xiaomi-sm8450/android_kernel_xiaomi_sm8450
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lguest: add iomem region, where guest page faults get sent to userspace.

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This lets us implement PCI.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2015-02-11 15:15:10 +10:30
parent d1c29465b8
commit 7313d5217e
5 changed files with 58 additions and 7 deletions
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3
drivers/lguest/lguest_user.c
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@@ -385,7 +385,7 @@ static int initialize(struct file *file, const unsigned long __user *input)
/* "struct lguest" contains all we (the Host) know about a Guest. */
struct lguest *lg;
int err;
unsigned long args[3];
unsigned long args[4];
/*
* We grab the Big Lguest lock, which protects against multiple
@@ -419,6 +419,7 @@ static int initialize(struct file *file, const unsigned long __user *input)
/* Populate the easy fields of our "struct lguest" */
lg->mem_base = (void __user *)args[0];
lg->pfn_limit = args[1];
lg->device_limit = args[3];
/* This is the first cpu (cpu 0) and it will start booting at args[2] */
err = lg_cpu_start(&lg->cpus[0], 0, args[2]);