8 files changed, 108 insertions, 40 deletions

diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 5472c2401876..a83061f37e43 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -149,8 +149,7 @@ void __init arm64_memblock_init(void)
                 memblock_reserve(__virt_to_phys(initrd_start), initrd_end - initrd_start);
 #endif
 
-        if (!efi_enabled(EFI_MEMMAP))
-                early_init_fdt_scan_reserved_mem();
+        early_init_fdt_scan_reserved_mem();
 
         /* 4GB maximum for 32-bit only capable devices */
         if (IS_ENABLED(CONFIG_ZONE_DMA))
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index f277184e2ac1..dca9842d8f91 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -1032,7 +1032,6 @@ struct boot_params *make_boot_params(struct efi_config *c)
         int i;
         unsigned long ramdisk_addr;
         unsigned long ramdisk_size;
-        unsigned long initrd_addr_max;
 
         efi_early = c;
         sys_table = (efi_system_table_t *)(unsigned long)efi_early->table;
@@ -1095,15 +1094,20 @@ struct boot_params *make_boot_params(struct efi_config *c)
 
         memset(sdt, 0, sizeof(*sdt));
 
-        if (hdr->xloadflags & XLF_CAN_BE_LOADED_ABOVE_4G)
-                initrd_addr_max = -1UL;
-        else
-                initrd_addr_max = hdr->initrd_addr_max;
-
         status = handle_cmdline_files(sys_table, image,
                                       (char *)(unsigned long)hdr->cmd_line_ptr,
-                                      "initrd=", initrd_addr_max,
+                                      "initrd=", hdr->initrd_addr_max,
                                       &ramdisk_addr, &ramdisk_size);
+
+        if (status != EFI_SUCCESS &&
+            hdr->xloadflags & XLF_CAN_BE_LOADED_ABOVE_4G) {
+                efi_printk(sys_table, "Trying to load files to higher address\n");
+                status = handle_cmdline_files(sys_table, image,
+                                      (char *)(unsigned long)hdr->cmd_line_ptr,
+                                      "initrd=", -1UL,
+                                      &ramdisk_addr, &ramdisk_size);
+        }
+
         if (status != EFI_SUCCESS)
                 goto fail2;
         hdr->ramdisk_image = ramdisk_addr & 0xffffffff;
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
index cbed1407a5cd..d6b8aa4c986c 100644
--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -30,6 +30,33 @@
 #include <asm/boot.h>
 #include <asm/asm-offsets.h>
 
+/*
+ * Adjust our own GOT
+ *
+ * The relocation base must be in %ebx
+ *
+ * It is safe to call this macro more than once, because in some of the
+ * code paths multiple invocations are inevitable, e.g. via the efi*
+ * entry points.
+ *
+ * Relocation is only performed the first time.
+ */
+.macro FIXUP_GOT
+        cmpb    $1, got_fixed(%ebx)
+        je      2f
+
+        leal    _got(%ebx), %edx
+        leal    _egot(%ebx), %ecx
+1:
+        cmpl    %ecx, %edx
+        jae     2f
+        addl    %ebx, (%edx)
+        addl    $4, %edx
+        jmp     1b
+2:
+        movb    $1, got_fixed(%ebx)
+.endm
+
         __HEAD
 ENTRY(startup_32)
 #ifdef CONFIG_EFI_STUB
@@ -56,6 +83,9 @@ ENTRY(efi_pe_entry)
         add     %esi, 88(%eax)
         pushl   %eax
 
+        movl    %esi, %ebx
+        FIXUP_GOT
+
         call    make_boot_params
         cmpl    $0, %eax
         je      fail
@@ -81,6 +111,10 @@ ENTRY(efi32_stub_entry)
         leal    efi32_config(%esi), %eax
         add     %esi, 88(%eax)
         pushl   %eax
+
+        movl    %esi, %ebx
+        FIXUP_GOT
+
 2:
         call    efi_main
         cmpl    $0, %eax
@@ -190,19 +224,7 @@ relocated:
         shrl    $2, %ecx
         rep     stosl
 
-/*
- * Adjust our own GOT
- */
-        leal    _got(%ebx), %edx
-        leal    _egot(%ebx), %ecx
-1:
-        cmpl    %ecx, %edx
-        jae     2f
-        addl    %ebx, (%edx)
-        addl    $4, %edx
-        jmp     1b
-2:
-
+        FIXUP_GOT
 /*
  * Do the decompression, and jump to the new kernel..
  */
@@ -225,8 +247,12 @@ relocated:
         xorl    %ebx, %ebx
         jmp     *%eax
 
-#ifdef CONFIG_EFI_STUB
         .data
+/* Have we relocated the GOT? */
+got_fixed:
+        .byte 0
+
+#ifdef CONFIG_EFI_STUB
 efi32_config:
         .fill 11,8,0
         .long efi_call_phys
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 2884e0c3e8a5..50f69c7eaaf4 100644
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -32,6 +32,33 @@
 #include <asm/processor-flags.h>
 #include <asm/asm-offsets.h>
 
