been relocated in memory.
- * released: indicates module's pages have been freed.
- */
- bool relocated:1;
- bool released:1;
-
- /*
- * A boot module may need decompressing by Xen. Headroom is an estimate of
- * the additional space required to decompress the module.
- *
- * Headroom is accounted for at the start of the module. Decompressing is
- * done in-place with input=start, output=start-headroom, expecting the
- * pointers to become equal (give or take some rounding) when decompression
- * is complete.
- *
- * Memory layout at boot:
- *
- * start ----+
- * v
- * |<-----headroom------>|<------size------->|
- * +-------------------+
- * | Compressed Module |
- * +---------------------+-------------------+
- * | Decompressed Module |
- * +-----------------------------------------+
- */
- unsigned long headroom;
-
- paddr_t cmdline_pa;
-
- paddr_t start;
- size_t size;
-};
-
/*
* Xen internal representation of information provided by the
* bootloader/environment, or derived from the information.
@@ -94,16 +46,16 @@ struct boot_info {
* Failure - a value greater than MAX_NR_BOOTMODS
*/
static inline unsigned int __init next_boot_module_index(
- const struct boot_info *bi, enum bootmod_type t, unsigned int start)
+ const struct boot_info *bi, boot_module_kind k, unsigned int start)
{
unsigned int i;
- if ( t == BOOTMOD_XEN )
+ if ( k == BOOTMOD_XEN )
return bi->nr_modules;
for ( i = start; i < bi->nr_modules; i++ )
{
- if ( bi->mods[i].type == t )
+ if ( bi->mods[i].kind == k )
return i;
}
diff --git a/xen/arch/x86/pv/dom0_build.c b/xen/arch/x86/pv/dom0_build.c
index e1b78d47c2..a4b5362357 100644
--- a/xen/arch/x86/pv/dom0_build.c
+++ b/xen/arch/x86/pv/dom0_build.c
@@ -422,7 +422,7 @@ static int __init dom0_construct(const struct boot_domain
*bd)
image_base = bootstrap_map_bm(image);
image_len = image->size;
- image_start = image_base + image->headroom;
+ image_start = image_base + image->arch.headroom;
d->max_pages = ~0U;
@@ -659,7 +659,7 @@ static int __init dom0_construct(const struct boot_domain
*bd)
* pages. Tell the boot_module handling that we've freed it, so the
* memory is left alone.
*/
- initrd->released = true;
+ initrd->arch.released = true;
}
iommu_memory_setup(d, "initrd", mfn_to_page(_mfn(initrd_mfn)),
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index f32efa7c60..4f34bbe688 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -303,7 +303,7 @@ struct boot_info __initdata xen_boot_info = {
*
* The extra entry exists to be able to add the Xen image as a module.
*/
- .mods = { [0 ... MAX_NR_BOOTMODS] = { .type = BOOTMOD_UNKNOWN } },
+ .mods = { [0 ... MAX_NR_BOOTMODS] = { .kind = BOOTMOD_UNKNOWN } },
};
static struct boot_info *__init multiboot_fill_boot_info(
@@ -338,7 +338,7 @@ static struct boot_info *__init multiboot_fill_boot_info(
*/
for ( i = 0; i < MAX_NR_BOOTMODS && i < bi->nr_modules; i++ )
{
- bi->mods[i].cmdline_pa = mods[i].string;
+ bi->mods[i].arch.cmdline_pa = mods[i].string;
if ( efi_enabled(EFI_LOADER) )
{
@@ -361,7 +361,7 @@ static struct boot_info *__init multiboot_fill_boot_info(
}
/* Variable 'i' should be one entry past the last module. */
- bi->mods[i].type = BOOTMOD_XEN;
+ bi->mods[i].kind = BOOTMOD_XEN;
return bi;
}
@@ -388,11 +388,11 @@ unsigned long __init initial_images_nrpages(nodeid_t node)
void __init release_boot_module(struct boot_module *bm)
{
- ASSERT(!bm->released);
+ ASSERT(!bm->arch.released);
init_domheap_pages(bm->start, bm->start + PAGE_ALIGN(bm->size));
- bm->released = true;
+ bm->arch.released = true;
}
void __init free_boot_modules(void)
@@ -402,7 +402,7 @@ void __init free_boot_modules(void)
for ( i = 0; i < bi->nr_modules; ++i )
{
- if ( bi->mods[i].released )
+ if ( bi->mods[i].arch.released )
continue;
release_boot_module(&bi->mods[i]);
@@ -997,8 +997,8 @@ static size_t __init domain_cmdline_size(const struct
boot_info *bi,
{
size_t s = 0;
- if ( bd->kernel->cmdline_pa )
- s += strlen(__va(bd->kernel->cmdline_pa));
