From: Matt Fleming <matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
To: Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
"H . Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
Cc: Ard Biesheuvel
<ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Matt Fleming
<matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
Subject: [PATCH 09/40] efi/arm*: Use memremap() to create the persistent memmap mapping
Date: Mon, 25 Apr 2016 21:06:41 +0100 [thread overview]
Message-ID: <1461614832-17633-10-git-send-email-matt@codeblueprint.co.uk> (raw)
In-Reply-To: <1461614832-17633-1-git-send-email-matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
From: Ard Biesheuvel <ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Instead of using ioremap_cache(), which is slightly inappropriate for
mapping firmware tables, and is not even allowed on ARM for mapping
regions that are covered by a struct page, use memremap(), which was
invented for this purpose, and will also reuse the existing kernel
direct mapping if the requested region is covered by it.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Signed-off-by: Matt Fleming <matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
---
drivers/firmware/efi/arm-runtime.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/firmware/efi/arm-runtime.c b/drivers/firmware/efi/arm-runtime.c
index 55a9ea041068..19283deac375 100644
--- a/drivers/firmware/efi/arm-runtime.c
+++ b/drivers/firmware/efi/arm-runtime.c
@@ -105,8 +105,7 @@ static int __init arm_enable_runtime_services(void)
mapsize = efi.memmap.map_end - efi.memmap.map;
- efi.memmap.map = (__force void *)ioremap_cache(efi.memmap.phys_map,
- mapsize);
+ efi.memmap.map = memremap(efi.memmap.phys_map, mapsize, MEMREMAP_WB);
if (!efi.memmap.map) {
pr_err("Failed to remap EFI memory map\n");
return -ENOMEM;
--
2.7.3
next prev parent reply other threads:[~2016-04-25 20:06 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-25 20:06 [GIT PULL 00/40] EFI changes for v4.7 Matt Fleming
2016-04-25 20:06 ` [PATCH 03/40] x86/mm/pat: Document the (currently) EFI-only code path Matt Fleming
2016-04-25 20:06 ` [PATCH 04/40] efi/arm64: Report unexpected errors when determining Secure Boot status Matt Fleming
2016-04-25 20:06 ` [PATCH 05/40] efi/arm64: Check SetupMode " Matt Fleming
2016-04-25 20:06 ` [PATCH 06/40] efi: Iterate over efi.memmap in for_each_efi_memory_desc Matt Fleming
2016-04-25 20:06 ` [PATCH 07/40] efi: Remove global 'memmap' Matt Fleming
2016-04-25 20:06 ` [PATCH 08/40] efi: Check EFI_MEMORY_DESCRIPTOR version explicitly Matt Fleming
2016-04-25 20:06 ` [PATCH 11/40] arm64: efi: Apply strict permissons for UEFI Runtime Services regions Matt Fleming
2016-04-25 20:06 ` [PATCH 12/40] efi: Add support for the EFI_MEMORY_ATTRIBUTES_TABLE config table Matt Fleming
2016-04-25 20:06 ` [PATCH 13/40] efi: Implement generic support for the Memory Attributes table Matt Fleming
2016-04-25 20:06 ` [PATCH 16/40] x86/efi: Prepare GOP handling code for reuse as generic code Matt Fleming
2016-04-25 20:06 ` [PATCH 17/40] efi/libstub: Move Graphics Output Protocol handling to " Matt Fleming
2016-04-25 20:06 ` [PATCH 18/40] x86/efi: efifb: Move DMI based quirks handling out of " Matt Fleming
2016-04-25 20:06 ` [PATCH 19/40] efifb: Use builtin_platform_driver and drop unused includes Matt Fleming
2016-04-25 20:06 ` [PATCH 20/40] arm64/efi: libstub: Make screen_info accessible to the UEFI stub Matt Fleming
2016-04-25 20:06 ` [PATCH 22/40] efi/arm*: libstub: Wire up GOP protocol to struct screen_info Matt Fleming
2016-04-25 20:06 ` [PATCH 23/40] efi/arm*: Wire up struct screen_info to efi-framebuffer platform device Matt Fleming
2016-04-25 20:06 ` [PATCH 24/40] efifb: Enable the efi-framebuffer platform driver for ARM and arm64 Matt Fleming
[not found] ` <1461614832-17633-1-git-send-email-matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
2016-04-25 20:06 ` [PATCH 01/40] efi: Get rid of EFI_SYSTEM_TABLES status bit Matt Fleming
2016-04-25 20:06 ` [PATCH 02/40] efi/arm*: Drop writable mapping of the UEFI System table Matt Fleming
2016-04-25 20:06 ` Matt Fleming [this message]
2016-04-25 20:06 ` [PATCH 10/40] ARM: efi: Apply strict permissons for UEFI Runtime Services regions Matt Fleming
2016-04-25 20:06 ` [PATCH 14/40] efi/arm*: Take the Memory Attributes table into account Matt Fleming
2016-04-25 20:06 ` [PATCH 15/40] x86/efi: Remove the always true EFI_DEBUG symbol Matt Fleming
2016-04-25 20:06 ` [PATCH 21/40] efi/arm: libstub: Make screen_info accessible to the UEFI stub Matt Fleming
2016-04-25 20:06 ` [PATCH 25/40] efibc: EFI Bootloader Control Matt Fleming
2016-04-25 20:07 ` [PATCH 31/40] efi/runtime-wrappers: Add {__,}efi_call_virt templates Matt Fleming
2016-04-25 20:07 ` [PATCH 32/40] arm64/efi: Move to generic {__,}efi_call_virt Matt Fleming
2016-04-25 20:07 ` [PATCH 34/40] x86/efi: " Matt Fleming
2016-04-25 20:07 ` [PATCH 35/40] efi/runtime-wrappers: Remove redundant ifdefs Matt Fleming
2016-04-25 20:06 ` [PATCH 26/40] efi: Move efi_status_to_err() to drivers/firmware/efi/ Matt Fleming
2016-04-25 20:06 ` [PATCH 27/40] efi: Capsule update support Matt Fleming
2016-04-25 20:07 ` [PATCH 28/40] x86/efi: Force EFI reboot to process pending capsules Matt Fleming
2016-04-25 20:07 ` [PATCH 29/40] efi: A misc char interface to update EFI firmware Matt Fleming
2016-04-25 20:07 ` [PATCH 30/40] efi/arm-init: Reserve rather than unmap the memory map for ARM as well Matt Fleming
2016-04-25 20:07 ` [PATCH 33/40] arm/efi: Move to generic {__,}efi_call_virt Matt Fleming
2016-04-25 20:07 ` [PATCH 36/40] efi/runtime-wrappers: Detect firmware irq flag corruption Matt Fleming
2016-04-25 20:07 ` [PATCH 37/40] arm64/efi: Enable runtime call flag checking Matt Fleming
2016-04-25 20:07 ` [PATCH 38/40] arm/efi: " Matt Fleming
2016-04-25 20:07 ` [PATCH 39/40] x86/efi: " Matt Fleming
2016-04-25 20:07 ` [PATCH 40/40] efi/runtime-wrappers: Remove ARCH_EFI_IRQ_FLAGS_MASK ifdef Matt Fleming
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