[GRUB PATCH RFC 05/18] i386/memory: Rename PAGE_SIZE to GRUB_PAGE_SIZE and make it global

From: Daniel Kiper
Date: Mon May 04 2020 - 19:22:48 EST

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Subsequent patches will use that constant.

Signed-off-by: Daniel Kiper <daniel.kiper@xxxxxxxxxx>
---
grub-core/loader/i386/xen.c | 35 +++++++++++++++++------------------
include/grub/i386/memory.h | 1 +
2 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/grub-core/loader/i386/xen.c b/grub-core/loader/i386/xen.c
index fe92874e0..dfdddfeed 100644
--- a/grub-core/loader/i386/xen.c
+++ b/grub-core/loader/i386/xen.c
@@ -91,8 +91,7 @@ static struct xen_loader_state xen_state;

static grub_dl_t my_mod;

-#define PAGE_SIZE (1UL << GRUB_PAGE_SHIFT)
-#define MAX_MODULES (PAGE_SIZE / sizeof (struct xen_multiboot_mod_list))
+#define MAX_MODULES (GRUB_PAGE_SIZE / sizeof (struct xen_multiboot_mod_list))
#define STACK_SIZE 1048576
#define ADDITIONAL_SIZE (1 << 19)
#define ALIGN_SIZE (1 << 22)
@@ -228,7 +227,7 @@ generate_page_table (grub_xen_mfn_t *mfn_list)

for (m1 = 0; m1 < xen_state.n_mappings; m1++)
grub_memset (xen_state.mappings[m1].where, 0,
- xen_state.mappings[m1].area.n_pt_pages * PAGE_SIZE);
+ xen_state.mappings[m1].area.n_pt_pages * GRUB_PAGE_SIZE);

for (l = NUMBER_OF_LEVELS - 1; l >= 0; l--)
{
@@ -323,7 +322,7 @@ grub_xen_p2m_alloc (void)

map = xen_state.mappings + xen_state.n_mappings;
p2msize = ALIGN_UP (sizeof (grub_xen_mfn_t) *
- grub_xen_start_page_addr->nr_pages, PAGE_SIZE);
+ grub_xen_start_page_addr->nr_pages, GRUB_PAGE_SIZE);
if (xen_state.xen_inf.has_p2m_base)
{
err = get_pgtable_size (xen_state.xen_inf.p2m_base,
@@ -379,9 +378,9 @@ grub_xen_special_alloc (void)
xen_state.state.start_info = xen_state.max_addr + xen_state.xen_inf.virt_base;
xen_state.virt_start_info = get_virtual_current_address (ch);
xen_state.max_addr =
- ALIGN_UP (xen_state.max_addr + sizeof (xen_state.next_start), PAGE_SIZE);
+ ALIGN_UP (xen_state.max_addr + sizeof (xen_state.next_start), GRUB_PAGE_SIZE);
xen_state.console_pfn = xen_state.max_addr >> GRUB_PAGE_SHIFT;
- xen_state.max_addr += 2 * PAGE_SIZE;
+ xen_state.max_addr += 2 * GRUB_PAGE_SIZE;

xen_state.next_start.nr_pages = grub_xen_start_page_addr->nr_pages;
grub_memcpy (xen_state.next_start.magic, grub_xen_start_page_addr->magic,
@@ -430,9 +429,9 @@ grub_xen_pt_alloc (void)
/* Map the relocator page either at virtual 0 or after end of area. */
nr_need_pages = nr_info_pages + map->area.n_pt_pages;
if (xen_state.xen_inf.virt_base)
- err = get_pgtable_size (0, PAGE_SIZE, nr_need_pages);
+ err = get_pgtable_size (0, GRUB_PAGE_SIZE, nr_need_pages);
else
- err = get_pgtable_size (try_virt_end, try_virt_end + PAGE_SIZE,
+ err = get_pgtable_size (try_virt_end, try_virt_end + GRUB_PAGE_SIZE,
nr_need_pages);
if (err)
return err;
@@ -537,7 +536,7 @@ grub_xen_boot (void)

return grub_relocator_xen_boot (xen_state.relocator, xen_state.state, nr_pages,
xen_state.xen_inf.virt_base <
- PAGE_SIZE ? page2offset (nr_pages) : 0,
+ GRUB_PAGE_SIZE ? page2offset (nr_pages) : 0,
xen_state.pgtbl_end - 1,
page2offset (xen_state.pgtbl_end - 1) +
xen_state.xen_inf.virt_base);
@@ -675,7 +674,7 @@ grub_cmd_xen (grub_command_t cmd __attribute__ ((unused)),
goto fail;
}

- if (xen_state.xen_inf.virt_base & (PAGE_SIZE - 1))
+ if (xen_state.xen_inf.virt_base & (GRUB_PAGE_SIZE - 1))
{
grub_error (GRUB_ERR_BAD_OS, "unaligned virt_base");
goto fail;
@@ -698,10 +697,10 @@ grub_cmd_xen (grub_command_t cmd __attribute__ ((unused)),
kern_start = grub_min (kern_start, xen_state.xen_inf.hypercall_page -
xen_state.xen_inf.virt_base);
kern_end = grub_max (kern_end, xen_state.xen_inf.hypercall_page -
- xen_state.xen_inf.virt_base + PAGE_SIZE);
+ xen_state.xen_inf.virt_base + GRUB_PAGE_SIZE);
}