+ if ( bd->kernel->arch.cmdline_pa )
+ s += strlen(__va(bd->kernel->arch.cmdline_pa));
if ( bi->kextra )
s += strlen(bi->kextra);
@@ -1062,9 +1062,10 @@ static struct domain *__init create_dom0(struct
boot_info *bi)
if ( !(cmdline = xzalloc_array(char, cmdline_size)) )
panic("Error allocating cmdline buffer for %pd\n", d);
- if ( bd->kernel->cmdline_pa )
+ if ( bd->kernel->arch.cmdline_pa )
strlcpy(cmdline,
- cmdline_cook(__va(bd->kernel->cmdline_pa), bi->loader),
+ cmdline_cook(__va(bd->kernel->arch.cmdline_pa),
+ bi->loader),
cmdline_size);
if ( bi->kextra )
@@ -1086,7 +1087,7 @@ static struct domain *__init create_dom0(struct boot_info
*bi)
strlcat(cmdline, " acpi=", cmdline_size);
strlcat(cmdline, acpi_param, cmdline_size);
}
- bd->kernel->cmdline_pa = 0;
+ bd->kernel->arch.cmdline_pa = 0;
bd->cmdline = cmdline;
}
@@ -1299,7 +1300,7 @@ void asmlinkage __init noreturn __start_xen(void)
}
/* Dom0 kernel is always first */
- bi->mods[0].type = BOOTMOD_KERNEL;
+ bi->mods[0].kind = BOOTMOD_KERNEL;
bi->domains[0].kernel = &bi->mods[0];
if ( pvh_boot )
@@ -1483,7 +1484,7 @@ void asmlinkage __init noreturn __start_xen(void)
xen->size = __2M_rwdata_end - _stext;
}
- bi->mods[0].headroom =
+ bi->mods[0].arch.headroom =
bzimage_headroom(bootstrap_map_bm(&bi->mods[0]), bi->mods[0].size);
bootstrap_unmap();
@@ -1565,9 +1566,9 @@ void asmlinkage __init noreturn __start_xen(void)
for ( j = bi->nr_modules - 1; j >= 0; j-- )
{
struct boot_module *bm = &bi->mods[j];
- unsigned long size = PAGE_ALIGN(bm->headroom + bm->size);
+ unsigned long size = PAGE_ALIGN(bm->arch.headroom + bm->size);
- if ( bm->relocated )
+ if ( bm->arch.relocated )
continue;
/* Don't overlap with other modules (or Xen itself). */
@@ -1577,12 +1578,12 @@ void asmlinkage __init noreturn __start_xen(void)
if ( highmem_start && end > highmem_start )
continue;
- if ( s < end && (bm->headroom || (end - size) > bm->start) )
+ if ( s < end && (bm->arch.headroom || (end - size) > bm->start) )
{
- move_memory(end - size + bm->headroom, bm->start, bm->size);
+ move_memory(end - size + bm->arch.headroom, bm->start,
bm->size);
bm->start = (end - size);
- bm->size += bm->headroom;
- bm->relocated = true;
+ bm->size += bm->arch.headroom;
+ bm->arch.relocated = true;
}
}
@@ -1608,7 +1609,7 @@ void asmlinkage __init noreturn __start_xen(void)
#endif
}
- if ( bi->mods[0].headroom && !bi->mods[0].relocated )
+ if ( bi->mods[0].arch.headroom && !bi->mods[0].arch.relocated )
panic("Not enough memory to relocate the dom0 kernel image\n");
for ( i = 0; i < bi->nr_modules; ++i )
{
@@ -2166,7 +2167,7 @@ void asmlinkage __init noreturn __start_xen(void)
initrdidx = first_boot_module_index(bi, BOOTMOD_UNKNOWN);
if ( initrdidx < MAX_NR_BOOTMODS )
{
- bi->mods[initrdidx].type = BOOTMOD_RAMDISK;
+ bi->mods[initrdidx].kind = BOOTMOD_RAMDISK;
bi->domains[0].module = &bi->mods[initrdidx];
if ( first_boot_module_index(bi, BOOTMOD_UNKNOWN) < MAX_NR_BOOTMODS )
printk(XENLOG_WARNING
diff --git a/xen/include/xen/bootfdt.h b/xen/include/xen/bootfdt.h
index 236b456dd2..854e7f1ed9 100644
--- a/xen/include/xen/bootfdt.h
+++ b/xen/include/xen/bootfdt.h
@@ -7,6 +7,10 @@
#include <xen/macros.h>
#include <xen/xmalloc.h>
+#if __has_include(<asm/bootfdt.h>)
+#include <asm/bootfdt.h>
+#endif
+
#define MIN_FDT_ALIGN 8
#define NR_MEM_BANKS 256
@@ -108,6 +112,10 @@ struct boot_module {
bool domU;
paddr_t start;
paddr_t size;
+
+#if __has_include(<asm/bootfdt.h>)
+ struct arch_boot_module arch;
+#endif
};
/* DT_MAX_NAME is the node name max length according the DT spec */
diff --git a/xen/xsm/xsm_policy.c b/xen/xsm/xsm_policy.c
index 1f88b4fc5a..1b4030edb4 100644
--- a/xen/xsm/xsm_policy.c
+++ b/xen/xsm/xsm_policy.c
@@ -53,7 +53,7 @@ int __init xsm_multiboot_policy_init(
printk("Policy len %#lx, start at %p.\n",
_policy_len,_policy_start);
- bm->type = BOOTMOD_XSM_POLICY;
+ bm->kind = BOOTMOD_XSM;
break;
}
--
2.43.0
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