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authorJames Morse <james.morse@arm.com>2017-11-06 18:44:25 +0000
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-11-07 12:13:21 +0100
commit520e18a5080d2c444a03280d99c8a35cb667d321 (patch)
tree3f49440e7a49516a3c02e4c8c896c8ef795bfe56 /drivers/acpi
parent4f89fa286f6729312e227e7c2d764e8e7b9d340e (diff)
downloadlinux-520e18a5080d2c444a03280d99c8a35cb667d321.tar.bz2
ACPI / APEI: Remove ghes_ioremap_area
Now that nothing is using the ghes_ioremap_area pages, rip them out. Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by: Borislav Petkov <bp@suse.de> Tested-by: Tyler Baicar <tbaicar@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: All applicable <stable@vger.kernel.org>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/apei/ghes.c39
1 files changed, 2 insertions, 37 deletions
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 572b6c7303ed..f14695e744d0 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -114,19 +114,7 @@ static DEFINE_MUTEX(ghes_list_mutex);
* from BIOS to Linux can be determined only in NMI, IRQ or timer
* handler, but general ioremap can not be used in atomic context, so
* the fixmap is used instead.
- */
-
-/*
- * Two virtual pages are used, one for IRQ/PROCESS context, the other for
- * NMI context (optionally).
- */
-#define GHES_IOREMAP_PAGES 2
-#define GHES_IOREMAP_IRQ_PAGE(base) (base)
-#define GHES_IOREMAP_NMI_PAGE(base) ((base) + PAGE_SIZE)
-
-/* virtual memory area for atomic ioremap */
-static struct vm_struct *ghes_ioremap_area;
-/*
+ *
* These 2 spinlocks are used to prevent the fixmap entries from being used
* simultaneously.
*/
@@ -141,23 +129,6 @@ static atomic_t ghes_estatus_cache_alloced;
static int ghes_panic_timeout __read_mostly = 30;
-static int ghes_ioremap_init(void)
-{
- ghes_ioremap_area = __get_vm_area(PAGE_SIZE * GHES_IOREMAP_PAGES,
- VM_IOREMAP, VMALLOC_START, VMALLOC_END);
- if (!ghes_ioremap_area) {
- pr_err(GHES_PFX "Failed to allocate virtual memory area for atomic ioremap.\n");
- return -ENOMEM;
- }
-
- return 0;
-}
-
-static void ghes_ioremap_exit(void)
-{
- free_vm_area(ghes_ioremap_area);
-}
-
static void __iomem *ghes_ioremap_pfn_nmi(u64 pfn)
{
phys_addr_t paddr;
@@ -1247,13 +1218,9 @@ static int __init ghes_init(void)
ghes_nmi_init_cxt();
- rc = ghes_ioremap_init();
- if (rc)
- goto err;
-
rc = ghes_estatus_pool_init();
if (rc)
- goto err_ioremap_exit;
+ goto err;
rc = ghes_estatus_pool_expand(GHES_ESTATUS_CACHE_AVG_SIZE *
GHES_ESTATUS_CACHE_ALLOCED_MAX);
@@ -1277,8 +1244,6 @@ static int __init ghes_init(void)
return 0;
err_pool_exit:
ghes_estatus_pool_exit();
-err_ioremap_exit:
- ghes_ioremap_exit();
err:
return rc;
}