From: Matt Fleming <matt@codeblueprint.co.uk>
To: Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
"H . Peter Anvin" <hpa@zytor.com>
Cc: Alex Thorlton <athorlton@sgi.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org,
Matt Fleming <matt@codeblueprint.co.uk>,
Borislav Petkov <bp@alien8.de>, Dave Young <dyoung@redhat.com>,
Dimitri Sivanich <sivanich@sgi.com>,
Ingo Molnar <mingo@redhat.com>, Mike Travis <travis@sgi.com>,
Russ Anderson <rja@sgi.com>
Subject: [PATCH 20/29] x86/efi: Map in physical addresses in efi_map_region_fixed
Date: Fri, 9 Sep 2016 16:18:42 +0100 [thread overview]
Message-ID: <20160909151851.27577-21-matt@codeblueprint.co.uk> (raw)
In-Reply-To: <20160909151851.27577-1-matt@codeblueprint.co.uk>
From: Alex Thorlton <athorlton@sgi.com>
This is a simple change to add in the physical mappings as well as the
virtual mappings in efi_map_region_fixed. The motivation here is to
get access to EFI runtime code that is only available via the 1:1
mappings on a kexec'd kernel.
The added call is essentially the kexec analog of the first __map_region
that Boris put in efi_map_region in commit d2f7cbe7b26a ("x86/efi:
Runtime services virtual mapping").
Signed-off-by: Alex Thorlton <athorlton@sgi.com>
Cc: Russ Anderson <rja@sgi.com>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: Mike Travis <travis@sgi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
---
arch/x86/platform/efi/efi_64.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
index 45434ea345e9..e1ca71259468 100644
--- a/arch/x86/platform/efi/efi_64.c
+++ b/arch/x86/platform/efi/efi_64.c
@@ -339,6 +339,7 @@ void __init efi_map_region(efi_memory_desc_t *md)
*/
void __init efi_map_region_fixed(efi_memory_desc_t *md)
{
+ __map_region(md, md->phys_addr);
__map_region(md, md->virt_addr);
}
--
2.9.3
next prev parent reply other threads:[~2016-09-09 15:21 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-09 15:18 [GIT PULL 00/29] EFI changes for v4.9 Matt Fleming
2016-09-09 15:18 ` [PATCH 01/29] x86/efi: Test for EFI_MEMMAP functionality when iterating EFI memmap Matt Fleming
2016-09-09 15:18 ` [PATCH 02/29] x86/efi: Consolidate region mapping logic Matt Fleming
2016-09-09 15:18 ` [PATCH 03/29] efi: Refactor efi_memmap_init_early() into arch-neutral code Matt Fleming
2016-09-09 15:18 ` [PATCH 04/29] efi: Add efi_memmap_init_late() for permanent EFI memmap Matt Fleming
2016-09-09 15:18 ` [PATCH 05/29] efi/fake_mem: Refactor main two code chunks into functions Matt Fleming
2016-09-09 15:18 ` [PATCH 06/29] efi: Split out EFI memory map functions into new file Matt Fleming
2016-09-09 15:18 ` [PATCH 07/29] efi: Add efi_memmap_install() for installing new EFI memory maps Matt Fleming
2016-09-09 15:18 ` [PATCH 08/29] efi: Allow drivers to reserve boot services forever Matt Fleming
2017-01-04 2:48 ` Dan Williams
2017-01-04 5:28 ` Dave Young
2017-01-04 14:25 ` Peter Jones
2017-01-04 17:45 ` Nicolai Stange
2017-01-04 18:40 ` Dan Williams
2016-09-09 15:18 ` [PATCH 09/29] efi/runtime-map: Use efi.memmap directly instead of a copy Matt Fleming
2016-09-09 15:18 ` [PATCH 10/29] efi/esrt: Use efi_mem_reserve() and avoid a kmalloc() Matt Fleming
2016-09-09 15:18 ` [PATCH 11/29] x86/efi-bgrt: Use efi_mem_reserve() to avoid copying image data Matt Fleming
2016-09-09 15:18 ` [PATCH 12/29] efi/esrt: Use memremap not ioremap to access ESRT table in memory Matt Fleming
2016-09-09 15:18 ` [PATCH 13/29] efi/arm*: esrt: Add missing call to efi_esrt_init() Matt Fleming
2016-09-09 15:18 ` [PATCH 14/29] efi: Use a file local lock for efivars Matt Fleming
2016-09-09 15:18 ` [PATCH 15/29] efi: Don't use spinlocks for efi vars Matt Fleming
2016-09-09 15:18 ` [PATCH 16/29] efi: Replace runtime services spinlock with semaphore Matt Fleming
2016-09-09 15:18 ` [PATCH 17/29] x86/efi: Initialize status to ensure garbage is not returned on small size Matt Fleming
2016-09-09 15:18 ` [PATCH 18/29] firmware-gsmi: Delete an unnecessary check before the function call "dma_pool_destroy" Matt Fleming
2016-09-09 15:18 ` [PATCH 19/29] lib/ucs2_string: Speed up ucs2_utf8size() Matt Fleming
2016-09-09 15:18 ` Matt Fleming [this message]
2016-09-09 15:18 ` [PATCH 21/29] fs/efivarfs: Fix double kfree() in error path Matt Fleming
2016-09-09 15:18 ` [PATCH 22/29] x86/efi: Remove unused find_bits() function Matt Fleming
2016-09-09 15:18 ` [PATCH 23/29] efi/arm64: Add debugfs node to dump UEFI runtime page tables Matt Fleming
2016-09-09 15:18 ` [PATCH 24/29] x86/efi: Defer efi_esrt_init until after memblock_x86_fill Matt Fleming
2016-09-09 15:18 ` [PATCH 25/29] efi: Add efi_test driver for exporting UEFI runtime service interfaces Matt Fleming
2016-09-09 15:18 ` [PATCH 26/29] efi/arm64: Treat regions with WT/WC set but WB cleared as memory Matt Fleming
2016-09-09 15:18 ` [PATCH 27/29] x86/efi: Use kmalloc_array() in efi_call_phys_prolog() Matt Fleming
2016-09-09 15:18 ` [PATCH 28/29] x86/efi: Optimize away setup_gop32/64 if unused Matt Fleming
2016-09-09 15:18 ` [PATCH 29/29] x86/efi: Allow invocation of arbitrary boot services Matt Fleming
2016-09-12 10:58 ` [GIT PULL 00/29] EFI changes for v4.9 Matt Fleming
2016-09-12 11:42 ` Ingo Molnar
2016-09-13 18:32 ` Ingo Molnar
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