+/*
+ * Adjust our own GOT
+ *
+ * The relocation base must be in %rbx
+ *
+ * It is safe to call this macro more than once, because in some of the
+ * code paths multiple invocations are inevitable, e.g. via the efi*
+ * entry points.
+ *
+ * Relocation is only performed the first time.
+ */
+.macro FIXUP_GOT
+        cmpb    $1, got_fixed(%rip)
+        je      2f
+
+        leaq    _got(%rip), %rdx
+        leaq    _egot(%rip), %rcx
+1:
+        cmpq    %rcx, %rdx
+        jae     2f
+        addq    %rbx, (%rdx)
+        addq    $8, %rdx
+        jmp     1b
+2:
+        movb    $1, got_fixed(%rip)
+.endm
+
         __HEAD
         .code32
 ENTRY(startup_32)
@@ -252,10 +279,13 @@ ENTRY(efi_pe_entry)
         subq    $1b, %rbp
 
         /*
-         * Relocate efi_config->call().
+         * Relocate efi_config->call() and the GOT entries.
          */
         addq    %rbp, efi64_config+88(%rip)
 
+        movq    %rbp, %rbx
+        FIXUP_GOT
+
         movq    %rax, %rdi
         call    make_boot_params
         cmpq    $0,%rax
@@ -271,10 +301,13 @@ handover_entry:
         subq    $1b, %rbp
 
         /*
-         * Relocate efi_config->call().
+         * Relocate efi_config->call() and the GOT entries.
          */
         movq    efi_config(%rip), %rax
         addq    %rbp, 88(%rax)
+
+        movq    %rbp, %rbx
+        FIXUP_GOT
 2:
         movq    efi_config(%rip), %rdi
         call    efi_main
@@ -385,19 +418,8 @@ relocated:
         shrq    $3, %rcx
         rep     stosq
 
-/*
- * Adjust our own GOT
- */
-        leaq    _got(%rip), %rdx
-        leaq    _egot(%rip), %rcx
-1:
-        cmpq    %rcx, %rdx
-        jae     2f
-        addq    %rbx, (%rdx)
-        addq    $8, %rdx
-        jmp     1b
-2:
-        
+        FIXUP_GOT
+
 /*
  * Do the decompression, and jump to the new kernel..
  */
@@ -437,6 +459,10 @@ gdt:
         .quad   0x0000000000000000      /* TS continued */
 gdt_end:
 
+/* Have we relocated the GOT? */
+got_fixed:
+        .byte   0
+
 #ifdef CONFIG_EFI_STUB
 efi_config:
         .quad   0
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index 478c490f3654..1733ab49ac5e 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -239,6 +239,7 @@ static inline int mp_find_ioapic(u32 gsi) { return 0; }
 static inline u32 mp_pin_to_gsi(int ioapic, int pin) { return UINT_MAX; }
 static inline int mp_map_gsi_to_irq(u32 gsi, unsigned int flags) { return gsi; }
 static inline void mp_unmap_irq(int irq) { }
+static inline bool mp_should_keep_irq(struct device *dev) { return 1; }
 
 static inline int save_ioapic_entries(void)
 {
diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index 167ffcac16ed..95a427e57887 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -48,7 +48,9 @@ enum address_markers_idx {
         LOW_KERNEL_NR,
         VMALLOC_START_NR,
         VMEMMAP_START_NR,
+# ifdef CONFIG_X86_ESPFIX64
         ESPFIX_START_NR,
+# endif
         HIGH_KERNEL_NR,
         MODULES_VADDR_NR,
         MODULES_END_NR,
@@ -71,7 +73,9 @@ static struct addr_marker address_markers[] = {
         { PAGE_OFFSET,          "Low Kernel Mapping" },
         { VMALLOC_START,        "vmalloc() Area" },
         { VMEMMAP_START,        "Vmemmap" },
+# ifdef CONFIG_X86_ESPFIX64
         { ESPFIX_BASE_ADDR,     "ESPfix Area", 16 },
+# endif
         { __START_KERNEL_map,   "High Kernel Mapping" },
         { MODULES_VADDR,        "Modules" },
         { MODULES_END,          "End Modules" },
diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c
index 25e7e1372bb2..919b91205cd4 100644
--- a/arch/x86/mm/mmap.c
+++ b/arch/x86/mm/mmap.c
@@ -31,7 +31,7 @@
 #include <linux/sched.h>
 #include <asm/elf.h>
 
-struct __read_mostly va_alignment va_align = {
+struct va_alignment __read_mostly va_align = {
         .flags = -1,
 };
 
diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c
index a56bb3528755..c846a9608cbd 100644
--- a/drivers/firmware/efi/libstub/fdt.c
+++ b/drivers/firmware/efi/libstub/fdt.c
@@ -22,7 +22,7 @@ efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt,
                         unsigned long map_size, unsigned long desc_size,
                         u32 desc_ver)
 {
-        int node, prev;
+        int node, prev, num_rsv;
         int status;
         u32 fdt_val32;
         u64 fdt_val64;
@@ -73,6 +73,14 @@ efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt,
                 prev = node;
         }
 
+        /*
+         * Delete all memory reserve map entries. When booting via UEFI,
+         * kernel will use the UEFI memory map to find reserved regions.
+         */
+        num_rsv = fdt_num_mem_rsv(fdt);
+        while (num_rsv-- > 0)
+                fdt_del_mem_rsv(fdt, num_rsv);
+
         node = fdt_subnode_offset(fdt, 0, "chosen");
         if (node < 0) {
                 node = fdt_add_subnode(fdt, 0, "chosen");