- xen_state.max_addr = ALIGN_UP (kern_end, PAGE_SIZE);
+ xen_state.max_addr = ALIGN_UP (kern_end, GRUB_PAGE_SIZE);

err = grub_relocator_alloc_chunk_addr (xen_state.relocator, &ch, kern_start,
kern_end - kern_start);
@@ -722,7 +721,7 @@ grub_cmd_xen (grub_command_t cmd __attribute__ ((unused)),
if (xen_state.xen_inf.has_hypercall_page)
{
unsigned i;
- for (i = 0; i < PAGE_SIZE / HYPERCALL_INTERFACE_SIZE; i++)
+ for (i = 0; i < GRUB_PAGE_SIZE / HYPERCALL_INTERFACE_SIZE; i++)
set_hypercall_interface ((grub_uint8_t *) kern_chunk_src +
i * HYPERCALL_INTERFACE_SIZE +
xen_state.xen_inf.hypercall_page -
@@ -821,7 +820,7 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
(unsigned) (xen_state.max_addr + xen_state.xen_inf.virt_base),
(unsigned) size);

- xen_state.max_addr = ALIGN_UP (xen_state.max_addr + size, PAGE_SIZE);
+ xen_state.max_addr = ALIGN_UP (xen_state.max_addr + size, GRUB_PAGE_SIZE);

fail:
grub_initrd_close (&initrd_ctx);
@@ -875,7 +874,7 @@ grub_cmd_module (grub_command_t cmd __attribute__ ((unused)),
{
xen_state.xen_inf.unmapped_initrd = 0;
xen_state.n_modules = 0;
- xen_state.max_addr = ALIGN_UP (xen_state.max_addr, PAGE_SIZE);
+ xen_state.max_addr = ALIGN_UP (xen_state.max_addr, GRUB_PAGE_SIZE);
xen_state.modules_target_start = xen_state.max_addr;
xen_state.next_start.mod_start =
xen_state.max_addr + xen_state.xen_inf.virt_base;
@@ -895,7 +894,7 @@ grub_cmd_module (grub_command_t cmd __attribute__ ((unused)),
MAX_MODULES * sizeof (xen_state.module_info_page[0]);
}

- xen_state.max_addr = ALIGN_UP (xen_state.max_addr, PAGE_SIZE);
+ xen_state.max_addr = ALIGN_UP (xen_state.max_addr, GRUB_PAGE_SIZE);

file = grub_file_open (argv[0], GRUB_FILE_TYPE_LINUX_INITRD |
(nounzip ? GRUB_FILE_TYPE_NO_DECOMPRESS : GRUB_FILE_TYPE_NONE));
@@ -918,7 +917,7 @@ grub_cmd_module (grub_command_t cmd __attribute__ ((unused)),

xen_state.module_info_page[xen_state.n_modules].cmdline =
xen_state.max_addr - xen_state.modules_target_start;
- xen_state.max_addr = ALIGN_UP (xen_state.max_addr + cmdline_len, PAGE_SIZE);
+ xen_state.max_addr = ALIGN_UP (xen_state.max_addr + cmdline_len, GRUB_PAGE_SIZE);

if (size)
{
@@ -945,7 +944,7 @@ grub_cmd_module (grub_command_t cmd __attribute__ ((unused)),
xen_state.n_modules++;
grub_dprintf ("xen", "module, addr=0x%x, size=0x%x\n",
(unsigned) xen_state.max_addr, (unsigned) size);
- xen_state.max_addr = ALIGN_UP (xen_state.max_addr + size, PAGE_SIZE);
+ xen_state.max_addr = ALIGN_UP (xen_state.max_addr + size, GRUB_PAGE_SIZE);

fail:
diff --git a/include/grub/i386/memory.h b/include/grub/i386/memory.h
index 7be57d6d7..c64529630 100644
--- a/include/grub/i386/memory.h
+++ b/include/grub/i386/memory.h
@@ -21,6 +21,7 @@
#define GRUB_MEMORY_CPU_HEADER 1

#define GRUB_PAGE_SHIFT 12
+#define GRUB_PAGE_SIZE (1UL << GRUB_PAGE_SHIFT)

/* The flag for protected mode. */
#define GRUB_MEMORY_CPU_CR0_PE_ON 0x1
--
2.11.0

Next message: Daniel Kiper: "[GRUB PATCH RFC 01/18] i386/msr: Merge rdmsr.h and wrmsr.h into msr.h"
Previous message: Daniel Kiper: "[GRUB PATCH RFC 03/18] i386/msr: Extract and improve MSR support detection code"
In reply to: Daniel Kiper: "[GRUB PATCH RFC 03/18] i386/msr: Extract and improve MSR support detection code"
Next in thread: Daniel Kiper: "[GRUB PATCH RFC 01/18] i386/msr: Merge rdmsr.h and wrmsr.h into msr.h"
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