AcoSail/kernel_optimize_test
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Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull EFI fixes from Ingo Molnar:
 "This tree reverts a GICv3 commit (which was broken) and fixes it in
  another way, by adding a memblock build-time entries quirk for ARM64"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/arm: Revert "Defer persistent reservations until after paging_init()"
  arm64, mm, efi: Account for GICv3 LPI tables in static memblock reserve table
This commit is contained in:
Linus Torvalds 2019-02-17 09:22:01 -08:00
commit 2fee036af0
7 changed files with 20 additions and 20 deletions
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11
arch/arm64/include/asm/memory.h
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@ -332,6 +332,17 @@ static inline void *phys_to_virt(phys_addr_t x)
#define virt_addr_valid(kaddr) \
(_virt_addr_is_linear(kaddr) && _virt_addr_valid(kaddr))
/*
* Given that the GIC architecture permits ITS implementations that can only be
* configured with a LPI table address once, GICv3 systems with many CPUs may
* end up reserving a lot of different regions after a kexec for their LPI
* tables (one per CPU), as we are forced to reuse the same memory after kexec
* (and thus reserve it persistently with EFI beforehand)
*/
#if defined(CONFIG_EFI) && defined(CONFIG_ARM_GIC_V3_ITS)
# define INIT_MEMBLOCK_RESERVED_REGIONS (INIT_MEMBLOCK_REGIONS + NR_CPUS + 1)
#endif
#include <asm-generic/memory_model.h>
#endif

1
arch/arm64/kernel/setup.c
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@ -313,7 +313,6 @@ void __init setup_arch(char **cmdline_p)
arm64_memblock_init();
paging_init();
efi_apply_persistent_mem_reservations();
acpi_table_upgrade();

4
drivers/firmware/efi/efi.c
View File

@ -592,11 +592,7 @@ int __init efi_config_parse_tables(void *config_tables, int count, int sz,
early_memunmap(tbl, sizeof(*tbl));
}
return 0;
}
int __init efi_apply_persistent_mem_reservations(void)
{
if (efi.mem_reserve != EFI_INVALID_TABLE_ADDR) {
unsigned long prsv = efi.mem_reserve;

3
drivers/firmware/efi/libstub/arm-stub.c
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@ -75,9 +75,6 @@ void install_memreserve_table(efi_system_table_t *sys_table_arg)
efi_guid_t memreserve_table_guid = LINUX_EFI_MEMRESERVE_TABLE_GUID;
efi_status_t status;
if (IS_ENABLED(CONFIG_ARM))
return;
status = efi_call_early(allocate_pool, EFI_LOADER_DATA, sizeof(*rsv),
(void **)&rsv);
if (status != EFI_SUCCESS) {

7
include/linux/efi.h
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@ -1198,8 +1198,6 @@ static inline bool efi_enabled(int feature)
extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
extern bool efi_is_table_address(unsigned long phys_addr);
extern int efi_apply_persistent_mem_reservations(void);
#else
static inline bool efi_enabled(int feature)
{
@ -1218,11 +1216,6 @@ static inline bool efi_is_table_address(unsigned long phys_addr)
{
return false;
}
static inline int efi_apply_persistent_mem_reservations(void)
{
return 0;
}
#endif
extern int efi_status_to_err(efi_status_t status);

3
include/linux/memblock.h
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@ -29,9 +29,6 @@ extern unsigned long max_pfn;
*/
extern unsigned long long max_possible_pfn;
#define INIT_MEMBLOCK_REGIONS 128
#define INIT_PHYSMEM_REGIONS 4
/**
* enum memblock_flags - definition of memory region attributes
* @MEMBLOCK_NONE: no special request

11
mm/memblock.c
View File

@ -26,6 +26,13 @@
#include "internal.h"
#define INIT_MEMBLOCK_REGIONS 128
#define INIT_PHYSMEM_REGIONS 4
#ifndef INIT_MEMBLOCK_RESERVED_REGIONS
# define INIT_MEMBLOCK_RESERVED_REGIONS INIT_MEMBLOCK_REGIONS
#endif
/**
* DOC: memblock overview
*
@ -92,7 +99,7 @@ unsigned long max_pfn;
unsigned long long max_possible_pfn;
static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS] __initdata_memblock;
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS] __initdata_memblock;
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_RESERVED_REGIONS] __initdata_memblock;
#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
static struct memblock_region memblock_physmem_init_regions[INIT_PHYSMEM_REGIONS] __initdata_memblock;
#endif
@ -105,7 +112,7 @@ struct memblock memblock __initdata_memblock = {
.reserved.regions = memblock_reserved_init_regions,
.reserved.cnt = 1, /* empty dummy entry */
.reserved.max = INIT_MEMBLOCK_REGIONS,
.reserved.max = INIT_MEMBLOCK_RESERVED_REGIONS,
.reserved.name = "reserved",
#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP